Patterns of polymorphism and demographic history in natural populations of Arabidopsis lyrata.

ABSTRACT:

Background

Many of the processes affecting genetic diversity act on local populations. However, studies of plant nucleotide diversity have largely ignored local sampling, making it difficult to infer the demographic history of populations and to assess the importance of local adaptation. Arabidopsis lyrata, a self-incompatible, perennial species with a circumpolar distribution, is an excellent model system in which to study the roles of demographic history and local adaptation in patterning genetic variation.

Principal findings

We studied nucleotide diversity in six natural populations of Arabidopsis lyrata, using 77 loci sampled from 140 chromosomes. The six populations were highly differentiated, with a median FST of 0.52, and structure analysis revealed no evidence of adm

SUBMITTER: Ross-Ibarra J 

PROVIDER: S-EPMC2408968 | biostudies-literature | 2008 Jun

REPOSITORIES: biostudies-literature