盐胁迫环境下植物促生菌的作用机制研究进展  

Research Progress on the Action Mechanism of Plant Growth-promoting Bacteria Under Salt Stress

作　　者：纪超 王晓辉[2] 刘训理[1] JI Chao;WANG Xiao-hui;LIU Xun-li(State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River,College of Forestry,Shandong Agricultural University,Tai’an 271018;College of Life Sciences,Shandong Agricultural University,Tai’an 271018)

机构地区：[1]山东农业大学林学院黄河下游森林培育国家林业和草原局重点实验室,泰安271018 [2]山东农业大学生命科学学院,泰安271018

出　　处：《生物技术通报》2020年第4期131-143,共13页Biotechnology Bulletin

基　　金：公益性行业(农业)科研专项(201503112);山东省农业科技资金(林业科技创新)(2019LY003);山东省“双一流”工程(SYL2017XTTD03)。

摘　　要：盐胁迫是限制干旱和半干旱地区作物生产的主要非生物胁迫之一,严重影响作物的生长发育,植物促生菌(Plant growth-promoting bacteria,PGPB)可有效减轻植物的盐胁迫损伤,合理施用PGPB是盐胁迫下促进作物生长的重要途径。本文从盐胁迫环境下PGPB在调节植物激素内稳态、促进养分吸收和诱导植物产生系统耐受性等方面的作用阐述了PGPB提高植物耐盐性、减轻植物胁迫损伤的作用机制。讨论了能够在植物根际稳定定殖并在盐生环境下稳定保持PGP活性的功能菌株对未来农业的可持续发展的重要意义,同时,对该研究方向的重难点和未来的发展趋势作出展望。Salt stress is one of the main abiotic stresses limiting crop production in arid and semi-arid areas,which seriously affects the growth and development of crops.Plant growth-promoting bacteria(PGPB)may effectively reduce salt stress damage of plants,and appropriate application of PGPB is an important way to promote crop growth under salt stress.Here the mechanism of PGPB improving plant salt tolerance and reducing the damage to plant from stress is expounded from the aspects of PGPB regulating plant hormone homeostasis,promoting nutrient absorption and inducing plant system tolerance under salt stress.The great significance for the sustainable development of agriculture in the future while selecting functional strains that can stably colonize in the rhizosphere and maintain PGP activity in halophytic environment is discussed.Meanwhile the important and difficult points of this research direction and the development trend in the future are prospected.

关 键 词：盐胁迫 植物促生菌 植物激素 诱导系统抗性 

分 类 号：Q945.78[生物学—植物学]