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The OsBDR1-MPK3 module negatively regulates blast resistance by suppressing the jasmonate signaling and terpenoid biosynthesis pathway

文献类型： 外文期刊

作者： Wang, Lanlan 1 ; Xu, Guojuan 1 ; Li, Lihua 1 ; Ruan, Meiying 3 ; Bennion, Anne 4 ; Wang, Guo-Liang 5 ; Li, Ran 6 ; Qu, Shaohong 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, Hangzhou 310021, Peoples R China

2.Chinese Acad Agr Sci, Inst Plant Protect, Beijing 100193, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Vegetables, Hangzhou 310021, Peoples R China

4.Philipps Univ Marburg, SynMikro Ctr Synthet Microbiol, D-35032 Marburg, Germany

5.Ohio State Univ, Dept Plant Pathol, Columbus, OH 43210 USA

6.Zhejiang Univ, Inst Insect Sci, State Key Lab Rice Biol, Key Lab Mol Biol Crop Pathogens & Insects,Minist A, Hangzhou 310058, Peoples R China

关键词： receptor-like kinase; rice blast; MAP kinase; jasmonate; terpene

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.1； 五年影响因子：12.0 ）

ISSN： 0027-8424

年卷期： 2023 年 120 卷 13 期

页码：

收录情况： SCI

摘要： Receptor-like kinases (RLKs) may initiate signaling pathways by perceiving and transmitting environmental signals to cellular machinery and play diverse roles in plant development and stress responses. The rice genome encodes more than one thousand RLKs, but only a small number have been characterized as receptors for phytohormones, polypeptides, elicitors, and effectors. Here, we screened the function of 11 RLKs in rice resistance to the blast fungus Magnaporthe oryzae (M. oryzae) and identified a negative regulator named BDR1 (Blast Disease Resistance 1). The expression of BDR1 was rapidly increased under M. oryzae infection, while silenc-ing or knockout of BDR1 significantly enhanced M. oryzae resistance in two rice varieties. Protein interaction and kinase activity assays indicated that BDR1 directly interacted with and phosphorylated mitogen-activated kinase 3 (MPK3). Knockout of BDR1 compromised M. oryzae-induced MPK3 phosphorylation levels. Moreover, transcriptome analysis revealed that M. oryzae-elicited jasmonate (JA) signaling and terpenoid biosynthesis pathway were negatively regulated by BDR1 and MPK3. Mutation of JA biosynthetic (allene oxide cyclase (AOC)/signaling (MYC2) genes decreased rice resistance to M. oryzae. Besides diterpenoid, the monoterpene linalool and the sesquiterpene caryophyllene were identified as unique defensive compounds against M. oryzae, and their biosynthesis genes (TPS3 and TPS29) were transcription-ally regulated by JA signaling and suppressed by BDR1 and MPK3. These findings demonstrate the existence of a BDR1-MPK3 cascade that negatively mediates rice blast resistance by affecting JA-related defense responses.

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