High genetic diversity at the regional scale and possible speciation in Sebacina epigaea and S. incrustans.

ABSTRACT:

Background

Phylogenetic studies, particularly those based on rDNA sequences from plant roots and basidiomata, have revealed a strikingly high genetic diversity in the Sebacinales. However, the factors determining this genetic diversity at higher and lower taxonomic levels within this order are still unknown. In this study, we analysed patterns of genetic variation within two morphological species, Sebacina epigaea and S. incrustans, based on 340 DNA haplotype sequences of independent genetic markers from the nuclear (ITS + 5.8S + D1/D2, RPB2) and mitochondrial (ATP6) genomes for 98 population samples. By characterising the genetic population structure within these species, we provide insights into species boundaries and the possible factors responsible for genetic diversity at a re

SUBMITTER: Riess K 

PROVIDER: S-EPMC3665632 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature