Transgressive segregation reveals mechanisms of <i>Arabidopsis</i> immunity to <i>Brassica</i>-infecting races of white rust (<i>Albugo candida</i>).

ABSTRACT: Arabidopsis thaliana accessions are universally resistant at the adult leaf stage to white rust (Albugo candida) races that infect the crop species Brassica juncea and Brassica oleracea We used transgressive segregation in recombinant inbred lines to test if this apparent species-wide (nonhost) resistance in A. thaliana is due to natural pyramiding of multiple Resistance (R) genes. We screened 593 inbred lines from an Arabidopsis multiparent advanced generation intercross (MAGIC) mapping population, derived from 19 resistant parental accessions, and identified two transgressive segregants that are susceptible to the pathogen. These were crossed to each MAGIC parent, and analysis of resulting F₂ progeny followed by positiona

SUBMITTER: Cevik V 

PROVIDER: S-EPMC6377460 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature