Phylogenetic analysis of mitochondrial substitution rate variation in the angiosperm tribe Sileneae.

ABSTRACT:

Background

Recent phylogenetic studies have revealed that the mitochondrial genome of the angiosperm Silene noctiflora (Caryophyllaceae) has experienced a massive mutation-driven acceleration in substitution rate, placing it among the fastest evolving eukaryotic genomes ever identified. To date, it appears that other species within Silene have maintained more typical substitution rates, suggesting that the acceleration in S. noctiflora is a recent and isolated evolutionary event. This assessment, however, is based on a very limited sampling of taxa within this diverse genus.

Results

We analyzed the substitution rates in 4 mitochondrial genes (atp1, atp9, cox3 and nad9) across a broad sample of 74 species within Silene and related genera in the tribe Sileneae. We found that S

SUBMITTER: Sloan DB 

PROVIDER: S-EPMC2777880 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature