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Quantitative, Systems & Engineering Biology Publications

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Quantitative, Systems & Engineering Biology

Inflammation modifies breathing phenotype in mice with epilepsy

Amol Mohan Bhandare, Adwoa Boaten, Dylan Dunkwu, Jade Hill, Biborka Balazs, Nicholas Dale

Impaired CO₂ responsiveness in epilepsy can result in hypoventilation and hypercapnia and these respiratory disturbances are key contributors to Sudden Unexpected Death in Epilepsy (SUDEP). While mild to moderate inflammation is known to modulate respiratory function, its specific role in regulating respiratory responses in the context of epilepsy remains unclear. We studied the effects of lipopolysaccharide (LPS)-induced inflammation and microglial inhibition via minocycline during the acute and chronic phases of epilepsy on hypercapnic ventilatory responses (HCVR) in the intrahippocampal kainic acid model of temporal lobe epilepsy in male C57BL/6 mice. LPS treatment during acute seizures and minocycline during spontaneous seizures in the chronic phase of epilepsy restored the impaired HCVR in mice. Notably, LPS treatment during acute seizures also reduced the frequency of spontaneous seizures. In contrast, minocycline given during acute seizures and LPS administered during chronic epilepsy further exacerbated HCVR impairment. Immunohistochemical analysis of chemosensitive retrotrapezoid nucleus (RTN) revealed varied effects of different treatments in epileptic mice on microglia density, morphology and their expression of triggering receptor expressed on myeloid cells 2 (TREM2), P2Y12 receptor, and astrocytic adenosine 2A receptor (A2AR). Overall, the inflammation during epileptogenic or acute phase preserves HCVR and reduces spontaneous seizure frequency in chronic epilepsy, whereas in chronic phase it worsens HCVR. Although not yet fully validated, changes in microglial and astrocytic receptor expression could contribute to this HCVR impairment and may represent a mechanistic target for preserving HCVR in epilepsy; a dysfunction that could potentially lead to SUDEP.

Journal of Neuroinflammation, January 2026

Rapid local and systemic jasmonate signalling drives the initiation and establishment of plant systemic immunity

Trupti Gaikwad, Susan Breen, Emily Breeze, Erin Stroud, Rana Hussain, Satish Kulasekaran, Nestoras Kargios, Fay Bennett, Marta de Torres-Zabala, David Horsell, Lorenzo Frigerio, Pradeep Kachroo, Murray Grant

Successful recognition of pathogen effectors by plant disease resistance proteins, or effector-triggered immunity (ETI), contains the invading pathogen through localized hypersensitive cell death. ETI also activates long-range signalling to establish broad-spectrum systemic acquired resistance (SAR). Here we describe a sensitive luciferase (LUC) reporter that captures the spatial–temporal dynamics of SAR signal generation, propagation and establishment in systemic responding leaves following ETI. JASMONATE-INDUCED SYSTEMIC SIGNAL 1 (JISS1) encodes an endoplasmic-reticulum-localized protein of unknown function. JISS1::LUC captured very early ETI-elicited SAR signalling, which surprisingly was not affected by classical SAR mutants but was dependent on calcium and was also wound responsive. Both jasmonate biosynthesis and perception mutants abolished JISS1::LUC signalling and SAR to Pseudomonas syringae. Furthermore, we discovered that ETI initiated jasmonate-dependent systemic surface electrical potentials. These surface potentials were dependent on both glutamate receptors and JISS1, despite neither JISS1 loss-of-function nor glutamate receptor mutants altering SAR to Pseudomonas syringae. We thus demonstrate that jasmonate signalling, usually associated with antagonism of defence against biotrophs, is crucial to the rapid initiation and establishment of SAR systemic defence responses (including the activation of systemic surface potentials) and that JISS1::LUC serves as a reporter to further dissect these pathways.

Nature Plants, January 2026

A modelling assessment of the impact of control measures on highly pathogenic avian influenza transmission in poultry in Great Britain

Christopher N. Davis, Edward M. Hill, Chris P. Jewell, Kristyna Rysava, Robin N. Thompson, Michael J. Tildesley

Since 2020, large-scale outbreaks of highly pathogenic avian influenza (HPAI) H5N1 in Great Britain have resulted in substantial poultry mortality and economic losses. Alongside the costs, the risk of circulation leading to a viral reassortment that causes zoonotic spillover raises additional concerns. However, the precise mechanisms driving transmission between poultry premises and the impact of potential control measures in Great Britain, such as vaccination, are not fully understood. We have developed a spatial transmission model for the spread of HPAI in poultry premises calibrated to infected premises data for the 2022–23 season using Markov chain Monte Carlo. Our results indicate that reducing the susceptibility of the premises surrounding an identified infected premises (for example, through enhanced biosecurity measures and/or vaccination) can substantially reduce the overall number of infected premises. Our findings highlight that enhanced control measures could limit the future impact of HPAI on the poultry industry and reduce the risk of broader health threats.

PLOS Computational Biology, January 2026

From the lens of early-career researchers: bridging science, technology, arts, and humanities to tackle antimicrobial resistance

Nikhil Bhalla, Mojgan Rabiey, Prachi Bendale, Katie Lawther, Janice Spencer, Alberto Longo, Lucky Lucky, Vishal Chaudhary, Paul McCormack, Saikat Jana, Patrick S. M. Dunlop, Linda Oyama

Antimicrobial resistance (AMR) is a silent pandemic that presents a global challenge, urging researchers to develop innovative and transdisciplinary solutions. Our initiative aims to promote collaboration across science, engineering, economics, social sciences, and the arts to address the complex dimensions of AMR. We highlight the unique role of early-career researchers (ECRs) in advancing such cross-cutting approaches and conclude that empowering ECRs through equitable support and recognition is essential to sustaining innovation and mobilising communities against AMR.

Nature Communications, January 2026

Identification of evidence gaps and future research needs in food safety

E. Burton, S.P. Borriello, P.J. Gregory, J. Healing, C. Nicholson, T.H. Oliver, S. Pearson, R. Smith, M. Tildesley, J. Wastling, J. O'Brien

Establishing research priorities to support evidence-based regulatory goals requires cross disciplinary collective expert input. This paper reviews the application of expert elicitation to identify and prioritize research questions in food safety regulation, which approach offers regulators and research funders a rapid, reliable, and cost-effective method for assessing evidence gaps in an expanding scientific landscape. While similar methodologies have been applied in ecology and other fields, this is, to our knowledge, the first use in food safety research. Recommendations are provided to strengthen the process.

A facilitated workshop shortlisted 51 questions, grouped into 12 themes, from a long list of 262 submissions, which spanned broad topics, including understanding the origins of emerging hazards and their health impacts. Environmental and sustainability themes address unintended consequences of decarbonization, food waste reduction, and risks from recycled plastics and food byproducts. Dietary change raises questions on emerging allergens, nutritional adequacy of alternative proteins, low fibre intake, and microbiome-related health impacts. Technology-driven changes, such as new production systems, kitchen devices, and secondary food economies, intersect with these dietary shifts.

Scientific advances provide opportunities to improve understanding of the dietary exposome through better intake data. Exposure to dietary chemicals occurs alongside complex mixtures of other agents, requiring structured approaches to risk assessment. The evolving science of chemical mixtures and rapid innovation in food systems underscore the need for robust, prioritized research compatible with good regulatory practice.

Trends in Food Science & Technology, January 2026

Neuroimmune Regulation by TRPM2 Channels

Xuming Zhang, Mitali Malhotra

Mutual interaction between the nervous and immune systems underpins many pathophysiological processes. Transient Receptor Potential Melastatin 2 (TRPM2) channels are abundantly expressed in both systems, acting as a critical interface of neuroimmune interaction. TRPM2 channels in immune cells participate in innate immunity and immune inflammation by acting as an oxidative stress and metabolic sensor. TRPM2 in neurons functions not only as an oxidative sensor but also a temperature sensor and a pain transducer critical to neuronal death, temperature sensing, thermoregulation, and chronic pain. Cooperation between immune and neuronal TRPM2 influences the outcome of neuroimmune interaction and many diseases such as infection, inflammation, ischemic stroke, pain, and neurodegenerative diseases. Improved understanding of neuronal and immune TRPM2 interaction is essential for therapeutic interventions for the treatment of diseases mediated by TRPM2 channels.

Cells, 2026

A holistic view on disease-modifying aspects, comorbidities, and contemporary neuroprotective approaches

Piotr Walczak, Shen Li, Xunming Ji, Johannes Boltze

Most conditions of the central nervous system (CNS) and the peripheral nervous system are not stand-alone disorders but are modulated and influenced by other pathobiological processes. For instance, the impact of frequent comorbidities such as hypertension or dyslipidemia as factors contributing to and aggravating CNS diseases has been much better understood in recent years. Another prominent disease-modifying factor is the gut microbiome which can exert both protective and detrimental effects on the nervous system in health and disease. An even better understanding of these factors will contribute to the development of individualized treatment approaches, a major research objective in the era of precision medicine. The current issue of Neuroprotection presents articles focusing on disease-modifying factors or novel treatment approaches for a broad spectrum of conditions. This provides a wide perspective but also novel insights into disease mechanisms and targeted treatment approaches. Priority has been given to articles reporting, reviewing or meta-analyzing clinical data as well as articles providing results of translationally relevant preclinical work.

