Mechanisms underlying legume-rhizobium symbioses

作     者：Jun Yang Liying Lan Yue Jin Nan Yu Dong Wang Ertao Wang 

作者机构：Shanghai Key Laboratory of Plant Molecular SciencesCollege of Life SciencesShanghai Normal UniversityShanghai200234 China National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyShanghai Institutes for Biological Sciencesthe Chinese Academy of SciencesShanghai200234 China Department of Biochemistry and Molecular BiologyUniversity of MassachusettsAmherst01003 USA 

出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)

年 卷 期：2022年第64卷第2期

页      面：244-267页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0903[农学-农业资源与环境] 090302[农学-植物营养学] 

基　　金：supported by grants from the National Natural Science Foundation of China(32070270 32050081 and 31700208)。 

主　　题：nodule organogenesis plant immunity root nodule symbiosis 

摘      要：Legumes,unlike most land plants,can form symbiotic root nodules with nitrogen-fixing bacteria to secure nitrogen for growth.The formation of nitrogen-fixing nodules on legume roots requires the coordination of rhizobial infection at the root epidermis with cell division in the cortex.The nodules house the nitrogen-fixing rhizobia in organelle-like structures known as symbiosomes,which enable nitrogen fixation and facilitate the exchange of metabolites between the host and symbionts.In addition to this beneficial interaction,legumes are continuously exposed to would-be pathogenic microbes;therefore the ability to discriminate pathogens from symbionts is a major determinant of plant survival under natural conditions.Here,we summarize recent advances in the understanding of root nodule symbiosis signaling,transcriptional regulation,and regulation of plant immunity during legume-rhizobium symbiosis.In addition,we propose several important questions to be addressed and provide insights into the potential for engineering the capacity to fix nitrogen in legume and nonlegume plants.