Genome-Wide Detection of Genes Under Positive Selection in Worldwide Populations of the Barley Scald Pathogen.

ABSTRACT: Coevolution between hosts and pathogens generates strong selection pressures to maintain resistance and infectivity, respectively. Genomes of plant pathogens often encode major effect loci for the ability to successfully infect specific host genotypes. Hence, spatial heterogeneity in host genotypes coupled with abiotic factors could lead to locally adapted pathogen populations. However, the genetic basis of local adaptation is poorly understood. Rhynchosporium commune, the pathogen causing barley scald disease, interacts at least partially in a gene-for-gene manner with its host. We analyzed global field populations of 125 R. commune isolates to identify candidate genes for local adaptation. Whole genome sequencing data showed that the pathogen is subdivided into three genetic clusters ass

SUBMITTER: Mohd-Assaad N 

PROVIDER: S-EPMC5972619 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature