Fine-scale geographical structure, intra-individual polymorphism and recombination in nuclear ribosomal internal transcribed spacers in Armeria (Plumbaginaceae).

ABSTRACT:

Background and aims

Isolation and drift are the main causes for geographic structure of molecular variation. In contrast, the one found in a previous survey in Armeria (Plumbaginaceae) for nuclear ribosomal ITS multicopy regions was species-independent and has been hypothesized to be due to extensive gene-flow and biased concerted evolution. Since this was inferred from a genus-level phylogenetic analysis, the aim of this study was to check for the occurrence of such structure and the validity of the proposed model at a local scale, in a southern Spanish massif (Sierra Nevada), as well as to examine the evolutionary implications at the organism level.

Methods

In addition to 117 sequences of direct PCR products from genomic DNA, 50 sequences of PCR products from cloned DNA we

SUBMITTER: Nieto Feliner G 

PROVIDER: S-EPMC4241081 | biostudies-literature | 2004 Feb

REPOSITORIES: biostudies-literature