Sustainable strategies for managing Brassica napus (oilseed rape) resistance to

Control of phoma stem canker in oil rapeseed crops typically depends on cultivars resistant to L. Maculans, the virus that causes it. Recently, virus populations have overcome resistance, causing serious canker outbreaks in Australia and Europe. There is an urgent need to find sources of resistance to L. maculans. This book synthesizes studies in management of resistance genes control L. maculans, and will stimulate further research on this important model system.

InhaltsangabeWorld-wide importance of phoma stem canker (Leptosphaeria maculans and L. biglobosa) on oilseed rape (Brassica napus).- Genetic linkage maps and genomic organization in Leptosphaeria maculans.- Major gene resistance in Brassica napus (oilseed rape) is overcome by changes in virulence of populations of Leptosphaeria maculans in France and Australia.- Major gene and polygenic resistance to Leptosphaeria maculans in oilseed rape (Brassica napus).- A large-scale survey of races of Leptosphaeria maculans occurring on oilseed rape in France.- Frequency of avirulence alleles in field populations of Leptosphaeria maculans in Europe.- Fitness cost associated with loss of the AvrLm4 avirulence function in Leptosphaeria maculans (phoma stem canker of oilseed rape).- Improved resistance management for durable disease control: A case study of phoma stem canker of oilseed rape (Brassica napus).- Durability of resistance and cost of virulence.- Dissemination of information about management strategies and changes in farming practices for the exploitation of resistance to Leptosphaeria maculans (phoma stem canker) in oilseed rape cultivars.