A new set of international <i>Leptosphaeria maculans</i> isolates as a resource for elucidation of the basis and evolution of blackleg disease on <i>Brassica napus</i>

Abstract A collection of isolates the fungi Leptosphaeria maculans and L . biglobosa , which cause blackleg disease on Brassica napus (canola/oilseed rape) other Brassicaceae species, was assembled to represent global diversity these pathogens a resource for international research. The consists 226 (205 21 ) from 11 countries. genomes all 205 were sequenced, distribution identity avirulence gene alleles determined based genotypic information phenotypic reactions B lines that hosted specific resistance genes. Whilst frequencies some consistent across each regions, others differed dramatically, potentially reflecting canola/oilseed rape cultivars grown in those Analyses single‐nucleotide polymorphism (SNP) within revealed geographical separation populations. This "open access" provides standardized set can be used define basis how fungal disease, as tool discovery new traits species.