Whole-genome sequencing of Oryza brachyantha reveals mechanisms underlying Oryza genome evolution

Jinfeng Chen, Quanfei Huang, Dongying Gao, Junyi Wang, Yongshan Lang, Tieyan Liu, Bo Li, Zetao Bai, Jose Luis Goicoechea, Chengzhi Liang, Chengbin Chen, Wenli Zhang, Shouhong Sun, Yi Liao, Xuemei Zhang, Lu Yang, Chengli Song, Meijiao Wang, Jinfeng Shi, Geng LiuJunjie Liu, Heling Zhou, Weili Zhou, Qiulin Yu, Na An, Yan Chen, Qingle Cai, Bo Wang, Binghang Liu, Jiumeng Min, Ying Huang, Honglong Wu, Zhenyu Li, Yong Zhang, Ye Yin, Wenqin Song, Jiming Jiang, Scott A. Jackson, Rod A. Wing, Jun Waang, Mingsheng Chen

Research output: Contribution to journalArticlepeer-review

152 Scopus citations


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 the Oryza 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.

Original languageEnglish (US)
Article number1595
JournalNature communications
StatePublished - 2013

ASJC Scopus subject areas

  • General Physics and Astronomy
  • General Chemistry
  • General Biochemistry, Genetics and Molecular Biology


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