Neuroprotection, December 2025

Bioconversion kinetics and valorisation of oil palm empty fruit bunches for biomethane production and lignin derived compounds

Irnia Nurika, Eka Nur Shabrina, Nurul Azizah, Sri Suhartini, Guy C. Barker, Timothy D.H. Bugg

This study assesses the facultative anaerobe Comamonas testosteroni as a mild, chemical-free pre-treatment for valorising oil palm empty fruit bunches (OPEFB) into biomethane and lignin-derived aromatics. Incubation with 2 % (v/v) C. testosteroni for 7 days at 30 °C, reduced lignin to 15.67 % (33.42 % removal), while retaining high cellulose (53.48–56.19 %) and hemicellulose (up to 16.21 %). Pre-treated OPEFB showed 20 % weight loss (vs 8 % in controls) and a 51 % rise in total soluble phenols, evidencing active lignin depolymerisation. GC–MS of liquor and solids qualitatively confirmed lignin breakdown and identified representative low-molecular-weight products (e.g., phenol, betulin, acetic acid and benzoxazole), supporting co-product potential. In biochemical methane potential tests, the pre-treated residue achieved a specific methane potential of 0.173 m³ CH4 kg⁻¹ VS, an 85 % increase over the abiotic residue and higher than non-treated OPEFB. Kinetic fitting with Transference, Modified Gompertz and Logistic models yielded good agreement (R2 up to 0.92), with Modified Gompertz best capturing cumulative methane production and the shortest lag phases. A simple energy check indicates a favourable margin: the incremental methane (ΔSMP ≈ 0.08 m³ CH₄ kg⁻¹ VS) equates ∼0.8 kWh kg⁻¹ VS, whereas estimated mixing for pre-treatment is ∼0.017–0.034 kWh kg⁻¹ VS. Overall C. testosteroni pre-treatment enables dual valorisation (biomethane plus aromatics) under mesophilic conditions, offering a practical route for integrated OPEFB biorefineries.

Biochemical Enigneering Journal, March 2026

Streptococcus pneumoniae S protein activates PBP1a to regulate peptidoglycan remodelling and cell division

Hugo Millat, Cassandra Falcou, Cassandra Lenoir, Nicholas S. Briggs, Jack Stone, Pierre Simon Garcia, Sylvie Manuse, Caroline Cluzel, André Zapun, Cécile Morlot, David I. Roper, Adrien Ducret, Christophe Grangeasse

Class A penicillin-binding proteins (aPBPs) are involved in the biosynthesis and remodelling of peptidoglycan (PG). The human bacterial pathogen Streptococcus pneumoniae produces three aPBPs, which are regulated to maintain the bacterium’s ovoid shape. Evidence suggests that PBP1a and PBP2a activities are closely coordinated; however, their precise functions remain unclear. Here we characterized the pneumococcal S protein, which contains a LysM-PG-binding domain and a GpsB-interacting domain. Using S protein fusion constructs or mutant bacterial strains, we show that S protein localizes to the division ring and is required to prevent premature cell lysis and minicell formation due to aberrant division site placement. S protein interacts with PBP1a and activates its PG synthesis activity. Co-immunoprecipitation experiments combined with biochemical, genetic, structural prediction and microscopy analyses suggest that S protein is part of a larger multiprotein complex containing aPBPs and PG-modifying enzymes, and coordinated by the scaffolding protein GpsB. Together, these findings suggest that a GpsB-associated complex orchestrates PG biosynthesis and remodelling in S. pneumoniae.

Nature Microbiology, January 2026

Quantifying vector diversion effects in zoonotic systems: A modelling framework for arbovirus transmission between reservoir and dead-end hosts

Emma L. Fairbanks, Matthew Baylis, Janet M. Daly, Michael J. Tildesley

Vector-borne disease transmission involves complex interactions between vectors, reservoir hosts and dead-end hosts. We present a mathematical model for the vectorial capacity that incorporates multiple host types and their interactions, focusing specifically on West Nile virus transmission by Culex pipiens mosquitoes. Our model integrates climate-dependent parameters affecting vector biology with vector control interventions to predict transmission potential under various scenarios. We demonstrate how vector control interventions targeting one host type can significantly impact transmission dynamics across all host populations. By examining the effects of different vector control tool modes of action (repellency, preprandial killing, disarming and postprandial killing), we develop target product profiles that minimise unintended consequences of vector control. Notably, we identify the optimal intervention characteristics needed to prevent repellency on dead-end hosts from inadvertently increasing transmission among reservoir hosts. This research provides valuable insights for public health officials designing targeted vector control strategies and offers a flexible modelling framework that can be adapted to other vector-borne diseases with complex host dynamics.

PLOS Computational Biology, December 2025

Bayesian spatio-temporal modelling for infectious disease outbreak detection

Matthew Adeoye, Xavier Didelot, Simon E.F. Spencer

The Bayesian analysis of infectious disease surveillance data from multiple locations typically involves building and fitting a spatio-temporal model of how the disease spreads in the structured population. Here we present new generally applicable methodology to perform this task. We introduce a parsimonious representation of seasonality and a biologically informed specification of the outbreak component to avoid parameter identifiability issues. We develop a computationally efficient Bayesian inference methodology for the proposed models, including techniques to detect outbreaks by computing marginal posterior probabilities at each spatial location and time point. We show that it is possible to efficiently integrate out the discrete parameters associated with outbreak states, enabling the use of dynamic Hamiltonian Monte Carlo (HMC) as a complementary alternative to a hybrid Markov chain Monte Carlo (MCMC) algorithm. Furthermore, we introduce a robust Bayesian model comparison framework based on importance sampling to approximate model evidence in high-dimensional space. The performance of our methodology is validated through systematic simulation studies, where simulated outbreaks were successfully detected, and our model comparison strategy demonstrates strong reliability. We also apply our new methodology to monthly incidence data on invasive meningococcal disease from 28 European countries. The results highlight outbreaks across multiple countries and months, with model comparison analysis showing that the new specification outperforms previous approaches.

Epidemics, December 2025

CDCA7 facilitates MET1-mediated CG DNA methylation maintenance in centromeric heterochromatin via linker histone H1

Shuya Wang, Tong Li, Matthew Naish, Russell Chuang, Evan K. Lin, Christian Fonkalsrud, Yan He, Suhua Feng, Ian R. Henderson, Steven E. Jacobsen

DNA methylation is a conserved epigenetic modification essential for maintaining genome stability. However, how methyltransferases maintain CG methylation within compact chromatin, including centromeres, remains unclear. In humans, CDCA7 is necessary for the inheritance of DNA methylation at juxta-centromeres. Mutations that impair its ability to bind chromatin result in Immunodeficiency, Centromeric Instability, and Facial Anomalies (ICF) syndrome, characterized by centromeric instability. To investigate whether CDCA7 function is conserved, we identified two Arabidopsis thaliana orthologs, CDCA7α and CDCA7β. The loss of both copies results in CG hypomethylation at pericentromeric regions and centromeric satellite repeat arrays. Machine learning analysis suggested that heterochromatic nucleosomes, with enrichment of H1, H2A.W, and H3K9me2, depend heavily on CDCA7 proteins for CG methylation maintenance of the associated DNA. Loss of H1 restores heterochromatic DNA methylation in cdca7α cdca7β mutants, indicating that CDCA7α and CDCA7β mainly remodel H1-containing nucleosomes for methyltransferases to access DNA. Notably, in h1.1 h1.2 mutants, CG methylation shows a significant increase in centromeres, which reveals a new inhibitory role of H1 in DNA methylation maintenance within satellite repeat arrays. Centromeric DNA hypermethylation is lost in h1.1 h1.2 cdca7α cdca7β quadruple mutants, demonstrating that CDCA7α and CDCA7β can act independently of H1 to enhance MET1 activity at nucleosomes. Overall, these findings establish CDCA7α and CDCA7β as conserved regulators of DNA methylation within heterochromatin and centromeric satellite repeat arrays.

PNAS, December 2025

Pineal gland senescence: an emerging ageing-related pathology?

Emma Short, Ramzi Ajjan, Thomas M Barber, Sunil Bhandari, Paul Chazot, Jennifer L. Garrison, Anushka Goyal, Robert Huckstepp, Noordin Jamal, Venkateswarlu Kanamarlapudi, Alpar Lazar, Thomas Lee, Adriana A. S. Tavares, Jeremy J Tree, Jack Wellington, Stuart RG Calimport, Barry Bentley

An ageing-related pathology has recently been described as one that develops and/or progresses with increasing chronological age, that is associated with, or contributes to, functional decline and that is evidenced by studies in humans. The pineal gland is a photo-neuroendocrine organ whose primary function is to produce and secrete melatonin in response to light-dark cycle environmental cues. The gland may undergo ageing-related structural and morphological changes, including calcification, gliosis, cyst formation, and reduced density of β-adrenergic receptors, which are hypothesised to reduce melatonin secretion. Pineal gland senescence describes the ageing-related decline in neuroendocrine function, with reduced secretion of melatonin, which may contribute to ageing-related sleep disorders and disruption of other circadian-driven physiological functions and may have secondary effects such as contributing to cognitive and mood disorders related to sleep disturbance.

Hormones, December 2025

Reply to Kohl: Moving beyond the 19th-century view of domestication

Kathryn A. Lord, Greger Larson, Robin G. Allaby, Elinor K. Karlsson

We recently provided a new definition for domestication as “the process in which nonhuman populations adapt to an environment created through human activity” (1). It brings domestication fully into an evolutionary framework, obviates the need for assumptions about how domestication occurred, and can be applied equally to plants, animals, and microbes.

In response, Kohl (2) argues that our definition does not recognize domestication as a “special case of evolution.” However, as we describe in our article, extensive literature demonstrates that under modern evolutionary theory, domestication is not a special case of evolution, contrary to views held by many scientists in the 19th and early 20th centuries. Our observation that a population can change its relationship to the anthropogenic niche as a result of environmental shifts is fully consistent with this framework. As R. A. Fisher noted in The Genetical Theory of Natural Selection (3), “fitness may be increased or decreased by changes in the environment.” Because evolution by natural selection proceeds through changes in fitness, alterations in the environment, like genetic change, are integral components of the evolutionary process.

Kohl states that the terms “self-sustaining” and “human-created” are arbitrary. Self-sustaining is a key concept in population biology (4) that is also fundamental to the definition of obligate synanthropes. If a population is not self-sustaining, then it is a sink population that requires immigration to persist and by definition maladapted (5). Populations that are adapted to a human-created niche therefore must be self-sustaining, which makes the concept a critical component for the identification of such populations. Similarly, our definition specifies "an environment created through human activity" as distinct from the human body itself, since organisms adapted to live on or in the human body are not necessarily domestic and the evolutionary processes required to thrive in anthropogenic environments differ from those required to survive on the human body.

