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

Author: Genyun He
Author: Jizeng Jia
Author: Shancen Zhao
Author: Xiuying Kong
Author: Yingrui Li
Author: Guangyao Zhao
Author: Weiming He
Author: Appels, R.
Author: Pfeifer, M.
Author: Yong Tao
Author: Xueyong Zhang
Author: Ruilian Jing
Author: Chi Zhang
Author: Youzhi Ma
Author: Lifeng Gao
Author: Chuan Gao
Author: Spannagl, M.
Author: Mayer, K.F.X.
Author: Dong Li
Author: Shengkai Pan
Author: Fengya Zheng
Author: Qun Hu
Author: Xianchun Xia
Author: Jianwen Li
Author: Qinsi Liang
Author: Jie Chen
Author: Wicker, T.
Author: Caiyun Gou,
Author: Hanhui Kuang
Author: Yadan Luo
Author: Keller, B.
Author: Qiuju Xia,
Author: Peng Lu
Author: Junyi Wang
Author: Hongfeng Zou
Author: Rongzhi Zhang
Author: Junyang Xu
Author: Jinlong Gao
Author: Middleton, C.
Author: Zhiwu Quan
Author: Guangming Liu
Author: Jian Wang
Author: Huanming Yang
Author: Xu Liu
Author: He, Zhonghu
Author: Long Mao
Author: Jun Wang
Year: 2013
ISSN: 0028-0836
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.
Format: PDF
Language: English
Publisher: Springer Nature
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Type: Article
Pages: 91-95
Volume: 496
DOI: 10.1038/nature12028
Publisher URI:
Agrovoc: WHEAT
Journal: Nature

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This item appears in the following Collection(s)

  • Genetic Resources
    Genetic Resources including germplasm collections, wild relatives, genotyping, genomics, and IP
  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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