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

doi:10.13560/j.cnki.biotech.bull.1985.2020-0511

Abstract

Abstract: 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.

Key words: salt stress, plant growth-promoting rhizobacteria, plant growth promotion, salt-tolerance mechanism, saline soil remediation

PAN Jing, HUANG Cui-hua, PENG Fei, YOU Quan-gang, LIU Fei-yao, XUE Xian. Mechanisms of Salt Tolerance and Growth Promotion in Plant Induced by Plant Growth-Promoting Rhizobacteria[J]. Biotechnology Bulletin, 2020, 36(9): 75-87.

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