Award details

Genetic variation in plant pathogenic fungi and downy mildews.

Reference	BBS/E/C/00823341
Principal Investigator / Supervisor	Professor John Lucas
Co-Investigators / Co-Supervisors
Institution	Rothamsted Research
Department	Rothamsted Research Department
Funding type	Research
Value (£)	109,309
Status	Completed
Type	Institute Project
Start date	01/04/1997
End date	01/05/1998
Duration	13 months

Abstract

Details should only be considered in the context of PU information. Plant pathogenic fungi exhibit variation in important pathological traits such as host range and response to fungicides. The mechanisms and genetic control of such variation are not fully defined for most pathosystems. This project is investigating two contrasting pathogens, downy mildew of crucifers (Peronospora parasitica), an obligate biotroph, and eyespot of cereals Pseudocercosporella herpotrichoides, a culturable fungus with a saprophytic survival stage. P. parasitica pathotypes adapted to different Brassica species have been identified; this work has also identified host genotypes exhibiting differential resistance to pathogen isolates. In collaboration with the Department of Life Science, University of Nottingham, molecular markers such as RFLPs and RAPDs are being developed to characterize isolates from different hosts, identify hybrids, and to aid fingerprinting and mapping of the pathogen genome. The next step is to identify markers linked to specfic genes, for instance for avirulence on particular hosts, or for fungicide resistance. In the wheat x P. herpotrichoides interaction, molecular markers are being developed to analyse population structure, with particular reference to fungicide response. This project involves collaboration with AgrEvo, the University of Nottingham, and IACR RES. Recent highlights include demonstration of a sexual stage in the R-pathotype (Plant Path.43, 1039), and establishing the infectivity of ascospores (Phytopath.85,918)

Summary

unavailable

Committee	Closed Committee - Agri-food (AF)
Research Topics	X – not assigned to a current Research Topic
Research Priority	X – Research Priority information not available
Research Initiative	X - not in an Initiative
Funding Scheme	X – not Funded via a specific Funding Scheme

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