The Secreted Protein MoHrip1 Is Necessary for the Virulence of Magnaporthe oryzae

文献类型： 外文期刊

第一作者： Nie, Hai-Zhen

作者： Nie, Hai-Zhen;Zhang, Lin;Zhuang, Hui-Qian;Shi, Wen-Jiong;Yang, Xiu-Fen;Qiu, De-Wen;Zeng, Hong-Mei

作者机构：

关键词： Magnaporthe oryzae; MoHrip1; expression pattern; virulence

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1422-0067

年卷期： 2019 年 20 卷 7 期

页码：

收录情况： SCI

摘要： Secreted effectors from Magnaporthe oryzae play critical roles in the interaction with rice to facilitate fungal infection and disease development. M. oryzae-secreted protein MoHrip1 can improve plant defense as an elicitor in vitro, however, its biological function in fungal infection is not clear. In this study, we found that the expression of mohrip1 was significantly induced in the stages of fungal penetration and colonization. Although dispensable for the growth and conidiation, MoHrip1 was necessary for the full virulence of M. oryzae. Deletion of mohrip1 remarkably compromised fungal virulence on rice seedlings and even on rice leaves with wounds. Rice sheath inoculation assay further demonstrated the defects of mohrip1-deleted mutants on penetration and proliferation in rice cells. Additionally, compared with WT and complementation strain, the inoculation of mohrip1-deleted mutants induced a higher expression of specific defense related genes and a higher production of specific defensive compounds in rice leaves. These data collectively indicated that MoHrip1 is necessary for fungal penetration and invasive expansion, and further full virulence of rice blast fungus.

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