Echinochloa crus-galli genome analysis provides insight into its adaptation and invasiveness as a weed. Issue 1 (December 2017)

• Record Type: Journal Article
• Authors: Guo, Longbiao; Qiu, Jie; Ye, Chuyu; Jin, Gulei; Mao, Lingfeng; Zhang, Haiqiang; Yang, Xuefang; Peng, Qiong; Wang, Yingying; Jia, Lei; Lin, Zhangxiang; Li, Gengmi; Fu, Fei; Liu, Chen; Chen, Li; Shen, Enhui; Wang, Weidi; Chu, Qinjie; Wu, Dongya; Wu, Sanling; Xia, Chenyang; Zhang, Yongfei; Zhou, Xiaomao; Wang, Lifeng; Wu, Lamei; Song, Weijie; Wang, Yunfei; Shu, Qingyao; Aoki, Daisuke; Yumoto, Emi; Yokota, Takao; Miyamoto, Koji; Okada, Kazunori; Kim, Do-Soon; Cai, Daguang; Zhang, Chulong; Lou, Yonggen; Qian, Qian; Yamaguchi, Hirofumi; Yamane, Hisakazu; Kong, Chui-Hua; Timko, Michael; Bai, Lianyang; Fan, Longjiang;
• Is Part Of: Nature communications. Volume 8:Issue 1(2017)
• Page Start: 1
• Page End: 10
• Publication Date: 2017-12
• Subjects: Biology -- Periodicals; Physical sciences -- Periodicals; 505
• DOI: 10.1038/s41467-017-01067-5
• Languages: English
• ISSNs: 2041-1723

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 speciesE. 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 theE. 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 pathogenicPyricularia oryzae . Our results provide a new understanding of the molecular mechanisms underlying the extreme adaptation of the weed. Barnyardgrass is a problematic agricultural weed. Here, via genomic analysis, Guo et al. identify genes potentially underlying its success, including a gene cluster activated in response to co-cultivation with rice that leads to synthesis of the allelochemical DIMBOA.