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A pair of E3 ubiquitin ligases control immunity and flowering by targeting different ELF3 proteins in rice

文献类型： 外文期刊

作者： Xu, Xiao 1 ; Shi, Xuetao 1 ; You, Xiaoman 1 ; Hao, Zeyun 1 ; Wang, Ruyi 1 ; Wang, Min 1 ; He, Feng 1 ; Peng, Shasha 1 ; Tao, Hui 1 ; Liu, Zheng 1 ; Wang, Jisong 1 ; Zhang, Chongyang 1 ; Feng, Qin 1 ; Wu, Weixun 4 ; Wang, Guo-Liang 3 ; Ning, Yuese 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China

2.China Agr Univ, Coll Plant Protect, Agro Biotechnol & Minist Agr, Key Lab Pest Monitoring & Green Management, Beijing 100193, Peoples R China

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

4.China Natl Rice Res Inst, China Natl Ctr Rice Improvement, Hangzhou 311400, Peoples R China

5.China Natl Rice Res Inst, State Key Lab Rice Biol & Breeding, Hangzhou 311400, Peoples R China

期刊名称：DEVELOPMENTAL CELL （ 影响因子：8.7； 五年影响因子：11.4 ）

ISSN： 1534-5807

年卷期： 2024 年 59 卷 20 期

页码：

收录情况： SCI

摘要： The ubiquitin-proteasome system (UPS) plays crucial roles in cellular processes including plant growth, development, and stress responses. In this study, we report that a pair of E3 ubiquitin ligases, AvrPiz-tinteraction protein 6 (APIP6) and IPA1-interaction protein 1 (IPI1), intricately target early flowering3 (ELF3) paralogous proteins to control rice immunity and flowering. APIP6 forms homo-oligomers or hetero-oligomers with IPI1. Both proteins interact with OsELF3-2, promoting its degradation to positively control resistance against the rice blast fungus (Magnaporthe oryzae). Intriguingly, overexpression of IPI1 in Nipponbare caused significantly late-flowering phenotypes similar to the oself3-1 mutant. Except for late flowering, oself3-1 enhances resistance against M. oryzae. IPI1 also interacts with and promotes the degradation OsELF3-1, a paralog of OsELF3-2. Notably, IPI1 and APIP6 synergistically modulate OsELF3s degradation, finely tuning blast disease resistance by targeting OsELF3-2, while IPI1 controls both disease resistance and flowering by targeting OsELF3-1. This study unravels multiple functions for a pair of E3 ligases in rice.

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