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.

Details

Title
Echinochloa crus-galli genome analysis provides insight into its adaptation and invasiveness as a weed
Author
Guo, Longbiao 1   VIAFID ORCID Logo  ; Qiu, Jie 2   VIAFID ORCID Logo  ; Ye, Chuyu 2 ; Jin, Gulei 3 ; Mao, Lingfeng 2 ; Zhang, Haiqiang 2 ; Yang, Xuefang 4 ; Peng, Qiong 5 ; Wang, Yingying 2 ; Jia, Lei 2 ; Lin, Zhangxiang 2 ; Li, Gengmi 1 ; Fu, Fei 2 ; Liu, Chen 2 ; Chen, Li 2 ; Shen, Enhui 2 ; Wang, Weidi 2 ; Chu, Qinjie 2 ; Wu, Dongya 2 ; Wu, Sanling 6 ; Xia, Chenyang 7 ; Zhang, Yongfei 5 ; Zhou, Xiaomao 5 ; Wang, Lifeng 5 ; Wu, Lamei 5 ; Song, Weijie 3 ; Wang, Yunfei 8 ; Qingyao Shu 2   VIAFID ORCID Logo  ; Aoki, Daisuke 9 ; Yumoto, Emi 10 ; Yokota, Takao 10 ; Miyamoto, Koji 10   VIAFID ORCID Logo  ; Okada, Kazunori 11 ; Do-Soon, Kim 12 ; Cai, Daguang 13   VIAFID ORCID Logo  ; Zhang, Chulong 7   VIAFID ORCID Logo  ; Yonggen Lou 7 ; Qian, Qian 1 ; Yamaguchi, Hirofumi 14 ; Yamane, Hisakazu 10 ; Chui-Hua, Kong 4 ; Timko, Michael P 15 ; Bai, Lianyang 5 ; Fan, Longjiang 2 

1  China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China 
2  Institute of Crop Science and Institute of Bioinformatics, Zhejiang University, Hangzhou, China 
3  Guhe Information, Hangzhou, China 
4  College of Resources and Environmental Sciences, China Agricultural University, Beijing, China 
5  Hunan Weed Science Key Laboratory, Hunan Academy of Agriculture Science, Changsha, China 
6  Analysis Center of Agrobiology and Environmental Sciences, Faculty of Agriculture, Life and Environmental Sciences, , Zhejiang University, Hangzhou, China 
7  State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China 
8  Zhejiang Sheng Ting Biotechnology Co., Ltd., Taizhou, China 
9  Department of Bioscience, Faculty of Biotechnology, Fukui Prefectural University, Fukui, Japan 
10  Department of Biosciences, Teikyo University, Tochigi, Japan 
11  Biotechnology Research Center, The University of Tokyo, Tokyo, Japan 
12  Department of Plant Science, Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul, Korea 
13  Department of Molecular Phytopathology and Biotechnology, Christian-Albrechts-University of Kiel, Kiel, Germany 
14  Faculty of Agriculture, Tokyo University of Agriculture, Kanagawa, Japan 
15  Department of Biology, University of Virginia, Charlottesville, VA, USA 
Pages
1-10
Publication year
2017
Publication date
Oct 2017
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-017-01067-5
ProQuest document ID
1952475487
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.