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Influence of host genotype on take-all inoculum build-up in the soil

Reference	BBS/E/C/00004985
Principal Investigator / Supervisor	Professor Kim Hammond-Kosack
Co-Investigators / Co-Supervisors	Mr Richard Gutteridge
Institution	Rothamsted Research
Department	Rothamsted Research Department
Funding type	Research
Value (£)	168,184
Status	Completed
Type	Institute Project
Start date	01/04/2008
End date	31/03/2012
Duration	48 months

Abstract

Take-all, caused by the fungus Gaeumannomyces graminis var. tritici, is a damaging root disease of cereals. In individual fields,, the disease can be avoided if alternate susceptible and non-susceptible crops are grown, i.e. in a cereal/break-crop rotation. However, It becomes a problems arise when two or more cereal cropss are grown consecutively, which is now common practice. The fungus survives between crops as mycelium in or on host residues, which is the most important source of inoculum for the following crop. Previous work at Rothamstedi n the 1970s has shown that take-all inoculum starts to build-up in the soil in April/May and, in favourable conditions, continues through to harvest. Recent results from within the WGIN programme suggests that cultivars may differ in their ability to build up the take-all fungus in the soil when grown as a first crop, i.e. At the start of the take-all epidemic. This may have important implications in future plant breeding, as well as, take-all management. More information on this phenomenon is required on the currently grown cultivars, i.e. Those on the recommended list, and on different soil types. Results from these studies will be used to design field experiments to create different take-all disease pressures for a second wheat crop. This will test the hypothesis that cultivars may also differ in their susceptibilty/tolerance to take-all under different disease pressures.

Summary

unavailable

Committee	Closed Committee - Agri-food (AF)
Research Topics	Crop Science, Microbiology, Plant Science
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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