PNAS, December 2025

The Staphylococcus aureus LXG-domain toxins EsxX and SAR0287 do not promote virulence in a zebrafish larval infection model

Fatima Ulhuq, Amy K. Tooke, Chriselle Mendonca​, Guillermina Casabona​, Johann Habersetzer​, Yaping Yang​, Margarida C. Gomes, Felicity Alcock​, Serge Mostowy​, Tracy Palmer

The type VIIb secretion system (T7SSb) is a multiprotein secretion system that secretes toxins with antibacterial activity, but which is also required for full virulence in animal models of infection. strains carry one of four T7SSb locus types, named to , each of which encodes a characteristic LXG-family substrate at the T7SS locus. In strains, this LXG-domain protein is EsxX, which has a glycine zipper sequence in its C-terminus and has potent antibacterial, membrane-depolarizing activity. In this work, we recognize conserved features of the and systems, identifying the LXG protein SAR0287 as structurally and functionally similar to EsxX. Using a zebrafish larval hindbrain ventricle infection model, we demonstrate that the T7SSb of and representative strains contributes to bacterial replication and zebrafish mortality. However, there is no significant loss of virulence in the model system if EsxX or SAR0287 is absent. These findings indicate that there is no discernible role for either toxin in this virulence model.

Microbiology, December 2025

Adhesive metagenomics: unlocking information on the assembly of historic herbaria

Annabelle R de Vries , Lochlan Chadwick , Mark Carine , Robin G Allaby

Adhesives have been integral to the production of herbaria for paper making, securing plant material to paper, and, in the case of bound volumes, for bookbinding. The adhesives used may be of plant, animal, or synthetic origin. Here we investigated herbarium specimens from the Natural History Museum London (NHM), collected between 1698 and 1970, to determine whether information on the adhesives used in the preparation of herbarium specimens can be established using ancient DNA analysis of the mounted plant material. Ancient DNA was obtained from leaf tissue of 14 herbarium specimens of Trochetiopsis and sequenced using Illumina MiSeq. Non-Trochetiopsis DNA was identified using metagenome analysis software (MEGAN). Reads identified as animal were further analysed using the metagenomics pipeline Phylogenetic Intersection Analysis (PIA). Two specimens showed distinct animal reads. One specimen from 1698, which had glue residue observable on the leaf material, showed evidence for Pecora and Bovidae, specifically Bos, and with lower read counts also for both Leporidae and Ovis. The bones of cattle, rabbits, and sheep are all likely to have been used in the preparation of glue in this period, and consequently the animal DNA retrieved is probably from the glue used for mounting. The second sample was from 1970 and showed reads of Pecora, Bovidae, and Bos. Latex adhesives were used at the NHM during the 1970s with synthetic adhesives used thereafter. We infer that the animal DNA retrieved is probably from gelatine used for paper sizing. The results of this study demonstrate that the genetic analysis of plant material can also provide insights into the process of making herbaria.

Botanical Journal of the Linnean Society, December 2025

Adenosine receptors in GtoPdb v.2025.4

Bertil B. Fredholm, Lauren May, Christa E. Müller, Joel Linden, Karl-Norbert Klotz, Kenneth A. Jacobson, Adriaan P. IJzerman, Rebecca Hills, Bruno G. Frenguelli, Gary L. Stiles

Adenosine receptors (nomenclature as agreed by the NC-IUPHAR Subcommittee on Adenosine Receptors [114]) are activated by the endogenous ligand adenosine (potentially inosine also at A3 receptors). Crystal and cryo-EM structures for all four adenosine receptors have been solved, occupied by either agonists (sometimes in the presence of an allosteric modulator) or antagonists. Many of these structures were incorporated in a recent review [155]. More recently, structures for the A2B receptor [58, 48] and the A3 receptor [279, 47] were elucidated. The A2A receptor is used as a workhorse in GPCR structure elucidation: almost 100 structures are available in the Protein Data Bank (www.rcsb.org). istradefylline, a selective A2A receptor antagonist, is on the market for the treatment of Parkinson's disease, while caffeine's mechanism of action is largely due to its antagonism of at least three of the four adenosine receptor subtypes. Allosteric modulators, particular PAMs of A1 and A3 receptors, have been explored chemically and structurally.

IUPHAR/BPS Guide to Pharmacology CITE, December 2025

Structural basis and evolutionary pathways of glycerol-1-phosphate transport in marine bacteria

Ning Wang, Linda M. Westermann, Mingyu Li, Chun-Yang Li, Andrew R. J. Murphy, Zengtian Gu, Eleonora Silvano, Claudia A. Blindauer, Ian D. E. A., Yu-Zhong Zhang, David J. Scanlan, Yin Chen

All cells use lipid membranes to maintain cellular integrity and function, though Archaea utilize lipids composed of glycerol-1-phosphate (G1P), while Bacteria and Eukaryotes use glycerol-3-phosphate (G3P). Given that Archaea contribute significantly to global marine biomass, accounting for 0.3 gigatonnes (Gt) of carbon in the oceans, we aimed to uncover how archaeal G1P is recycled by marine microorganisms. Through a multidisciplinary approach combining microbiology, biochemistry, and structural biology, we identified a G1P transporter in marine bacteria, which we named GpxB. Phylogenetic analysis revealed that GpxB belongs to the organic phosphonate transporter (PhnT) family and is widely distributed in the marine microbiome, found in approximately 5 to 10% of microbial cells in surface marine waters. Strikingly, we also identified a second G1P transporter, UgpB, that is known to transport G3P and belongs to the carbohydrate uptake transporter-1 (CUT1) family, in the model bacterium Phaeobacter sp. MED193. To explore the evolutionary pathways that led to the formation of G1P binding sites in both the PhnT and CUT1 families, we determined the structures of GpxB and UgpB bound to G1P and G3P. Using structure-guided mutagenesis and a comparative analysis of the binding pockets within the PhnT and CUT1 families, we traced their evolutionary trajectories, highlighting the distinct strategies through which G1P-binding sites developed in these two protein families.

PNAS, December 2025

Natural variation modifies centromere-proximal meiotic crossover frequency and segregation distortion in Arabidopsis thaliana

Nicola Gorringe , Stephanie Topp , Robin Burns , Sota Yamaguchi , Fernando ARabanal , Joiselle B Fernandes , Detlef Weigel , Tetsuji Kakutani , Matthew Naish , Ian R Henderson

Eukaryotic centromeres mediate chromosome segregation during cell division. Plant centromeres are loaded with CENH3-variant nucleosomes, which direct kinetochore formation and spindle-microtubule interaction. Centromeres are frequently composed of megabase-scale satellite repeat arrays, or retrotransposon nests. In monocentric genomes, such as the model plant Arabidopsis thaliana, pericentromeric heterochromatin surrounds the CENH3-occupied satellite arrays. A zone of suppressed meiotic crossover recombination contains the centromere and extends into the pericentromeres. Here, we explore how natural variation in Arabidopsis influences centromere-proximal crossover frequency and segregation distortion when centromeres are heterozygous. We used fluorescent crossover reporters to quantify the effect of genetic variation on centromere-proximal recombination in 12 F1 hybrids between the reference strain Col-0 and nonreference accessions that captured Eurasian and relict diversity, and in total, we measured 3,037,802 meioses. The majority of the F1 hybrids (49 of 60) had significantly higher or lower centromere-proximal crossover frequency than inbreds. We relate hybrid crossover frequencies to patterns of nucleotide diversity and centromeric structural variation, and in a subset of 7 accessions, to epigenetic patterns of CENH3 enrichment and DNA methylation. Using linear modeling, we observed that chromosome and accession, and their interaction, together explained 85% of variation in crossover frequency, consistent with cis- and trans-acting modifying effects. The fluorescent reporters also allow segregation distortion through meiosis to be quantified between hybrids and inbreds. We observed a minority of hybrids (18 of 60) with distorted segregation through meiosis compared to inbreds, which occurred with or without a simultaneous change to centromere-proximal crossover frequency. Linear modeling revealed that 56% of variation in segregation distortion is explained by chromosome and accession, but with a stronger effect of accession compared to crossover frequency. We discuss how Arabidopsis centromeric structural heterozygosity may modify recombination and cause segregation distortion through meiosis.

Genetics, December 2025

Transcriptomic and enzymological evidence for plastid peptidoglycan synthesis in the gymnosperm Picea abies

Yayoi Sugita, Amanda J. Dowson, Ichiro Kajisa, Katsuaki Takechi, Yilan E, Jingzhi Zhao, Jiaqi Wang, Xiaofei Lin, Laura Diaz-Saez, Adrian J. Lloyd, Christopher G. Dowson, Hiroyoshi Takano

It is understood that a cyanobacterium was the progenitor of plastids and that the biosynthesis of cell wall peptidoglycan was lost during chloroplast evolution. However, accumulated data, especially from the moss Physcomitrium patens, suggest that peptidoglycan remains essential for plastid division in some land plants. A fundamental set of peptidoglycan biosynthesis (Mur) genes has been identified in the genomes of these land plants, while many angiosperms no longer encode some core Mur genes, including a bifunctional penicillin-binding protein (PBP). Ten incomplete Mur genes were previously identified in the genome of the gymnosperm Picea abies but these could be pseudogenes or encode proteins that have been repurposed. For instance, mutant albino maize and Arabidopsis seedlings possess a defective UDP-N-acetylmuramoyl-l-alanyl-d-glutamate--2,6-diaminopimelate ligase (MurE), an intact MurE ligase being essential for peptidoglycan synthesis. In this study, we isolated a full set of cDNAs for peptidoglycan biosynthesis from P. abies. GFP fusion proteins with either P. abies (Pa)MurE or PaPBP were detected in chloroplasts. Cross-species complementation assays with PaMurE in Arabidopsis albino MurE mutants and Physcomitrium MurE chloroplast division mutants showed that the gymnosperm MurE completely rescued both mutant phenotypes. Enzymatic assay of recombinant PaMurE proteins revealed they catalyze the same reaction performed by their bacterial MurE homologs. Moreover, the expression of the PaPbp cDNA partially rescued the giant chloroplast phenotype in the moss Pbp knockout line. These results are consistent with the operation of a functional Mur gene set in the Norway spruce genome.

The plant Journal, December 2025

Update of general guidelines for statistically sound and risk-based surveys of plant pests

European Food Safety Authority (EFSA), Elena Lázaro, Stephen Parnell, Antonio Vicent Civera, Martijn Schenk, Jose Cortiñas Abrahantes, Juan Navas-Cortes, Hans-Hermann Thulke, Francesco Pecori, Joshua Koh, Jan Schans, Marc Aerts, Gabriele Zancanaro, Sybren Vos, Tomasz Kaluski

At the request of the European Commission, EFSA prepared the general guidelines for surveys of plant pests, describing the legal, international and scientific context in which the surveys are designed, the basic principles implemented for surveillance of quarantine pests and introducing the concepts needed for the design of statistically sound and risk-based surveys. Three types of specific surveys are addressed: detection surveys for substantiation of pest freedom, delimiting surveys to determine the boundaries of a potential infested zone, and monitoring surveys for prevalence estimation when measuring the effectiveness of eradication measures or for the confirmation of a low pest prevalence area. For each type of survey, the survey parameters are introduced and their interactions analysed showing the importance of the assumptions that are taken for each one of them:

1) The aims of the survey are defined as achieving a certain level of confidence of detecting a given pest prevalence (design prevalence), this reflects the trade-off between the acceptable level of the risk and availability of resources that determine the strength of the evidence to support the conclusion of the survey;

2) The target population is described by its structure and size, including the risk factors; and

3) The method sensitivity is defined as the combination of the sampling effectiveness and the diagnostic sensitivity for each inspection unit. EFSA's RiPEST and RiBESS+ tools are introduced for calculating the sample size using the survey parameters as input values for a statistically sound and risk-based survey design. The mathematical principles behind the tools are in line with the International Standards for Phytosanitary Measures. The survey design is flexible and can be tailored to each pest and specific situation in the Member States. Once the survey is implemented following this approach, the conclusions allow surveys to be compared across time and space, contributing to the harmonisation of surveillance activities across the EU Member States.

EFSA Supporting Publications, December 2025

Bayesian inference of reproduction number from epidemiological and genetic data using particle MCMC

Alicia Gill, Jere Koskela, Xavier Didelot, Richard G Everitt

Inference of the reproduction number through time is of vital importance during an epidemic outbreak. Typically, epidemiologists tackle this using observed prevalence or incidence data. However, prevalence and incidence data alone are often noisy or partial. Models can also have identifiability issues with determining whether a large amount of a small epidemic or a small amount of a large epidemic has been observed. Sequencing data however are becoming more abundant, so approaches which can incorporate genetic data are an active area of research. We propose using particle MCMC methods to infer the time-varying reproduction number from a combination of prevalence data reported at a set of discrete times and a dated phylogeny reconstructed from sequences. We validate our approach on simulated epidemics with a variety of scenarios. We then apply the method to real datasets of HIV-1 in North Carolina, USA and tuberculosis in Buenos Aires, Argentina. The models and algorithms are implemented in an open source R package called EpiSky which is available at https://github.com/alicia-gill/EpiSkyLink opens in a new window.

Journal of the Royal Statistical Society Series C (Applied Statistics), December 2025

The Emergence of a CRISPR-Cas Revolution in Ecology: Applications, Challenges, and an Ecologist's Overview of the Toolbox

Amadeus Plewnia, Brandon D. Hoenig, Stefan Lötters, Christopher Heine, Jesse Erens, Philipp Böning, Gary D. Bending, Henrik Krehenwinkel, Molly Ann Williams

CRISPR-Cas (Clustered Regularly Interspaced Short Palindromic Repeats—CRISPR-associated nucleases) systems allow researchers to detect, capture, and even alter parts of an organism's genome. However, while the use of CRISPR-Cas has revolutionised many fields in the life sciences, its full potential remains underutilised in ecology and biodiversity research. Here we outline the emerging applications of CRISPR-Cas in ecological contexts, focusing on three main areas: nucleic acid detection, CRISPR-enhanced sequencing, and genome editing. CRISPR-based nucleic acid detection of environmental DNA samples is already reshaping species monitoring, providing highly sensitive and non-invasive tools for both scientists and the public alike, with reduced costs and minimal experience required. Further, CRISPR-enhanced sequencing, including Cas-mediated target enrichment, enables efficient recovery of ecologically relevant loci and supports diverse applications such as amplification-free metagenomics. Finally, while genome editing on wild species remains largely theoretical in ecology, these tools are already being used in controlled settings to study adaptation and resilience in the face of ongoing global stressors. Together, the applications of CRISPR-Cas are paving the way for more affordable, accessible, and impactful applications for species conservation, and promise to improve our ability to tackle the ongoing global biodiversity crisis.

Molecular Ecology Resources, December 2025

LUMINIDEPENDENS orchestrates global transcriptional repression in Arabidopsis

Clara Bergis-Ser, Qingyi Wang, Xiaoning He, Maherun Nisa, Vickie Kaise, Christelle Mazubert, Jeannine Drouin-Wahbi, Rim Brik-Chaouche, Layla Chmaiss, Jelle Van Leene, Geert De Jaeger, Jose Gutierrez-Marcos, Catherine Bergounioux, Clara Bourbousse, David Latrasse, Moussa Benhamed, Cécile Raynaud

Genomic integrity is constantly challenged by transcription/replication conflicts, a major source of replication stress and instability across all life forms. While extensive studies have elucidated mechanisms for resolving transcription/replication conflicts in animals, yeast, and prokaryotes, their counterparts in plants remain largely unexplored. Through a forward genetic screen, we identified LUMINIDEPENDENS (LD), previously known for its role in regulating the flowering repressor FLC, as a key factor in mitigating replication stress in plants. Notably, transcriptomic analyses reveal that LD loss results in the upregulation of over half of the Arabidopsis genes, placing LD as a global transcriptional repressor. Consistent with this role, LD directly binds a substantial portion of the Arabidopsis genome and interacts with the MED18 subunit of the Mediator complex to modulate RNA polymerase II phosphorylation. These findings uncover a fundamental function of LD in fine-tuning transcription at a genome-wide scale, with potentially an additional role in suppressing transcription–replication conflicts by locally dampening transcription and promoting replication fork progression. Our work highlights an intriguing genome-protective strategy in plants, that could shed light on mechanisms involved in transcription–replication conflict management in eukaryotic systems.

PNAS, December 2025

Global emergence of Acinetobacter baumannii International Clone 12 predominantly found in the Middle East

Nabil Karah, Nathan Faille​, Nancy Allard, Frédéric Grenier, Antoine Abou-Fayad, Paul G. Higgins, Leena Al-Hassan, Benjamin A. Evans, Laurent Poirel, Rémy A. Bonnin, Anette M. Hammerum, Frank Hansen, Rayane Rafei, Monzer Hamze, Xavier Didelot, Santiago Castillo-Ramírez, Simon Lévesque, Sébastien Rodrigue, Bernt Eric Uhlin, Louis-Patrick Haraoui

Infections caused by carbapenem-resistant (CRAB) are of great concern, as mortality is high, and treatment options are very limited. Despite having among the highest rates reported worldwide, scarce genomic data are available on CRAB strains from the Middle East. Here, we report the global emergence of a novel International Clone (IC), designated IC12, based on the epidemiological, phenotypic and genome sequencing data (short reads and long reads) of a set of 60 . isolates belonging to multilocus sequence type 158 (Pasteur scheme). IC12, prevailing in the Middle East since 2007, has also been found in Europe, Asia and South America. Alleles OXA-65 and ADC-117, coded by the and -intrinsic genes, respectively, were hallmarks shared by all the isolates. Plasmid pIC12-2 (80,000 bp), which carries a replication initiator (RP-T1) and a type IV conjugative transfer system, played a major role in the antimicrobial resistance profile of 54/60 of the IC12 isolates. This resistance was mediated by three mobile genetic elements, namely Tn, MITE and Tn. All four Peruvian IC12 isolates lacked pIC12-2 and carried a different set of plasmids. Two of the Peruvian isolates carried a chromosomal resistance island of 79,396 bp long (designated IC12-RI) marked by the occurrence of (X3). The global spread of IC12 is worrying and calls for further studies on the virulence features and clinical impact of this clone.

Microbial Genomics, November 2025

Macrolide-resistant Mycoplasma pneumoniae resurgence in Chinese children in 2023: a longitudinal, cross-sectional, genomic epidemiology study

Chao Yan,Shanwei Tong, Yarong Wu, Yujie Chen,Xinyu Jia,Yan Guo,Mengnan Cui,Guangqian Pei, Zuming Zhang, Hao Zhou, BAdmin , Kai Mu,Xue Ren,Bing Du, Hanqing Zhao,Yanling Feng,Jinghua Cui,Yuyan Xia, MBBS , Zhen Wang, Yu Sun,Prof Linqing Zhao, Prof Chuangli Hao, Zhijie Zhu, Shengqiang Luo, Han Zhang, Yongjun Wang , Prof Lili Zhong, DehuiChen , Prof Yong Yin , Longji Hu, Prof Yuehua Ke, Prof Guanhua Xue, Prof Ling Cao, , Prof Xavier Didelot, Prof Jing Yuan, Prof Yujun Cui,

Background: After a prolonged period of low detection rates, Mycoplasma pneumoniae resurged in China, during September to November, 2023, raising global concern. This study aims to gain a better understanding of the genetic mechanisms underlying the 2023 increase in cases and the evolutionary dynamics of the epidemic populations, which has been previously hampered due to limited genomic data of this pathogen.

Methods: We sequenced 685 M pneumoniae isolates, including 248 isolates from 11 Chinese provinces and municipalities in 2023 and 437 isolates from Beijing (2013–22). By analysing these isolates and 436 publicly global sequences, we reconstructed the pathogen’s evolutionary history using time-calibrated phylogenies and effective population size inference. We investigated potential genomic variations contributing to the 2023 resurgence through genome-wide association study and conducted phylogeographic analysis of the 2023 isolates across China.

