Recent and ancient signature of balancing selection around the S-locus in Arabidopsis halleri and A. lyrata.

ABSTRACT: Balancing selection can maintain different alleles over long evolutionary times. Beyond this direct effect on the molecular targets of selection, balancing selection is also expected to increase neutral polymorphism in linked genome regions, in inverse proportion to their genetic map distances from the selected sites. The genes controlling plant self-incompatibility are subject to one of the strongest forms of balancing selection, and they show clear signatures of balancing selection. The genome region containing those genes (the S-locus) is generally described as nonrecombining, and the physical size of the region with low recombination has recently been established in a few species. However, the size of the region showing the indirect footprints of selection due to linkage to the S-locus

SUBMITTER: Roux C 

PROVIDER: S-EPMC3548311 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature