Echinochloa crus-galli genome analysis provides insight into its adaptation and invasiveness as a weed

Longbiao Guo, Jie Qiu, Chuyu Ye, Gulei Jin, Lingfeng Mao, Haiqiang Zhang, Xuefang Yang, Qiong Peng, Yingying Wang, Lei Jia, Zhangxiang Lin, Gengmi Li, Fei Fu, Chen Liu, Li Chen, Enhui Shen, Weidi Wang, Qinjie Chu, Dongya Wu, Sanling Wu, Chenyang Xia, Yongfei Zhang, Xiaomao Zhou, Lifeng Wang, Lamei Wu, Weijie Song, Yunfei Wang, Qingyao Shu, Daisuke Aoki, Emi Yumoto, Takao Yokota, Koji Miyamoto, Kazunori Okada, Do-Soon Kim, Daguang Cai, Chulong Zhang, Yonggen Lou, Qian Qian, Hirofumi Yamaguchi, Hisakazu Yamane, Chui-Hua Kong, Michael P. Timko, Lianyang Bai () and Longjiang Fan ()
Additional contact information
Longbiao Guo: Chinese Academy of Agricultural Sciences
Jie Qiu: Zhejiang University
Chuyu Ye: Zhejiang University
Gulei Jin: Guhe Information
Lingfeng Mao: Zhejiang University
Haiqiang Zhang: Zhejiang University
Xuefang Yang: China Agricultural University
Qiong Peng: Hunan Academy of Agriculture Science
Yingying Wang: Zhejiang University
Lei Jia: Zhejiang University
Zhangxiang Lin: Zhejiang University
Gengmi Li: Chinese Academy of Agricultural Sciences
Fei Fu: Zhejiang University
Chen Liu: Zhejiang University
Li Chen: Zhejiang University
Enhui Shen: Zhejiang University
Weidi Wang: Zhejiang University
Qinjie Chu: Zhejiang University
Dongya Wu: Zhejiang University
Sanling Wu: , Zhejiang University
Chenyang Xia: Zhejiang University
Yongfei Zhang: Hunan Academy of Agriculture Science
Xiaomao Zhou: Hunan Academy of Agriculture Science
Lifeng Wang: Hunan Academy of Agriculture Science
Lamei Wu: Hunan Academy of Agriculture Science
Weijie Song: Guhe Information
Yunfei Wang: Zhejiang Sheng Ting Biotechnology Co., Ltd.
Qingyao Shu: Zhejiang University
Daisuke Aoki: Fukui Prefectural University
Emi Yumoto: Teikyo University
Takao Yokota: Teikyo University
Koji Miyamoto: Teikyo University
Kazunori Okada: The University of Tokyo
Do-Soon Kim: Seoul National University
Daguang Cai: Christian-Albrechts-University of Kiel
Chulong Zhang: Zhejiang University
Yonggen Lou: Zhejiang University
Qian Qian: Chinese Academy of Agricultural Sciences
Hirofumi Yamaguchi: Tokyo University of Agriculture
Hisakazu Yamane: Teikyo University
Chui-Hua Kong: China Agricultural University
Michael P. Timko: University of Virginia
Lianyang Bai: Hunan Academy of Agriculture Science
Longjiang Fan: Zhejiang University

Nature Communications, 2017, vol. 8, issue 1, 1-10

Abstract: Abstract Barnyardgrass (Echinochloa crus-galli) is a pernicious weed in agricultural fields worldwide. The molecular mechanisms underlying its success in the absence of human intervention are presently unknown. Here we report a draft genome sequence of the hexaploid species E. crus-galli, i.e., a 1.27 Gb assembly representing 90.7% of the predicted genome size. An extremely large repertoire of genes encoding cytochrome P450 monooxygenases and glutathione S-transferases associated with detoxification are found. Two gene clusters involved in the biosynthesis of an allelochemical 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) and a phytoalexin momilactone A are found in the E. crus-galli genome, respectively. The allelochemical DIMBOA gene cluster is activated in response to co-cultivation with rice, while the phytoalexin momilactone A gene cluster specifically to infection by pathogenic Pyricularia oryzae. Our results provide a new understanding of the molecular mechanisms underlying the extreme adaptation of the weed.

Date: 2017
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DOI: 10.1038/s41467-017-01067-5

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