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短花药野生稻基因组测序发表

已有 3653 次阅读 2013-3-13 07:08 |个人分类:论文交流|系统分类:论文交流| 基因组, 野生

由中科院遗传所陈明生老师为通讯作者的野生稻基因组测序于Nature Communication发表。
对这方面不是很懂,给需要的朋友提供参考。
Whole-genome sequencing of Oryza brachyantha reveals mechanisms underlyingOryza genome evolution

Abstract
The wild species of the genus Oryza contain a largely untapped reservoir of agronomically important genes for rice improvement. Here we report the 261-Mb de novo assembled genome sequence of Oryza brachyantha. Low activity of long-terminal repeat retrotransposons and massive internal deletions of ancient long-terminal repeat elements lead to the compact genome of Oryza brachyantha. We model 32,038 protein-coding genes in the Oryza brachyantha genome, of which only 70% are located in collinear positions in comparison with the rice genome. Analysing breakpoints of non-collinear genes suggests that double-strand break repair through non-homologous end joining has an important role in gene movement and erosion of collinearity in theOryza genomes. Transition of euchromatin to heterochromatin in the rice genome is accompanied by segmental and tandem duplications, further expanded by transposable element insertions. The high-quality reference genome sequence of Oryza brachyantha provides an important resource for functional and evolutionary studies in the genus Oryza.

文章链接:http://www.nature.com/ncomms/journal/v4/n3/full/ncomms2596.html


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