Aegilops tauschii draft genome sequence reveals a gene repertoire for wheat adaptation

文献类型： 外文期刊

第一作者： Jia, Jizeng

作者： Jia, Jizeng;Kong, Xiuying;Zhao, Guangyao;Zhang, Xueyong;Jing, Ruilian;Ma, Youzhi;Gao, Lifeng;Xia, Xianchun;Zhang, Rongzhi;Liu, Xu;He, Zhonghu;Mao, Long;Zhao, Shancen;Li, Yingrui;He, Weiming;Tao, Yong;Zhang, Chi;Gao, Chuan;Li, Dong;Pan, Shengkai;Zheng, Fengya;Li, Jianwen;Liang, Qinsi;Chen, Jie;Gou, Caiyun;He, Genyun;Luo, Yadan;Xia, Qiuju;Lu, Peng;Wang, Junyi;Zou, Hongfeng;Xu, Junyang;Gao, Jinlong;Quan, Zhiwu;Wang, Jian;Yang, Huanming;Wang, Jun;Zhao, Shancen;Zheng, Fengya;Zhao, Shancen;Zheng, Fengya;Appels, Rudi;Pfeifer, Matthias;Spannagl, Manuel;Mayer, Klaus F. X.;Hu, Qun;Kuang, Hanhui;Wicker, Thomas;Keller, Beat;Middleton, Christopher;Liu, Guangming;He, Zhonghu;Wang, Jun;Wang, Jun

作者机构：

期刊名称：NATURE （ 影响因子：49.962； 五年影响因子：54.637 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： About 8,000 years ago in the Fertile Crescent, a spontaneous hybridization of the wild diploid grass Aegilops tauschii (2n = 14; DD) with the cultivated tetraploid wheat Triticum turgidum (2n = 4x= 28; AABB) resulted in hexaploid wheat (T. aestivum; 2n - 6x=42; AABBDD). Wheat has since become a primary staple crop worldwide as a result of its enhanced adaptability to a wide range of climates and improved grain quality for the production of baker's flour2. Here we describe sequencing the Ae. tauschii genome and obtaining a roughly 90-fold depth of short reads from libraries with various insert sizes, to gain a better understanding of this genetically complex plant. The assembled scaffolds represented 83.4% of the genome, of which 65.9% comprised transposable elements. We generated comprehensive RNA-Seq data and used it to identify 43,150 protein-coding genes, of which 30,697 (71.1%) were uniquely anchored to chromosomes with an integrated high-density genetic map. Whole-genome analysis revealed gene family expansion in Ae. tauschii of agronomically relevant gene families that were associated with disease resistance, abiotic stress tolerance and grain quality. This draft genome sequence provides insight into the environmental adaptation of bread wheat and can aid in defining the large and complicated genomes of wheat species.

分类号： N

  • 相关文献
作者其他论文 更多>>

微信小程序