Exceptional lability of a genomic complex in rice and its close relatives revealed by interspecific and intraspecific comparison and population analysis.

ABSTRACT:

Background

Extensive DNA rearrangement of genic colinearity, as revealed by comparison of orthologous genomic regions, has been shown to be a general concept describing evolutionary dynamics of plant genomes. However, the nature, timing, lineages and adaptation of local genomic rearrangement in closely related species (e.g., within a genus) and haplotype variation of genomic rearrangement within populations have not been well documented.

Results

We previously identified a hotspot for genic rearrangement and transposon accumulation in the Orp region of Asian rice (Oryza sativa, AA) by comparison with its orthologous region in sorghum. Here, we report the comparative analysis of this region with its orthologous regions in the wild progenitor species (O. nivara, AA) of Asian ri

SUBMITTER: Tian Z 

PROVIDER: S-EPMC3060143 | biostudies-literature | 2011 Mar

REPOSITORIES: biostudies-literature