Findings: Two macrolide-resistant epidemic clusters (T1-2-EC1 and T2-2-EC2) were responsible for the 2023 resurgence in China. Both clusters, having acquired the 23S ribosomal RNA A2063G mutation conferring macrolide resistance, emerged in approximately 1997 and 2014, respectively, and subsequently outcompeted their predecessor populations. This coincided with China’s large-scale adoption of azithromycin for paediatric community-acquired pneumonia around the early 2000s. Aside from macrolide resistance, T1-2-EC1 independently acquired 17 clade-specific mutations and T2-2-EC2 four clade-specific mutations, which could further explain their increased competitiveness. Whole-genome analysis revealed no resurgence-specific mutations in the 2023 isolates. Phylogeographic analysis showed rapid mixing of T1-2-EC1 isolates between different sampled regions within China.

Interpretation: Our study provides evidence that the 2023 resurgence in China is a continuation of the pre-COVID epidemic, rather than emergence of novel variants. The high prevalence of macrolide resistance and rapid intranational spread emphasise the urgent need for enhanced global surveillance of this pathogen.

The Lancet (Microbe), December 2025

Predictors of success for human assisted reproduction

Amelia Longa, Daniel N. Franklin

As global fertility rates decline, improving the success rates of assisted reproductive technologies (ART) becomes ever more important. Many factors impact the success of ART and understanding these is key to enhancing treatment efficacy. We analysed a large UK national dataset from the Human Fertilisation and Embryology Authority to determine which factors predict success of ART. Binary logistic regression identified significant predictors of biochemical pregnancy. Patient age, diagnosed ovulatory disorder, specific ART treatment, PGT-A testing, donor egg, number of embryos transferred, patient ethnicity, and day of embryo transfer were significant predictors of success. These results add detail and evidence to previous studies and the insights can inform clinical practices to enhance ART success rates.

Heliyon, January 2026

Engineered bacteriophages for therapeutic and diagnostic applications

Kandas Traore, Damien Seyer, Agnes Mihajlovski, Antonia P Sagona

Antimicrobial resistance represents one of the most serious threats to both public health and economic sustainability. One of the promising approaches to address this problem is phage therapy – treatment of pathogenic bacterial infections using bacteriophages. Bacteriophages have a narrow host spectrum of activity, minimal side effects and self-replication at the infection site, which positions them as promising candidates to complement or replace conventional antibiotics. Moreover, they can be easily genetically modified to enhance their effectiveness and safety. In this At a Glance article, we highlight the timely relevance of engineered phages as an innovative solution in a rapidly evolving healthcare landscape. First, we introduce bacteriophages' life cycle, ecology and therapeutic history, emphasizing their role in One Health strategies. Then, we describe advanced engineering techniques that can be used to expand bacteriophages' functionalities. Finally, we discuss innovative applications of engineered bacteriophages in biotechnological applications and as a potential countermeasure for antimicrobial resistance, including serving as a shuttle for delivering genes and drugs to the targeted bacterial and eukaryotic cells, targeting intracellular bacteria, contributing to vaccine development, facilitating advancements in tissue engineering and improving bacteriophages' antibacterial properties.

Disease Models and Mechanisms, September 2025

Developmental fates and N2-fixing efficiency of terminally-differentiated versus undifferentiated bacteroids from legume nodules

Carmen Sánchez-Cañizares , Raphael Ledermann , Joseph McKenna, Thomas J Underwood , Marcela Mendoza-Suárez , Rob Green , Karunakaran Ramakrishnan , Alison K East , Isabel Webb , Charlotte Kirchhelle , Beatriz Jorrín , Gerhard Saalbach , Euan K James , Flavia Moreira-Leite , Jason Terpolilli , Philip S Poole

Within legume root nodules, rhizobia differentiate into bacteroids, which reduce N2 into NH3 for secretion to the plant. Bacteroids may be swollen and terminally differentiated or non-swollen and can regenerate outside nodules. It is unclear why these different endosymbiotic lifestyles exist and whether they differ in symbiotic efficiency. Here, we compared N2 fixing bacteroids of the near isogenic strains Rhizobium leguminosarum bv. phaseoli 4292 (Rlp4292) and R. leguminosarum bv. viciae A34 (RlvA34), nodulating Phaseolus vulgaris (common bean) and Pisum sativum (pea), respectively. The larger bean plants fixed more N2, but peas fixed 1.6-3-fold more per unit nodule mass. Values per unit volume were similar between bean and pea because bean nodules are 2.7-fold denser (i.e., mass per unit volume). Bean nodules have higher numbers of smaller (∼1/5 the volume) bacteroids than peas. Bean bacteroids are denser (i.e., 2.5-fold protein per unit volume) although less closely packed than pea bacteroids (i.e. more space between bean bacteroids). Critically, pea bacteroids, fix N2 at higher rates versus bean per unit bacteroid protein, as protein expression is skewed towards N2 fixation and TCA-cycle enzymes. Pea bacteroids infect 1.6 times the percentage of nodule volume of beans (i.e., 14.2% versus 9.1%). Overall, the increased packing density of pea bacteroids, as well as the bias of their proteome to nitrogenase, associated N2 fixation processes, and dicarboxylate metabolism, contributes to their greater symbiotic efficiency, which is likely driven by plant antimicrobial peptides.

Plant Physiology, December 2025

Unlocking plant health survey data: An approach to quantify the sensitivity and specificity of visual inspections

Matt Combes, Nathan Brown, Robin N. Thompson, Alexander Mastin, Peter Crow, Stephen Parnell

Invasive plant pests and pathogens cause substantial environmental and economic damage. Visual inspection remains a central tenet of plant health surveys, but its sensitivity (probability of correctly identifying the presence of a pest) and specificity (probability of correctly identifying the absence of a pest) are not routinely quantified. As knowing sensitivity and specificity of visual inspection is critical for effective contingency planning and outbreak management, we address this deficiency using empirical data and statistical analyses. Twenty-three citizen scientist surveyors assessed up to 175 labelled oak trees for three symptoms of acute oak decline. The same trees were also assessed by an expert who has monitored these individual trees annually for over a decade. The sensitivity and specificity of surveyors was calculated using the expert data as the ‘gold-standard’ (i.e., assuming perfect sensitivity and specificity). The utility of an approach using Bayesian modelling to estimate the sensitivity and specificity of visual inspection in the absence of a rarely available ‘gold-standard’ dataset was then examined with simulated plant health survey datasets. There was large variation in sensitivity and specificity between surveyors and between different symptoms, although the sensitivity of detecting a symptom was positively related to the frequency of the symptom on a tree. By leveraging surveyor observations of two symptoms from a minimum of 80 trees on two sites, with reliable prior knowledge of sites with a higher (~0.6) and lower (~0.3) true disease prevalence we show that sensitivity and specificity can be estimated without ‘gold-standard’ data using Bayesian modelling. We highlight that sensitivity and specificity will depend on the symptoms of a pest or disease, the individual surveyor, and the survey protocol. This has consequences for how surveys are designed to detect and monitor outbreaks, as well as the interpretation of survey data that is used to inform outbreak management.

PLOS - Computational Biology, November 2025

Updated Priorities for Cerebroprotection Trials

Sean Savitz, Edgar Samaniego, David Liebeskind, Johannes Boltze

A STAIR XIII workshop was held to discuss aspects of trials likely to have the greatest impact on detecting meaningful treatment effects of cerebroprotection in acute stroke. Intended goals for hyperacute protection should be focused on preserving penumbral tissue and delaying infarct core growth to augment the impact of reperfusion therapies. Infarct volume is a biologically and clinically meaningful surrogate imaging marker to assess the treatment effects of cerebroprotection. Lastly, clinical outcome measures for cerebroprotection should include domain-specific and patient-centered outcomes to detect clinically meaningful changes across multiple functional domains.

Stroke, November 2025

Perspectives from a Workshop: Intelligent Assessment in the age of Artificial Intelligence

Matt Bawn, Nigel Francis, Liz Alvey, Christopher Hassall, Andre Pires-daSilva, Pedro Barra, Denise Hough, Hannah Campbell, Matt Hardy, Juanvi Canet-Perez

The advent of Generative Artificial Intelligence (GenAI) is already impacting pedagogic strategies and assessment methodologies in higher education, particularly in the biological sciences which have traditionally relied heavily on written assessments. GenAI's rapid and plausible text generation capabilities challenge traditional written assessments and prompt a shift towards more authentic assessment types. This paper explores innovative applications of GenAI in biology education through case studies presented at a recent workshop. These case studies illustrate how GenAI has the potential to enhance academic activities, from developing learning resources to fostering student engagement through active learning strategies. The discussion highlights a shift from product-oriented assessments to process-oriented approaches that prioritize continuous interaction, iteration, and reflection among learners. Despite GenAI's reliance on pre-existing data raising concerns about originality and contextual accuracy, and its limitations in tasks requiring high creativity and deep understanding, it has the potential to enhance educational practices when applied with awareness of its constraints. The paper concludes with a balanced analysis of the transformative impact and inherent challenges of integrating GenAI into biology education, advocating for thoughtful implementation to ensure it augments rather than replaces traditional teaching methods.

Advances in Physiology Education- November 2025

PRC1-mediated H2A.Zub promotes gene expression by preventing H3.1K27me1 incorporation in Arabidopsis

Fernando Baile, Javier Antúnez-Sánchez, Jose Gutierrez-Marcos, Myriam Calonje

Background: PcG complexes are pivotal in orchestrating the transition from embryonic to vegetative development in plants. However, the mechanisms underlying the gene expression reprogramming that takes place during this developmental transition are still not fully understood. Several studies suggest that incorporating PcG modifications into distinct histone variants may play a key role in this process. However, while PRC2-mediated H3K27me3 is essential for gene repression, the timing of PRC2 action on canonical H3.1 or variant H3.3 remains unclear. Furthermore, the exact role of PRC1 in transcriptional regulation is still unresolved, partly owing to limited knowledge of the conditions under which this complex monoubiquitinates canonical H2A or H2A.Z variant.

