Interspecific and interploidal gene flow in Central European Arabidopsis (Brassicaceae).

ABSTRACT:

Background

Effects of polyploidisation on gene flow between natural populations are little known. Central European diploid and tetraploid populations of Arabidopsis arenosa and A. lyrata are here used to study interspecific and interploidal gene flow, using a combination of nuclear and plastid markers.

Results

Ploidal levels were confirmed by flow cytometry. Network analyses clearly separated diploids according to species. Tetraploids and diploids were highly intermingled within species, and some tetraploids intermingled with the other species, as well. Isolation with migration analyses suggested interspecific introgression from tetraploid A. arenosa to tetraploid A. lyrata and vice versa, and some interploidal gene flow, which was unidirectional from diploid to tetraploid i

SUBMITTER: Jorgensen MH 

PROVIDER: S-EPMC3247304 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature