Evidence for Adaptive Introgression of Disease Resistance Genes Among Closely Related Arabidopsis Species.

ABSTRACT: The generation and maintenance of functional variation in the pathogen defense system of plants is central to the constant evolutionary battle between hosts and parasites. If a species is susceptible to a given pathogen, hybridization and subsequent introgression of a resistance allele from a related species can potentially be an important source of new immunity and is therefore expected to be selected for in a process referred to as adaptive introgression. Here, we survey sequence variation in 10 resistance (R-) genes and compare them with 37 reference genes in natural populations of the two closely related and interfertile species: Arabidopsis lyrata and A. halleri The R-genes are highly polymorphic in both species and show clear signs of trans-species

SUBMITTER: Bechsgaard J 

PROVIDER: S-EPMC5555472 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature