Range expansion of a selfing polyploid plant despite widespread genetic uniformity.

ABSTRACT:

Background and aims

Ongoing and previous range expansions have a strong influence on population genetic structure of plants. In turn, genetic variation in the new range may affect the population dynamics and the expansion process. The annual Ceratocapnos claviculata (Papaveraceae) has expanded its Atlantic European range in recent decades towards the north and east. Patterns of genetic diversity were investigated across the native range to assess current population structure and phylogeographical patterns. A test was then made as to whether genetic diversity is reduced in the neophytic range and an attempt was made to identify source regions of the expansion.

Methods

Samples were taken from 55 populations in the native and 34 populations in the neophytic range (Sweden, north

SUBMITTER: Voss N 

PROVIDER: S-EPMC3400446 | biostudies-literature | 2012 Aug

REPOSITORIES: biostudies-literature