植物根际促生菌诱导植物耐盐促生作用机制  

Mechanisms of Salt Tolerance and Growth Promotion in Plant Induced by Plant Growth-Promoting Rhizobacteria

作　　者：潘晶 黄翠华 彭飞 尤全刚 刘斐耀 薛娴 PAN Jing;HUANG Cui-hua;PENG Fei;YOU Quan-gang;LIU Fei-yao;XUE Xian(Drylands Salinization Research Station,Key Laboratory of Desert and Desertification,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000;University of Chinese Academy of Sciences,Beijing 100049)

机构地区：[1]中国科学院西北生态环境资源研究院沙漠与沙漠化重点实验室干旱区盐渍化研究站,兰州730000 [2]中国科学院大学,北京100049

出　　处：《生物技术通报》2020年第9期75-87,共13页Biotechnology Bulletin

基　　金：国家重点研发计划项目(2017YFE0119100);中科院对外合作重点项目(131B62KYSB20170031)。

摘　　要：土壤盐渍化是全球性土地荒漠化的主要表现形式之一。在自然和人类活动的不断干扰下,受盐渍化影响的土地面积不断增加,严重制约着农业发展,威胁着生态安全。植物根际促生菌(PGPR)是指生活在根际土壤或依附于植物根系的有益细菌,它既可提高植物的耐盐性使其适应盐渍生境,又可利用其与宿主植物间的相互作用来改良盐渍化土地。阐述了盐胁迫下PGPR对植物生长的促进作用,并分析了PGPR诱导植物耐盐性的相关机制,最后基于以上讨论对今后的发展趋势进行了展望,旨在服务于盐渍土的改良和盐渍生境的生态恢复与重建。Soil salinization is one of the main manifestations of global land desertification.Since the constant interference of natural factors and anthropogenic activities,the land area affected by salinization is increasing year by year,and this seriously restricts agricultural development and threatens ecological security.Plant growth-promoting rhizobacteria(PGPR),a group of bacteria that reside in the vicinity of rhizosphere or attached to roots,could not only improve the salt tolerance of plants to adapt to saline habitats,but also cooperate with host plants to remediate saline land.This review expounds both the growth promotion effects of PGPR on host plant under salt stress and the relevant mechanisms of PGPR to induce salt tolerance of host plants,and then gives an outlook for the future development trend based on the above discussion,aiming to serve the improvement of saline soil and the ecological restoration and reconstruction in saline habitat.

关 键 词：盐胁迫 植物根际促生菌 植物促生 耐盐机制 盐渍土改良 

分 类 号：S156.4[农业科学—土壤学]