Genome-wide comparative analysis of the Brassica rapa gene space reveals genome shrinkage and differential loss of duplicated genes after whole genome triplication.

ABSTRACT:

Background

Brassica rapa is one of the most economically important vegetable crops worldwide. Owing to its agronomic importance and phylogenetic position, B. rapa provides a crucial reference to understand polyploidy-related crop genome evolution. The high degree of sequence identity and remarkably conserved genome structure between Arabidopsis and Brassica genomes enables comparative tiling sequencing using Arabidopsis sequences as references to select the counterpart regions in B. rapa, which is a strong challenge of structural and comparative crop genomics.

Results

We assembled 65.8 megabase-pairs of non-redundant euchromatic sequence of B. rapa and compared this sequence to the Arabidopsis genome to investigate chromosomal relationships, macrosynteny blocks, and microsyn

SUBMITTER: Mun JH 

PROVIDER: S-EPMC2784326 | biostudies-literature | 2009

REPOSITORIES: biostudies-literature