Genomic admixture analysis in European Populus spp. reveals unexpected patterns of reproductive isolation and mating.

ABSTRACT: Admixture between genetically divergent populations facilitates genomic studies of the mechanisms involved in adaptation, reproductive isolation, and speciation, including mapping of the loci involved in these phenomena. Little is known about how pre- and postzygotic barriers will affect the prospects of "admixture mapping" in wild species. We have studied 93 mapped genetic markers (microsatellites, indels, and sequence polymorphisms, ∼60,000 data points) to address this topic in hybrid zones of Populus alba and P. tremula, two widespread, ecologically important forest trees. Using genotype and linkage information and recently developed analytical tools we show that (1) reproductive isolation between these species is much stronger than previously assumed but this cannot prevent the introgr

SUBMITTER: Lexer C 

PROVIDER: S-EPMC2954470 | biostudies-literature | 2010 Oct

REPOSITORIES: biostudies-literature