Evidence and evolutionary analysis of ancient whole-genome duplication in barley predating the divergence from rice.

ABSTRACT:

Background

Well preserved genomic colinearity among agronomically important grass species such as rice, maize, Sorghum, wheat and barley provides access to whole-genome structure information even in species lacking a reference genome sequence. We investigated footprints of whole-genome duplication (WGD) in barley that shaped the cereal ancestor genome by analyzing shared synteny with rice using a approximately 2000 gene-based barley genetic map and the rice genome reference sequence.

Results

Based on a recent annotation of the rice genome, we reviewed the WGD in rice and identified 24 pairs of duplicated genomic segments involving 70% of the rice genome. Using 968 putative orthologous gene pairs, synteny covered 89% of the barley genetic map and 63% of the rice genome. We fo

SUBMITTER: Thiel T 

PROVIDER: S-EPMC2746218 | biostudies-literature | 2009 Aug

REPOSITORIES: biostudies-literature