Mechanisms underlying legume-rhizobium symbioses

查看全文 作　　者：Jun [2]Yang;Liying [2]Lan;Yue [1]Jin;Nan [1]Yu;Dong [3]Wang;Ertao [2]Wang

机构地区：[1]Shanghai Key Laboratory of Plant Molecular Sciences,College of Life Sciences,Shanghai Normal University,Shanghai,200234 China;[2]National Key Laboratory of Plant Molecular Genetics,CAS Center for Excellence in Molecular Plant Sciences,Institute of Plant Physiology and Ecology,Shanghai Institutes for Biological Sciences,the Chinese Academy of Sciences,Shanghai,200234 China;[3]Department of Biochemistry and Molecular Biology,University of Massachusetts,Amherst,01003 USA

出　　处：《Journal of Integrative Plant Biology》索引2022年第64卷第2期,共24页

基　　金：supported by grants from the National Natural Science Foundation of China(32070270,32050081,and 31700208)。 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. 关键词：nodule organogenesis plant immunity root nodule symbiosis

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Mechanisms underlying legume-rhizobium symbioses

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