Results: Here, we demonstrate that H2A.Z undergoes monoubiquitination during the seed-to-seedling transition. H2A.Zub facilitates the recruitment of PRC2 to mediate H3.3 trimethylation, repressing seed-specific genes; however, H2A.Zub also promotes the activation of vegetative-specific genes by preventing H3K27me1 incorporation into H3.1. Notably, the histone demethylase REF6 initiates this process by removing two methyl groups from stably repressed H3.1K27me3-marked genes, enabling the subsequent H2A.Zub incorporation. This result suggests that REF6 activity is a critical early step in PRC1-mediated transcriptional activation.

Conclusions: Our findings reveal the long-sought mechanism by which PRC1 participates in transcriptional activation. We demonstrate that PRC1-mediated H2A.Zub, acting as a “switcher”, plays a pivotal role in reprogramming active and repressed genes during the transition from embryonic to vegetative development. Moreover, our results provide new insights into the intricate relationship between histone modifications and histone variants in reprogramming and maintaining gene expression patterns.

Genome Biology, November 2025

Bee-mediated delivery of bacteriophage for biocontrol of the cherry canker pathogen Pseudomonas syringae pv. syringae

Shannon F. Greer, Sneha Chakravorty, Kieran Cooney-Nutley, Dave Chandler*, Gregory Firth, Rajesh Odedra, Mojgan Rabiey

Bacteriophages, phages or viruses that specifically infect bacteria, have shown promise for the biocontrol of bacterial plant diseases. However, one of the main challenges of using phages in agricultural systems is their precision application, being able to deliver an effective dose to the site of bacterial infection. In this study, a series of artificial and real cherry flower experiments was conducted to test whether commercially managed bumblebees (Bombus terrestris audax) could deliver phage effective against the cherry canker pathogen Pseudomonas syringae pv. syringae (Pss). Freeze-dried phage powder was formulated with powdered-skimmed milk and when tested, was found to retain viability for seven days in artificial bee feed after storage at 4 °C, room temperature or under glasshouse conditions. In both artificial and cherry flower experiments, bees successfully transferred the formulated phage from their hive to up to 88 % of flowers, resulting in significant reduction in Pss populations. Bees were also able to transfer phage between cherry flowers. The application of phages disrupted the cycle of Pss transmission by bees. These results highlight the potential of bee-mediated phage delivery as an effective biocontrol strategy against floral pathogens like Pss.

Biological Control, December 2025

Genomic insights into the ecological versatility of Tetracladium spp.

Anna Lazar, Fabrizio Alberti, George Muscatt, Ryan M. Mushinski, Christopher Quince, Gary D. Bending

Background: Tetracladium spp. represent a group of fungi that inhabit various ecological niches, including soil and aquatic environments, where they are considered to have a saprotrophic lifestyle and within plant roots as endophytes. To date, a lack of sequenced Tetracladium spp. genomes has inhibited our understanding of their metabolic potential and ecological interactions. In this study, we aimed to elucidate the genetic differences between aquatic saprotrophic and endophytic strains of Tetracladium spp. by sequencing and analysing the genomes of T. maxilliforme (isolated from Brassica napus roots) and T. marchalianum (isolated from freshwater), alongside 41 publicly available saprotrophic and endophytic Ascomycetes.

Results: Genomic sequencing revealed that T. maxilliforme possesses a genome size of 35.5 Mbp with 9657 predicted genes, while T. marchalianum has a genome size of 33.2 Mbp with 15,230 predicted genes. Our analyses primarily focused on carbohydrate-active enzymes (CAZymes). Both genomes possessed the full range of enzymatic machinery for cellulose degradation, as well as the complete repertoire of genes necessary to degrade plant cell walls. Notably, the genomes lacked essential enzymes for lignin degradation or modification. Furthermore, we observed a complete repertoire of known fungal chitin-degrading enzymes in both genomes, which might be related to potential interactions with other fungi. Enzyme composition profiles revealed distinct groupings, with T. maxilliforme primarily clustering with endophytic or ecologically versatile species, while T. marchalianum was predominantly associated with saprotrophic species. We also identified secondary metabolite biosynthetic gene clusters in both genomes, including several that showed high homology to those of known bioactive compounds.

Conclusions: In summary, our findings offer valuable insights into the genomic adaptations of Tetracladium spp. to various ecological niches, highlighting their enzymatic capabilities for carbohydrate degradation and potential interactions within fungal communities.

BMC Genomics, November 2025

The Use of Ecoacoustics to Monitor Soil Ecology: A Critical Review With Reference to Earthworms

Jacqueline L. Stroud, Michał K. Kalkowski, Kirsty L. Hassall, Miriam Treadway, Jessica Fannon, Aidan Keith, Siul Ruiz, Keith Attenborough

The use of ecoacoustics to monitor soil ecology was identified as a priority in the 2024 horizon scan of global biological conservation issues. Proponents suggest it will have societal impacts by improving soil health assessments, enhance soil biodiversity monitoring and facilitate the conservation, remediation and management of soil ecosystems. Here we review soil ecoacoustics in terms of its definition, theoretical basis, acoustic indices and statistical inferences. To do this we explain mechanical wave behaviour, mechanoreception by fauna, and tactical signal design with reference to earthworms as ecosystem engineers. Ecoacoustics emerged from research on animal long‐distance communication systems, and its direct application to soils has been identified as a problem area. A new field within ecoacoustics has been created for soils, sonoscape investigations, to capture spatio‐temporal complexity of ecological features (rather than soil ecology). There is a good case for reclassifying soil ecoacoustic ‘soundscape’ studies as sonoscapes. We identify that further refinement of ecoacoustics is required for applications to soil habitats. The performance of sonoscape investigations is dependent on acoustic indices and statistical inferences, and we question why stationary signal processing is used as the base transform for soils data, and highlight the issue of unbalanced data sets, particularly pertinent to soils as there is limited understanding of what exactly is being detected. We list the key research needs and highlight that integrating soil science and mechanistic modelling of soil processes and wave propagation as an essential component of developing reliable monitoring solutions. Embracing these interdisciplinary avenues will help develop sensing capabilities for soils in robust scientific principles and mitigate the risks of speculative overreach.

European Journal of Soil Science, November 2025

Maximizing the Biocontrol Potential of Bacteriophages: A Call for Critically-Needed Field Research

George W Sundin, Sara M Villani, Quan Zeng, Michelle Hulin, Mojgan Rabiey, Kerik Cox

Bacteriophages are viruses capable of infecting bacterial cells. Lytic phages, which infect and kill bacterial cells, are of interest in disease management in human, animal, and plant systems. In plant pathology, the biocontrol of bacterial diseases is of heightened interest because of the lack of efficacious options in many pathosystems. Numerous papers have been published in the past few decades on phage that target plant pathogenic bacteria, and a large majority of these have been focused on phage isolation and characteristics that highlight the promise and potential of phage as biocontrol agents. In contrast, relatively few of these papers have reported results from studies conducted in the field. Of the recent papers (2022 to 2025) reporting field studies, disease efficacy results are inconsistent. We argue that field studies should be an essential component of phage biocontrol research to understand how to best utilize and deploy phages to generate consistently effective disease management.

Plant Disease, November 2025.

Comparative genomic analysis of a metagenome-assembled genome reveals distinctive symbiotic traits in a Mucoromycotina fine root endophyte arbuscular mycorrhizal fungus

Joshua Cole, Sébastien Raguideau, Payman Abbaszadeh-Dahaji, Sally Hilton, George Muscatt, Ryan M. Mushinski, R. Henrik Nilsson, Megan H. Ryan, Christopher Quince, Gary D. Bending

Background: Recent evidence shows that arbuscular mycorrhizal (AM) symbiosis, as defined by the presence of arbuscules, is established by two distinct fungal groups, with the distinctive ‘fine root endophyte’ morphotype formed by fungi from the subphylum Mucoromycotina rather than the sub-phylum Glomeromycotina. While FRE forming fungi are globally distributed, there is currently no understanding of the genomic basis for their symbiosis or how this symbiosis compares to that of other mycorrhizal symbionts.

Results: We used culture-independent metagenome sequencing to assemble and characterise the metagenome-assembled genome (MAG) of a putative arbuscule forming fine root endophyte, which we show belonged to the family Planticonsortiaceae within the order Densosporales. The MAG shares key traits with Glomeromycotina fungi, which indicate obligate biotrophy, including the absence of fatty acid and thiamine biosynthesis pathways, limited enzymatic abilities to degrade plant cell walls, and a high abundance of calcium transporters. In contrast to Glomeromycotina fungi, it exhibits a higher capacity for degradation of microbial cell walls, a complete cellulose degradation pathway, low abundances of copper, nitrate and ammonium transporters, and a complete pathway for vitamin B6 biosynthesis.

Conclusion: These differences, particularly those typically associated with saprotrophic functions, highlight the potential for contrasting interactions between Mucoromycotina and Glomeromycotina fungi with their host plant and the environment. In turn, this could support niche differentiation in resource acquisition and complementary ecological functions.

