Great influence of geographic isolation on the genetic differentiation of Myriophyllum spicatum under a steep environmental gradient.

ABSTRACT: Understanding how natural processes affect population genetic structures is an important issue in evolutionary biology. One effective method is to assess the relative importance of environmental and geographical factors in the genetic structure of populations. In this study, we examined the spatial genetic variation of thirteen Myriophyllum spicatum populations from the Qinghai-Tibetan Plateau (QTP) and adjacent highlands (Yunnan-Guizhou Plateau, YGP) by using microsatellite loci and environmental and geographical factors. Bioclim layers, hydrological properties and elevation were considered as environmental variables and reduced by principal component analysis. The genetic isolation by geographic distance (IBD) was tested by Mantel tests and the relative importance of environmental variab

SUBMITTER: Wu Z 

PROVIDER: S-EPMC4616052 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature