数字农科院2.0

Expression of a mycoparasite protease in plant petals suppresses the petal-mediated infection by necrotrophic pathogens

文献类型： 外文期刊

作者： Yongchun Wang;Han Yu;Yuping Xu;Mingde Wu;Jing Zhang;Kenichi Tsuda;Shengyi Liu;Daohong Jiang;Weidong Chen;Yangdou Wei;Guoqing Li;Long Yang

作者机构：

关键词： Botrytis cinerea;Brassica napus;Coniothyrium minitans;CP: Plants;petal;protease;Sclerotinia sclerotiorum

期刊名称： Cell Reports

ISSN： 2211-1247

年卷期： 2023 年 42 卷 11 期

页码：

收录情况： SCIE（2023版）

摘要： Sclerotinia sclerotiorum and Botrytis cinerea are necrotrophic plant-pathogenic fungi, causing substantial economic losses on many crops. So far, resistant cultivars against these pathogens are unavailable in most crops. Here, we show that the serine protease CmSp1 of Coniothyrium minitans, a well-characterized mycoparasite of S. sclerotiorum, contributed to suppressing the petal-mediated infection by S. sclerotiorum in rapeseed. Application of recombinant CmSp1 proteins facilitates the bulk degradation of S. sclerotiorum proteins and inhibits spore germination and hyphal growth of S. sclerotiorum and B. cinerea, thereby preventing the development of both diseases. Stable transgenic rapeseed plants with tissue-specific expression of CmSp1 in flower petals inhibit the petal-mediated infection by both S. sclerotiorum and B. cinerea, and resulting transgenic plants have no adverse effect on other agronomic traits. Thus, our findings provide a novel mechanism by which a mycoparasite inhibits fungal pathogens and an environmentally friendly disease management strategy.

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