Botrytis cinerea-induced F-box protein 1 enhances disease resistance by inhibiting JAO/JOX-mediated jasmonic acid catabolism in Arabidopsis
作者机构：The Key Laboratory of Plant Development and Environmental Adaptation BiologyMinistry of EducationSchool of Life SciencesShandong UniversityQingdao 266237China
出 版 物：《Molecular Plant》 (分子植物（英文版）)
年 卷 期：2024年第17卷第2期
页 面：297-311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：This work was supported by the Natural Science Foundation of China(32000224,to L.L.) the Natural Science Foundation of Shandong Province(ZR2021QC142,to W.L.)
主 题：plant immunity BFP1 JAO/JOXs JA catabolism ubiquitination-mediated degradation
摘 要：Jasmonic acid(JA)is a crucial phytohormone that regulates plant *** endogenous JA level is determined by the rates of its biosynthesis and catabolism in *** activation of JA biosynthesis has been well documented;however,how plants repress JA catabolism upon pathogen infection remains *** this study,we identified and characterized Botrytis cinerea-induced F-box protein 1(BFP1)in *** expression of BFP1 was induced by *** in a JA signaling-dependent manner,and BFP1 protein was critical for plant defense against *** and plant response to *** addition,BFP1 overexpression increased plant defenses against broad-spectrum pathogens without fitness *** experiments demonstrated that BFP1 interacts with and mediates the ubiquitination and degrada-tion of jasmonic acid oxidases(JAOs,also known as jasmonate-induced oxygenases,JoXs),the enzymes that hydroxylate JA to *** with this,BFP1 affects the accumulation of JA and 12OH-JA during *** ***,mutation of JAo2 complemented the phenotypes of the bfp1 ***,our results unveil a new mechanism used by plants to activate immune responses upon path-ogeninfection:suppressing JA catabolism.
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