Blackleg disease, caused by the fungal pathogen Leptosphaeria maculans, is most devastating disease of canola (Brassica napus, oilseed rape) worldwide. Breeding for genetic resistance widely used tool controlling this and minimizing impact on yield. To date, five genes (Rlm2, LepR3, Rlm4, Rlm7, Rlm9) have been cloned from B. representing alleles two different gene loci, Rlm2-LepR3 Rlm4-7-9. We ...