Comparative genomic analysis of duplicated homoeologous regions involved in the resistance of Brassica napus to stem canker.

ABSTRACT: All crop species are current or ancient polyploids. Following whole genome duplication, structural and functional modifications result in differential gene content or regulation in the duplicated regions, which can play a fundamental role in the diversification of genes underlying complex traits. We have investigated this issue in Brassica napus, a species with a highly duplicated genome, with the aim of studying the structural and functional organization of duplicated regions involved in quantitative resistance to stem canker, a disease caused by the fungal pathogen Leptosphaeria maculans. Genome-wide association analysis on two oilseed rape panels confirmed that duplicated regions of ancestral blocks E, J, R, U, and W were involved in resistance to stem canker. The structural analysis of

SUBMITTER: Fopa Fomeju B 

PROVIDER: S-EPMC4585320 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature