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
Research on integrated pest and disease management in carrot crops
The paper describes research on integrated pest and disease management in carrot crops, focusing on treatment timings for control of Psila rosae with a relatively new insecticide, Coragen®, the development of a forecast of the timing of the migration of Cavariella aegopodii into carrot crops and the use of biofumigation for control of soilborne plant pathogens such as Sclerotinia sclerotiorum. All three approaches show promise as components of integrated pest and disease management programmes.
Development of a Statistical Crop Model to Explain the Relationship between Seed Yield and Phenotypic Diversity within the Brassica napus Genepool
Emma J Bennett, Christopher J Brignell, Pierre WC Carion, Samantha M Cook, Peter J Eastmond, Graham R Teakle, John P Hammnd, Clare Love, Graham J King, Jeremy A Roberts and Carol Wagstaff
Plants are extremely versatile organisms that respond to the environment in which they find themselves, but a large part of their development is under genetic regulation. The links between developmental parameters and yield are poorly understood in oilseed rape; understanding this relationship will help growers to predict their yields more accurately and breeders to focus on traits that may lead to yield improvements. Assessing the diversity that exists within the B. napus gene pool has highlighted architectural, seed and mineral composition traits that should be targeted in breeding programmes through the development of linked markers to improve crop yields.
Eukaryotic translation initiation factor 2B-beta (eIF2Bβ), a new class of plant virus resistance gene
Shopan Jannat, Haipeng Mou, Lili Zhang, Changtong Zhang, Weiwei Ma, John A. Walsh, Zhongyuan Hu, Jinghua Yang, Mingfang Zhang
Recessive resistances to plant viruses in the Potyvirus genus have been found to be based on mutations in the plant eukaryotic translation initiation factors, eIF4E and eIF4G or their isoforms. Here we report that natural, monogenic recessive resistance to the potyvirus Turnip mosaic virus (TuMV) has been found in a number of mustard (Brassica juncea) accessions. Our findings provide a new target for seeking natural resistance to potyviruses and new opportunities for the control of potyviruses using genome editing techniques targeted on eIF2Bβ.
John Clarkson Publications
First report of sclerotinia subarctica nom. prov. (Sclerotinia sp. 1) causing stem rot on turnip rape (Brassica rapa subsp. oleifera) in Norway
Brodal G, Warmington R, Grieu C, Ficke A, Clarkson JP
During August 2013, white-grayish lesions, typical of Sclerotinia stem rot, had developed around leaf axils on the stems of turnip rape ‘Pepita’ in a field at the NIBIO research station Apelsvoll in Oppland County, Norway. Sclerotina were collected from inside infected turnip rape stubble and from harvested seeds, surface sterilized, bisected, and placed onto potato dextrose agar (PDA). Although S. subarctica has been previously reported on wild hosts, this is the first report of the pathogen on a crop plant in Norway.
First report of Fusarium oxysporum causing a vascular wilt of statice (Limonium sinuatum) in the UK
Statice (Limonium sinuatum) is grown commercially in many countries as a cut-flower crop. Fungal and oomycete pathogens reported for this plant include Colletotrichum, Botrytis, Cercospora, Rhizoctonia, and Peronospora (Moorman 2016). In the UK, 80% of all statice production (2.5 ha, value $800,000) is through a specialist grower in Lincolnshire. To our knowledge, this is the first report of Fusarium wilt of statice. Further work is required to establish the host range of this potentially new forma specialis.
Who is sowing our seeds? A systematic review of the use of plant genetic resources in research
Towards new sources of resistance to the currant-lettuce aphid (Nasonovia ribisnigri)
Domesticated lettuce varieties encompass much morphological variation across a range of crop type groups, with large collections of cultivars and landrace accessions maintained in genebanks. Additional variation not captured during domestication, present in ancestral wild relatives, represents a potentially rich source of alleles that can deliver to sustainable crop production. However, these large collections are difficult and costly to screen for many agronomically important traits.
In this paper, we describe the generation of a diversity collection of 96 lettuce and wild species accessions that are amenable to routine phenotypic analysis and their genotypic characterization with a panel of 682 newly developed expressed sequence tag (EST)-linked KASP™ single nucleotide polymorphism (SNP) markers that are anchored to the draft Lactuca sativa genome assembly. To exemplify the utility of these resources, we screened the collection for putative sources of resistance to currant-lettuce aphid (Nasonovia ribisnigri) and carried out association analyses to look for potential SNPs linked to resistance.
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