Please find the latest journal publications from the Crop Centre listed below.
Read our articles in the Vegetable Farmer
For a full list of publications from the School of Life Sciences please visit the Latest Journal Publications
Assembly and characterisation of a unique onion diversity set identifies resistance to Fusarium basal rot and improved seedling vigour
Conserving biodiversity is critical for safeguarding future crop production. Onion (Allium cepa L.) is a globally important crop with a very large (16 Gb per 1C) genome which has not been sequenced. Onion yield losses regularly occur worldwide due to Fusarium basal rot. Accessions with strong basal rot resistance and increased seedling vigour were identified along with associated markers, confirming the utility of the diversity set for discovering beneficial traits. The onion diversity set and associated trait data therefore provide a valuable resource for future germplasm selection and onion breeding.
Living on the Edge: Using and Improving Trap Crops for Flea Beetle Management in Small-Scale Cropping Systems
David George, Gordon Port and Rosemary Collier
The use of trap crops to manage pest insects offers an attractive alternative to synthetic pesticides. Trap crops may work particularly well at smaller production scales, being highly amenable where crop diversification and reduction of synthetic inputs are prioritised over yield alone. Our results of a small-scale open field trial showed that a turnip rape trap crop alone reduced flea beetle damage to cauliflower, significantly so later in the season at higher pest pressures, but that addition of tomato companion plants did not improve pest control potential.
Rosemary Collier publications
Using physical barriers to prevent carrot fly (Psila rosae (Fabricius)) damage in domestic production
Anna Platoni, Ian Waghorn, Stephanie Bird, Joe Perry, Rosemary Collier, Gerard Clover
A field experiment was used to assess the effectiveness of different barriers in protecting garden‐scale carrot production from carrot fly (Psila rosae (Fabricius)) damage. Some of the vertical barriers tested were found to provide a useful method of protecting early season carrots from carrot fly in terms of the percentage of carrots free from damage but, under cumulative pest pressure of several generations of carrot fly, such barriers were found to provide insufficient protection
Aquaporins influence seed dormancy and germination in response to stress
Aquaporins influence water flow in plants, yet little is known of their involvement in the water-driven process of seed germination. We therefore investigated their role in seeds in the laboratory and under field and global warming conditions. We propose that the different responses of the seed tonoplast intrinsic proteins contribute to mechanisms that influence dormancy status and the timing of germination under variable soil conditions.
John Clarkson publications
First report of Fusarium oxysproum f.sp.lactucae Race 4 causing lettuce wilt in England and Ireland
An outbreak of lettuce wilt, caused by Fusarium oxysporum f. sp. lactucae, was reported in the UK and Ireland for the first time in October 2017 although earlier observations of the symptoms had been made in August 2017 in Lancashire and summer 2016 in Ireland. The pathogen was identified by genomic analysis as race 4 of F. oxysporum f. sp. lactucae (FOL4), a particularly aggressive strain of the fungus with no known treatment or varietal resistance available. FOL race 4 has recently been identified in another area of the UK (Cambridgeshire) and is a serious threat to UK lettuce production. It is also present in the Netherlands and Belgium.
Plant Disease. February 2019
First report of Fusarium oxysporum and Fusarium redolens causing wilting and yellowing of wild rocket (Diplotaxis tenuifolia) in the UK
This is the first report of Fusarium wilt of rocket in the UK and to our knowledge the first ever report of F. redolens causing wilt of wild rocket. F. oxysporum has been reported to cause wilt of wild rocket in Italy (Garibaldi et al. 2003) whilst F. redolens is known to cause wilt of chickpea (Jimenez-Fernandez et al. 2011).
Plant Disease. February 2019
Transgressive segregation reveals mechanisms of Arabidopsis immunity to Brassica-infecting races of white rust (Albugo candida)
Volkan Cevik, Freddy Boutrot, Wiebke Apel, Alexandre Robert-Seilaniantz, Oliver J. Furzer, Amey Redkar, Baptiste Castel, Paula X. Kover, David C. Prince, Eric B. Holub and Jonathan D. G. Jones
Barley resists wheat-infecting powdery mildew races (and vice versa), and both barley and wheat resist potato late blight. Such “nonhost” resistance could result because the pathogen fails to suppress defense or triggers innate immunity due to failure to evade detection. Albugo candida causes white rust on most Brassicaceae, and we investigated Arabidopsis NHR to Brassica-infecting races. Transgressive segregation for resistance in Arabidopsis recombinant inbred lines revealed genes encoding nucleotide-binding, leucine-rich repeat (NLR) immune receptors. Some of these NLR-encoding genes confer resistance to white rust in Brassica sp. This genetic method thus provides a route to reveal resistance genes for crops, widening the pool from which such genes might be obtained.