A CNL protein in wild emmer wheat confers powdery mildew resistance

文献类型： 外文期刊

第一作者： Li, Miaomiao

作者： Li, Miaomiao;Dong, Lingli;Li, Beibei;Xie, Jingzhong;Wu, Qiuhong;Chen, Yongxing;Lu, Ping;Guo, Guanghao;Zhang, Huaizhi;Zhang, Panpan;Zhu, Keyu;Li, Yiwen;Liu, Zhiyong;Li, Beibei;Chen, Yongxing;Guo, Guanghao;Zhang, Huaizhi;Zhang, Panpan;Zhu, Keyu;Liu, Zhiyong;Wang, Zhengzhong;Zhang, Yan;Qiu, Dan;Li, Yahui;Li, Hongjie;Shi, Wenqi;Yang, Lijun;Yu, Dazhao;Wang, Rongge;Yuan, Chengguo;Liu, Wei;Luo, Ming-Cheng;Fahima, Tzion;Nevo, Eviatar

作者机构：

关键词： Blumeria graminisf; sp; tritici; coiled-coil-nucleotide-binding site-leucine-rich repeat (CC-NBS-LRR); Pm41; positional cloning; Triticum turgidumssp; dicoccoides

期刊名称：NEW PHYTOLOGIST （ 影响因子：10.151； 五年影响因子：10.475 ）

ISSN： 0028-646X

年卷期： 2020 年 228 卷 3 期

页码：

收录情况： SCI

摘要： Powdery mildew, a fungal disease caused byBlumeria graminisf. sp.tritici(Bgt), has a serious impact on wheat production. Loss of resistance in cultivars prompts a continuing search for new sources of resistance. Wild emmer wheat (Triticum turgidumssp.dicoccoides, WEW), the progenitor of both modern tetraploid and hexaploid wheats, harbors many powdery mildew resistance genes. We report here the positional cloning and functional characterization ofPm41, a powdery mildew resistance gene derived from WEW, which encodes a coiled-coil, nucleotide-binding site and leucine-rich repeat protein (CNL). Mutagenesis and stable genetic transformation confirmed the function ofPm41againstBgtinfection in wheat. We demonstrated thatPm41was present at a very low frequency (1.81%) only in southern WEW populations. It was absent in other WEW populations, domesticated emmer, durum, and common wheat, suggesting that the ancestralPm41was restricted to its place of origin and was not incorporated into domesticated wheat. Our findings emphasize the importance of conservation and exploitation of the primary WEW gene pool, as a valuable resource for discovery of resistance genes for improvement of modern wheat cultivars.

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