Population studies of the wild tomato species Solanum chilense reveal geographically structured major gene-mediated pathogen resistance.

ABSTRACT: Natural plant populations encounter strong pathogen pressure and defence-associated genes are known to be under selection dependent on the pressure by the pathogens. Here, we use populations of the wild tomato Solanum chilense to investigate natural resistance against Cladosporium fulvum, a well-known ascomycete pathogen of domesticated tomatoes. Host populations used are from distinct geographical origins and share a defined evolutionary history. We show that distinct populations of S. chilense differ in resistance against the pathogen. Screening for major resistance gene-mediated pathogen recognition throughout the whole species showed clear geographical differences between populations and complete loss of pathogen recognition in the south of the species range. In ad

SUBMITTER: Kahlon PS 

PROVIDER: S-EPMC7779489 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature