Analysis of complete nucleotide sequences of 12 Gossypium chloroplast genomes: origin and evolution of allotetraploids.

ABSTRACT:

Background

Cotton (Gossypium spp.) is a model system for the analysis of polyploidization. Although ascertaining the donor species of allotetraploid cotton has been intensively studied, sequence comparison of Gossypium chloroplast genomes is still of interest to understand the mechanisms underlining the evolution of Gossypium allotetraploids, while it is generally accepted that the parents were A- and D-genome containing species. Here we performed a comparative analysis of 13 Gossypium chloroplast genomes, twelve of which are presented here for the first time.

Methodology/principal findings

The size of 12 chloroplast genomes under study varied from 159,959 bp to 160,433 bp. The chromosomes were highly similar having >98% sequence identity. They encoded the same set of 112 un

SUBMITTER: Xu Q 

PROVIDER: S-EPMC3411646 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature