数字农科院2.0

Echinochloa Crus-Galli Genome Analysis Provides I.nsight Into Its Adaptation A nd Invasiveness As A Weed

文献类型： 外文期刊

作者： Guo, LB; Qiu, J; Ye, CY; Jin, GL; Mao, LF; Zhang, HQ; Yang, XF; Peng, Q; Wang, YY; Jia, L; Lin, ZX; Li, GM; Fu, F; Liu, C; Chen, L; Shen, EH; Wang, WD; Chu, QJ; Wu, DY; Wu, SL; Xia, CY; Zhang, YF; Zhou, XM; Zhou, XF; Wu, LM; Song, WJ; Wang, YF; Shu, QY; Aoki, D; Yumoto, E; Yokota, T; Miyamoto, K; Okada, K; Kim, DS; Cai, DG; Zhang, CL; Lou, YG; Qian, Q; Yamaguchi, H; Yamane, H; Kong, CH; Timko, MP; Bai, LY; Fan, LJ

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期刊名称： NATURE COMMUNICATIONS

ISSN： 2041-1723

年卷期： 2017 年 8 卷

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收录情况： JCR（2021版）

摘要： 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.

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