Evidence for nonallopatric speciation among closely related sympatric Heliotropium species in the Atacama Desert.

ABSTRACT: The genetic structure of populations of closely related, sympatric species may hold the signature of the geographical mode of the speciation process. In fully allopatric speciation, it is expected that genetic differentiation between species is homogeneously distributed across the genome. In nonallopatric speciation, the genomes may remain undifferentiated to a large extent. In this article, we analyzed the genetic structure of five sympatric species from the plant genus Heliotropium in the Atacama Desert. We used amplified fragment length polymorphisms (AFLPs) to characterize the genetic structure of these species and evaluate their genetic differentiation as well as the number of loci subject to positive selection using divergence outlier analysis (DOA). The five species form distinguish

SUBMITTER: Luebert F 

PROVIDER: S-EPMC3925428 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature