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Title Aegilops tauschii draft genome sequence reveals a gene repertoire for wheat adaptation
 
Names Jizeng Jia
Shancen Zhao
Xiuying Kong
Yingrui Li
Guangyao Zhao
Weiming He
Appels, R.
Pfeifer, M.
Yong Tao
Xueyong Zhang
Ruilian Jing
Chi Zhang
Youzhi Ma
Lifeng Gao
Chuan Gao
Spannagl, M.
Mayer, K.F.X.
Dong Li
Shengkai Pan
Fengya Zheng
Qun Hu
Xianchun Xia
Jianwen Li
Qinsi Liang
Chen, J.
Wicker, T.
Caiyun Gou
Hanhui Kuang
Genyun He
Yadan Luo
Keller, B.
Qiuju Xia
Peng Lu
Junyi Wang
Hongfeng Zou
Rongzhi Zhang
Junyang Xu
Jinlong Gao
Middleton, C.
Zhiwu Quan
Guangming Liu
Jian Wang
Huanming Yang
Liu Xu
He Zhonghu
Long Mao
Jun Wang
Date Issued 2013 (iso8601)
Abstract 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)1, 2. 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.
Genre Article
Access Condition Open Access
Identifier 0028-0836