The MYC2-PUB22-JAZ4 module plays a crucial role in jasmonate signaling in tomato
作者机构：Department of HorticultureZijingang CampusZhejiang UniversityHangzhou 310058China Hainan InstituteZhejiang UniversityYazhou Bay Science and Technology CitySanya 572025China College of HorticultureNorthwest Agriculture&Forestry UniversityXianyang 712100China School of BiosciencesCollege of Life and Environmental SciencesUniversity of BirminghamEdgbaston B152TTUK Key Laboratory of Horticultural Plants Growth and DevelopmentAgricultural Ministry of ChinaZhejiang UniversityHangzhou 310058China
出 版 物：《Molecular Plant》 (分子植物（英文版）)
年 卷 期：2024年第17卷第4期
页 面：598-613页
核心收录：
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学]
基 金：funded by the National Natural Science Foundation of China Projects of International Cooperation and Exchange(32020103013) the National Natural Science Foundation of China(32302532) the Modern Agro-industry Technology Research System of China(CARS-25-02A)
主 题：PUB22 JAZ COI1 MYC2 JA signaling Solanum lycopersicum
摘 要：Jasmonates(JAs),a class of lipid-derived stress hormones,play a crucial role across an array of plant physiological processes and stress *** JA signaling is thought to rely predominantly on the degradation of specific JAZ proteins by SCF^(COI1),it remains unclear whether other pathways are involved in the regulation of JAZ protein ***,we report that PUB22,a plant U-box type E3 ubiquitin ligase,plays a critical role in the regulation of plant resistance against Helicoverpa armigera and other JA responses in *** COI1 physically interacts with JAZ1/2/5/7,PUB22 physically interacts with JAZ1/3/4/***22 ubiquitinates JAZ4 to promote its degradation via the 26S proteasome ***,we observed that pub22 mutants showreduced resistance to ***,whereas jaz4 single mutants and jaz1 jaz3 jaz4 jaz6 quadruple mutants have enhanced *** hypersensitivity of pub22 mutants to herbivores could be partially rescued by JAZ4 ***,we found that expression of PUB22 can be transcriptionally activated by MYC2,thus forming a positive feedback circuit in JA *** noticed that the PUB22-JAZ4 module also regulates other JA responses,including defense against ***,inhibition of root elongation,and anthocyanin *** together,these results indicate that PUB22 plays a crucial role in plant growth and defense responses,together with COI1-regulated JA signaling,by targeting specific JAZs.
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