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The 14-3-3 protein GF14c positively regulates immunity by modulating the protein homoeostasis of the GRAS protein OsSCL7 in rice

文献类型： 外文期刊

作者： Lu, Ling 1 ; Diao, Zhijuan 1 ; Yang, Dewei 1 ; Wang, Xun 1 ; Zheng, Xingxing 1 ; Xiang, Xinquan 1 ; Xiao, Yueping 1 ; Chen, Zhiwei 1 ; Wang, Wei 1 ; Wu, Yunkun 5 ; Tang, Dingzhong 1 ; Li, Shengping 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Plant Immun Ctr, State Key Lab Ecol Control Fujian Taiwan Crop Pes, Key Lab,Minist Educ Genet Breeding & Multiple Uti, Fuzhou 350002, Peoples R China

2.Fujian Agr & Forestry Univ, Coll Life Sci, Fuzhou, Peoples R China

3.Fujian Acad Agr Sci, Rice Res Inst, Fuzhou, Peoples R China

4.Fujian Agr & Forestry Univ, Fujian Prov Key Lab Crop Breeding Design, Fuzhou, Peoples R China

5.Fujian Normal Univ, Coll Life Sci, Fuzhou, Peoples R China

关键词： 14-3-3; disease resistance; GF14c; GRAS; M; oryzae; OsSCL7; rice

期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.947； 五年影响因子：8.452 ）

ISSN： 0140-7791

年卷期： 2022 年 45 卷 4 期

页码：

收录情况： SCI

摘要： Various types of transcription factors have been reported to be involved in plant-pathogen interactions by regulating defence-related genes. GRAS proteins, plant- specific transcription factors, have been shown to play essential roles in plant growth, development and stress responses. By performing a transcriptome study on rice early defence responses to Magnaporthe oryzae, we identified a GRAS protein, OsSCL7, which was induced by M. oryzae infection. We characterized the function of OsSCL7 in rice disease resistance. OsSCL7 was upregulated upon exposure to M. oryzae and pathogen-associated molecular pattern treatments, and knocking out OsSCL7 resulted in decreased disease resistance of rice to M. oryzae. In contrast, overexpression of OsSCL7 could improve rice disease resistance to M. oryzae. OsSCL7 was mainly localized in the nucleus and showed transcriptional activity. OsSCL7 can interact with GF14c, a 14-3-3 protein, and loss-of-function GF14c leads to enhanced susceptibility to M. oryzae. Additionally, OsSCL7 protein levels were reduced in the gf14c mutant and knocking out OsSCL7 affected the expression of a series of defence-related genes. Taken together, these findings uncover the important roles of OsSCL7 and GF14c in plant immunity and a potential mechanism by which plants fine-tune immunity by regulating the protein stability of a GRAS protein via a 14-3-3 protein.

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