BMC Genormics, October 2025

The 2025 report of the Lancet Countdown on health and climate change

Marina Romanello, Maria Walawender, Shih-Che Hsu, Annalyse Moskeland, Yasna Palmeiro-Silva, Daniel Scamman, James W Smallcombe, Sabah Abdullah, Melanie Ades, Abdullah Al-Maruf, Nadia Ameli, Denitsa Angelova, Sonja Ayeb-Karlsson, Joan Ballester, Xavier Basagaña, Hannah Bechara, Paul J Beggs, Wenjia Cai, Diarmid Campbell-Lendrum, Gina E C Charnley, Orin Courtenay, Troy J Cross, Carole Dalin, Niheer Dasandi, Shouro Dasgupta, Michael Davies, Matthew Eckelman, Chris Freyberg, Paulina Garcia Corral, Olga Gasparyan, Joseph Giguere, Georgiana Gordon-Strachan, Sophie Gumy, Samuel H Gunther, Ian Hamilton, Yun Hang, Risto Hänninen, Stella Hartinger, Kehan He, Julian Heidecke, Jeremy J Hess, Slava Jankin, Ollie Jay, Dafni Kalatzi Pantera, Ilan Kelman, Harry Kennard, Gregor Kiesewetter, Patrick Kinney, Dominic Kniveton, Vally Koubi, Rostislav Kouznetsov, Pete Lampard, Jason K W Lee, Bruno Lemke, Bo Li, Andrew Linke, Yang Liu, Zhao Liu, Rachel Lowe , Siqi Ma, Tafadzwanashe Mabhaudhi, Carla Maia, Anil Markandya, Greta Martin, Jaime Martinez-Urtaza, Mark Maslin, Lucy McAllister, Celia McMichael, Zhifu Mi, James Milner, Kelton Minor, Jan Minx, Nahid Mohajeri, Natalie C Momen, Maziar Moradi-Lakeh, Karyn Morrisey, Simon Munzert, Kris A Murray, Nick Obradovich, Papa Orgen, Matthias Otto, Fereidoon Owfi, Olivia L Pearman, Frank Pega, Andrew J Pershing, Ana-Catarina Pinho-Gomes, Jamie Ponmattam, Mahnaz Rabbaniha, Tim Repke, Jorge Roa, Elizabeth Robinson, Joacim Rocklöv, David Rojas-Rueda, Jorge Ruiz-Cabrejos, Matilde Rusticucci, Renee N Salas, Adrià San José Plana, Jan C Semenza, Jodi D Sherman, Joy Shumake-Guillemot, Pratik Singh, Henrik Sjödin, Matthew R Smith, Mikhail Sofiev, Cecilia Sorensen, Marco Springmann, Jennifer D Stowell, Meisam Tabatabaei, Federico Tartarini, Jonathon Taylor, Cathryn Tonne, Marina Treskova, Joaquin A Trinanes, Andreas Uppstu, Nicolas Valdes-Ortega, Fabian Wagner, Nick Watts, Hannah Whitcombe, Richard Wood, Pu Yang, Ying Zhang, Shaohui Zhang, Chi Zhang, Shihui Zhang, Qiao Zhu, Peng Gong, Hugh Montgomery, Anthony Costello

Driven by human-caused greenhouse gas emissions, climate change is increasingly claiming lives and harming people's health worldwide. Mean annual temperatures exceeded 1·5°C above those of pre-industrial times for the first time in 2024. Despite ever more urgent calls to tackle climate change, greenhouse gas emissions rose to record levels that same year. Climate change is increasingly destabilising the planetary systems and environmental conditions on which human life depends.

The Lancet, October 2025

iNOME-seq: in vivo simultaneous genome-wide mapping of chromatin accessibility, nucleosome positioning, DNA-binding protein sites, and DNA methylation in Arabidopsis

Nosheen Hussain, Ryan Merrit, Julia Engelhorn, Javier Antunez-Sanchez, Anjar Wibowo, David Latrasse, Travis Wrightsman, Maximillian Collenberg, Ilja Bezrukov, Hidayah Alotaibi, Elsa Carrasco, Moussa Benhamed, Detlef Weigel, Nicolae Radu Zabet, Jose Gutierrez-Marcos

We present iNOMe-seq, a novel method for in vivo simultaneous profiling of chromatin accessibility, nucleosome occupancy, DNA-binding protein sites, and DNA methylation in living tissues. iNOMe-seq utilizes an m5C methyltransferase to mark accessible cytosines in a GpC context, bypassing nucleosome-restricted regions. Using Arabidopsis thaliana, we demonstrate that iNOMe-seq improves chromatin accessibility quantification compared to existing methods. Furthermore, it allows for the spatial and temporal analysis of chromatin dynamics, transcription factor binding, and DNA methylation, offering insight into the role of epigenetic components in transcriptional regulation across tissues and genetic variations in natural populations.

Genome Biology, October 2025

Structural characterization of the YbbAP-TesA ABC transporter identifies it as a lipid hydrolase complex that extracts hydrophobic compounds from the bacterial inner membrane

McAndrew, Martin B. L., Cook, Jonathan P., Gill, Amy, Sahoo, Kavya, Thomas, Clare, Stansfeld, Phillip J. and Crow, Allister

Type VII ABC transporters are ATP-powered membrane protein complexes that drive key biological processes in the bacterial cell envelope. In Escherichia coli, three of the four Type VII ABC systems have been extensively characterized, including: the FtsEX-EnvC cell division complex, the LolCDE-LolA lipoprotein trafficking machinery, and the MacAB-TolC efflux pump. Here we describe a fourth E. coli Type VII ABC system, YbbAP-TesA, which combines a Type VII ABC transporter with a multifunctional hydrolytic enzyme. Structures of the complete YbbAP-TesA complex, and of YbbAP with and without bound ATP analogues, capture implied long-range transmembrane conformational changes that are the hallmark of this ABC superfamily’s mechanotransmission mechanism. We further show that YbbAP-TesA can hydrolyze a variety of ester and thioester substrates and experimentally confirm a constellation of active site residues in TesA. Our data suggests YbbAP has a role in extracting hydrophobic molecules from the inner membrane and presenting these to TesA for hydrolysis. The work extends collective knowledge of the remarkable diversity of the ABC superfamily and establishes a new function for Type VII ABC transporters in bacterial cells.

PLOS Biology, November 2025

Identification of Race-Specific, Clade-Specific and Broad-Spectrum Resistance to Xanthomonas campestris pv. campestris in Brassica Diversity Fixed Foundation Sets

Shannon F. Greer, Jamie Harrison, Daisy Bown, Maria Serrano, Rana Muhammed Fraz Hussain, Srayan Ghosh, Graham R. Teakle, Vardis Ntoukakis, David J. Studholme, Joana G. Vicente, Murray Grant

Black rot, caused by Xanthomonas campestris pv. campestris (Xcc), is the most damaging bacterial disease of vegetable brassicas (Brassica oleracea) worldwide. The prevalence of several genetically diverse Xcc races makes breeding for varietal resistance challenging. In this study, we have screened diversity fixed foundation sets (DFFSs) of B. oleracea and Brassica napus for resistance against isolates belonging to prevalent Xcc races 1, 4, 5 and 6. The DFFSs are designed to capture the genetic diversity available within the respective Brassica species gene-pools in smaller subsets of lines. Our findings revealed that resistances to race 1 and 4 were largely absent in B. oleracea but more prevalent in B. napus. Notably, resistance to race 4 was particularly common in B. napus (63% of lines showed resistance, 13% of lines showed partial resistance). Conversely, resistance to races 5 and 6 was more common in B. oleracea than in B. napus. In B. oleracea, there was no significant association between disease index and morphotype but, among the B. napus morphotypes, swede was the most susceptible to races 1, 5 and 6 but not to race 4. Ten B. oleracea and 67 B. napus lines showed resistance to more than one isolate. Further testing of a subset of these lines demonstrated that resistances were effective against additional diverse Xcc isolates in a race-specific, clade-specific or broad-spectrum manner. The resistant lines identified in this study offer a valuable resource for breeding programmes aimed to achieve durable and sustainable control of Xcc.

Plant Pathology, October 2025

Enset Bacterial Wilt (Xanthomonas vasicola pv. musacearum): Farmer Perspectives, Physicochemical Characterization, and Phenotypic Variation Among Strains

Tafesse Kibatu, Sebsebe Demissew, Diriba Muleta, Getahun Haile, Seman Abrar, Denberu Kebede, Murray Grant, Sadik Muzemil, Tileye Feyissa

Enset is a staple food for approximately 25% of Ethiopia’s population. It is threatened by a range of biotic and abiotic stress, of which bacterial wilt is the most significant. This study investigated the enset bacterial wilt (EBW) status on farms in Gedeo, Kembata Tembaro, Gurage, Hadiya zones, and the Basketo special woreda of Southern Ethiopia. In addition, infected enset plant samples were collected from Hadiya, Kembata Tembaro, and Gedeo zones to assess bacterial strain diversity using physicochemical and morphological approaches. Representative Kebeles were selected using purposive sampling based on their agroecological conditions. Data was collected through in-depth interviews, questionnaires, group discussions, and field observation. The morphology of bacterial wilt isolates was characterized by color, texture, form, elevation, margin, and motility. In addition, a combination of oxidase, aesculin hydrolysis, catalase, gram reaction, hydrogen sulfide (H2S), gelatin liquefaction, and fructose, lactose, mannitol, and sorbitol utilization tests were conducted to capture physiochemical differences. Tolerance to salt and high temperatures was also evaluated. The bacterial wilt impact varies significantly across enset growing regions, with highlands experiencing the highest. This research emphasizes the importance of assessing both spatial and temporal variation, as well as integrating local knowledge and robust scientific approaches for effective bacterial wilt management and enset landrace conservation efforts. The research also provides valuable insights into the characteristics of bacterial wilt isolates in Southern Ethiopia. Analyses of morphology, potassium hydroxide solubility, catalase activity, and carbohydrate utilization were consistent, however, variations in bacterial isolates response to tests of easculin, oxidase, gelatin liquid, H2S tests and response to osmotic and temperature exposures. This study reveals a strong association between the bacterial wilt effect and the enset growing regions. EBW exhibits seasonal fluctuations. Bacterial wilt isolates displayed consistent morphological characteristics. All isolates similarly utilized sorbitol, mannitol, lactose, and fructose carbohydrates. All isolates exhibited positive potassium hydroxide solubility and catalase activity. However, the isolates displayed variations in responses to easculin, oxidase, gelatin liquefaction, and H2S production. The isolates also displayed variations in tolerance to salt and high temperatures. These variations can be valuable for understanding disease epidemiology and management.

Advances in Agriculture, January 2025

Between‐country differences in the psychosocial profiles of British cattle farmers

Naomi S. Prosser, Eamonn Ferguson, Jasmeet Kaler, Edward M. Hill, Michael J. Tildesley, Matt J. Keeling, Martin J. Green

BACKGROUND: Psychosocial factors are important for the uptake of livestock disease control measures by farmers and can differ by region, which would have implications for disease control nationally.

