Draft Genome of the Wheat A-genome Progenitor Triticum Urartu

Overview

Journal Nature

Specialty Science

Date 2013 Mar 29

PMID 23535596

Citations 319

Authors

Hong-Qing Ling

Shancen Zhao

Dongcheng Liu

Junyi Wang

Hua Sun

Chi Zhang

Huajie Fan

Dong Li

Lingli Dong

Yong Tao

Chuan Gao

Huilan Wu

Yiwen Li

Yan Cui

Xiaosen Guo

Shusong Zheng

Biao Wang

Kang Yu

Qinsi Liang

Wenlong Yang

Xueyuan Lou

Jie Chen

Mingji Feng

Jianbo Jian

Xiaofei Zhang

Guangbin Luo

Ying Jiang

Junjie Liu

Zhaobao Wang

Yuhui Sha

Bairu Zhang

Huajun Wu

Dingzhong Tang

Qianhua Shen

Pengya Xue

Shenhao Zou

Xiujie Wang

Xin Liu

Famin Wang

Yanping Yang

Xueli An

Zhenying Dong

Kunpu Zhang

Xiangqi Zhang

Ming-Cheng Luo

Jan Dvorak

Yiping Tong

Jian Wang

Huanming Yang

Zhensheng Li

Daowen Wang

Aimin Zhang

Jun Wang

Affiliations

Soon will be listed here.

Abstract

Bread wheat (Triticum aestivum, AABBDD) is one of the most widely cultivated and consumed food crops in the world. However, the complex polyploid nature of its genome makes genetic and functional analyses extremely challenging. The A genome, as a basic genome of bread wheat and other polyploid wheats, for example, T. turgidum (AABB), T. timopheevii (AAGG) and T. zhukovskyi (AAGGA(m)A(m)), is central to wheat evolution, domestication and genetic improvement. The progenitor species of the A genome is the diploid wild einkorn wheat T. urartu, which resembles cultivated wheat more extensively than do Aegilops speltoides (the ancestor of the B genome) and Ae. tauschii (the donor of the D genome), especially in the morphology and development of spike and seed. Here we present the generation, assembly and analysis of a whole-genome shotgun draft sequence of the T. urartu genome. We identified protein-coding gene models, performed genome structure analyses and assessed its utility for analysing agronomically important genes and for developing molecular markers. Our T. urartu genome assembly provides a diploid reference for analysis of polyploid wheat genomes and is a valuable resource for the genetic improvement of wheat.

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