METHODS: We investigated altruism, trust, psychological proximity and the COM-B behaviour change framework in a survey of 475 British cattle farmers in 2020. Using regression models, we studied associations between the country farmers lived in and psychosocial and behaviour change factors. RESULTS: There were many between-country differences in farmers' psychosocial and COM-B profiles. Accounting for multiple tests, Scottish cattle farmers reported higher trust in governmental judgements for disease control and greater social opportunity to control disease than English cattle farmers.

LIMITATIONS: There were relatively low numbers of respondents from Scotland and Wales. As such, the results should be interpreted with caution. Northern Irish farmers could not be included in the analyses as there were too few responses.

CONCLUSION: Cattle farmers differed in their psychosocial profiles by country. Our sample of Scottish farmers reported higher trust in, and felt better supported by, government in the context of disease control than the English farmers, which could be due to different disease control approaches between devolved governments. Understanding between-country differences in farmer psychosocial attributes has implications for animal health governance and approaches to disease control.

Veterinary Record, October 2025

Mechanisms of permselectivity of connexin hemichannels to small molecules

Alexandra Lovatt, Jack Butler, Nicholas Dale

Connexins can act either as hemichannels to facilitate ion and small-molecule movement from the cytosol to the extracellular space or as gap junction channels to provide a pathway for solute exchange between cells. Connexins are ubiquitously expressed throughout the body and are implicated in a wide range of processes. The permselectivity of connexin hemichannels for small neurochemicals remains poorly understood. By coexpressing genetically encoded fluorescent sensors for ATP, glutamate, and lactate with a range of connexins, we examined the ability of different hemichannels to permit the release of these compounds under physiological conditions and in response to physiological stimuli (small changes in partial pressure of CO2 and transmembrane depolarization). We found that some connexin hemichannels were relatively nonselective (Cx26, Cx32, Cx43, and Cx31.1) allowing passage of ATP, glutamate, and lactate. By contrast, other connexin hemichannels (Cx36, Cx46, and Cx50) were highly selective. Cx36 and Cx46 hemichannels allowed the release of ATP but not glutamate or lactate. The size of the permeating molecule cannot be the sole determinant of permselectivity. By contrast, Cx50 hemichannels permitted the release of lactate and glutamate but not ATP. We also found that the nature of the opening stimulus could alter the permselectivity of the hemichannel—for some of the relatively nonselective connexins, hemichannel opening via depolarization was ineffective at allowing the release of lactate. By performing a mutational analysis, informed by the differential selectivity of the closely related Cx46 and Cx50 hemichannels, we found that the charge on the N terminus and N terminus–transmembrane 2 interactions are key contributors to permselectivity for ATP.

Journal of Biological Chemistry, December 2025

Discovery of Late Intermediates in Methylenomycin Biosynthesis Active against Drug-Resistant Gram-Positive Bacterial Pathogens

Christophe Corre, Gideon A. Idowu, Lijiang Song, Melanie E. Whitehead, Lona M. Alkhalaf, Gregory L. Challis

The methylenomycins are highly functionalized cyclopentanone antibiotics produced by Streptomyces coelicolor A3(2). A biosynthetic pathway to the methylenomycins has been proposed based on sequence analysis of the proteins encoded by the methylenomycin biosynthetic gene cluster and the incorporation of labeled precursors. However, the roles played by putative biosynthetic enzymes remain experimentally uninvestigated. Here, the biosynthetic functions of enzymes encoded by mmyD, mmyO, mmyF, and mmyE were investigated by creating in-frame deletions in each gene and investigating the effect on methylenomycin production. No methylenomycin-related metabolites were produced by the mmyD mutant, consistent with the proposed role of MmyD in an early biosynthetic step. The production of methylenomycin A, but not methylenomycin C, was abolished in the mmyF and mmyO mutants, consistent with the corresponding enzymes catalyzing the epoxidation of methylenomycin C, as previously proposed. Expression of mmyF and mmyO in a S. coelicolor M145 derivative engineered to express mmr, which confers methylenomycin resistance, enabled the resulting strain to convert methylenomycin C to methylenomycin A, confirming this hypothesis. A novel metabolite (premethylenomycin C), which readily cyclizes to form the corresponding butanolide (premethylenomycin C lactone), accumulated in the mmyE mutant, indicating the corresponding enzyme is involved in introducing the exomethylene group into methylenomycin C. Remarkably, both premethylenomycin C and its lactone precursor were one to two orders of magnitude more active against various Gram-positive bacteria, including antibiotic-resistant Staphylococcus aureus and Enterococcus faecium isolates, than methylenomycins A and C, providing a promising starting point for the development of novel antibiotics to combat antimicrobial resistance.

Journal of the American Chemical Society, October 2025

Protein Target Highlights in CASP16: Insights From the Structure Providers

Leila T. Alexander, Océane M. Follonier, Andriy Kryshtafovych,| Kim Abesamis, Sabrina Bibi-Triki, Henry G. Box, Cécile Breyton, Françoise Bringel, Loic Carrique, Alessio d'Acapito, Gang Dong, Rebecca DuBois, Deborah Fass, JulianaMartinez Fiesco, Daniel R. Fox, Jonathan M. Grimes, Rhys Grinter, Matthew Jenkins, Roman Kamyshinsky, Jeremy R. Keown, Gerald Lackner, Michael Lammers, Shiheng Liu, Andrew L. Lovering,Tomas Malinauskas, Benoît Masquida, Gottfried J. Palm, Christian Siebold,Tiantian Su, Ping Zhang, Z. Hong Zhou, Krzysztof Fidelis, Maya Topf, John Moult, Torsten Schwed

This article presents an in-depth analysis of selected CASP16 targets, with a focus on their biological and functional significance. The authors highlight the most relevant features of the target proteins and discuss how well these were reproduced in the submitted predictions. While the overall performance of structure prediction methods remains impressive, challenges persist, particularly in modeling rare structural motifs, flexible regions, small molecule interactions, posttranslational modifications, and biologically important interfaces. Addressing these limitations can strengthen the role of structure prediction in complementing experimental efforts and advancing both basic research and biomedical applications.

Proteins (Structure, Function, Bioinformatics), October 2025

StayRose: A photostable StayGold derivative redshifted by genetic code expansion

Will Scott, Esther Ivorra-Molla, Dipayan Akhuli, Teresa Massam-Wu, Pawel K. Lysyganicz, Rylie Walsh, Matthew Parent, Jonathan Cook, Lijiang Song, Abhishek Kumar, Falk Schneider, Masanori Mishima, Allister Crow, Mohan K. Balasubramanian

Photobleaching of fluorescent proteins often limits the acquisition of high-quality images in microscopy. StayGold, a novel dimeric GFP recently monomerized through sequence engineering, addresses this challenge with its high photostability. There is now a focus on producing different colored StayGold derivatives to facilitate concurrent tagging of multiple targets. The unnatural amino acid 3-aminotyrosine has previously been shown to redshift superfolder GFP upon incorporation into its chromophore via genetic code expansion. Here, we apply the same strategy to redshift StayGold through substitution of tyrosine-58 with 3-aminotyrosine. The resultant red fluorescent protein, StayRose, shows an excitation wavelength maximum of 530 nm and an emission wavelength maximum of 588 nm. Importantly, the monomeric mStayRose retains the favorable photostability in vivo in Escherichia coli and zebrafish embryos. A high-resolution crystal structure of StayRose confirms the modified structure of the amino chromophore within an unperturbed 3D fold. Although reliant on genetic code expansion, StayRose provides an important step toward developing redshifted StayGold derivatives.

Journal of Biological Chemistry, December 2025

Better understanding complex pathomechanisms in central nervous system disorders as a prerequisite for improved diagnostic and therapeutic approaches

Piotr Walczak, Shen Li, Xumming Ji, Johannes Boltze

Central nervous system (CNS) disorders are usually characterized by a complex pathophysiology. The last issue of Neuroprotection featured reviews and research articles looking at peripheral factors such as the gut microbiome or a history of pre-eclampsia and their impact on CNS conditions. Articles presented in the current issue of Neuroprotection will shift the focus back to the CNS but will continue to provide insights from recent research that help to better understand the pathophysiological complexity of CNS conditions.

Neuroinflammation is known to be a hallmark and major contributor to many CNS diseases. It comprises both peripheral and central immune cells and can be modulated by frequent comorbidities such as hypertension. Moreover, neuroinflammatory processes can involve cell populations not primarily characterized as immune cells. Psychiatric conditions, including major depressive disorders (MDD), are increasingly recognized to be linked to neuroinflammation but also to systemic comorbidities, stress and aging. A better understanding of neuroinflammatory processes in the context of psychiatric conditions may help to identify novel therapeutic targets for better and potentially causal treatment strategies.

Neuroprotection, September 2025

Development of biological soil crusts at the soil surface influences the persistence and movement of crop protection products

Laurence Hand, Mark C.J. Day, Carol Nichols, Hendrik Schäfer, Samantha Marshall, Gary D. Bending

Laboratory soil biodegradation studies required for approval of crop protection products (CPPs) are performed under continuous darkness, nullifying any potential contributions of algal and moss dominated biological soil crusts (BSC). There is growing evidence for metabolism of CPPs by phototrophic microorganisms under laboratory conditions, but limited data is available under field conditions. In this study we investigated the impact of the BSC on the fate of two 14C-fungicides under semi-field conditions using different light filters to alter formation of the BSC by exclusion/transmission of UV and photosynthetically active (PAR) wavelengths. Attenuation of PAR light significantly reduced formation of a BSC, which resulted in a significant slowing of the dissipation of benzovindiflupyr, which is known to be susceptible to phototrophic metabolism in aquatic systems, with 12–14 % more parent compound remaining at the end of the study when BSC development was impeded. For paclobutrazol, however, no significant difference in dissipation rate was observed. For both compounds there was significantly less non-extractable residue (NER) formation when BSC development was impeded (4–9 % reduction). Additionally, for both fungicides, the presence of a viable BSC resulted in 10–20 % more movement through the surface 5 mm of the soil, although this effect was limited to the period immediately after application and was likely due to increased porosity of the surface layer. This study confirms that the presence of phototrophs can significantly impact the environmental fate of CPPs on the surface of agricultural fields, either directly through metabolism or indirectly by altering the properties of the surface layer.

Science of The Total Environment November 2025

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