Soil salinity has emerged as a great threat to the agricultural ecosystems throughout the globe. Many continents of the globe are affected by salinity and crop productivity is severely affected. Anthropogenic activities leading to the degradation of agricultural land have also accelerated the rate of salinization in arid and semi-arid regions. Several approaches are being evaluated for remediating saline soil and restoring their productivity. Amongst these, utilization of plant growth promoting bacteria (PGPB) has been marked as a promising tool. This greener approach is suitable for simultaneous reclamation of saline soil and improving the productivity. Salt-tolerant PGPB utilize numerous mechanisms that affect physiological, biochemical, and molecular responses in plants to cope with salt stress. These mechanisms include osmotic adjustment by ion homeostasis and osmolyte accumulation, protection from free radicals by the formation of free radicals scavenging enzymes, oxidative stress responses and maintenance of growth parameters by the synthesis of phytohormones and other metabolites. As salt-tolerant PGPB elicit better plant survival under salinity, they are the potential candidates for enhancing agricultural productivity. The present review focuses on the various mechanisms used by PGPB to improve plant health under salinity. Recent developments and prospects to facilitate better understanding on the functioning of PGPB for ameliorating salt stress in plants are emphasized.

土壤盐分已成为对全球农业生态系统的巨大威胁。全球许多大陆都受到盐度的影响，作物生产力受到严重影响。导致农业用地退化的人为活动也加速了干旱和半干旱地区的盐渍化速度。正在评估几种修复盐渍土壤和恢复其生产力的方法。其中，植物生长促进细菌（PGPB）的利用已被标记为一种有前途的工具。这种更环保的方法适用于同时开垦盐渍土和提高生产力。耐盐 PGPB 利用多种影响植物生理、生化和分子反应的机制来应对盐胁迫。这些机制包括通过离子稳态和渗透物积累来调节渗透压、通过形成自由基清除酶来防止自由基、氧化应激反应以及通过合成植物激素和其他代谢物来维持生长参数。由于耐盐 PGPB 在盐度下可引起更好的植物存活，因此它们是提高农业生产力的潜在候选者。本综述重点关注 PGPB 用于改善盐度下植物健康的各种机制。强调了促进更好地理解 PGPB 在改善植物盐胁迫方面的功能的最新发展和前景。通过合成植物激素和其他代谢物来调节氧化应激反应和维持生长参数。由于耐盐 PGPB 在盐度下可引起更好的植物存活，因此它们是提高农业生产力的潜在候选者。本综述重点关注 PGPB 用于改善盐度下植物健康的各种机制。强调了促进更好地理解 PGPB 在改善植物盐胁迫方面的功能的最新发展和前景。通过合成植物激素和其他代谢物来调节氧化应激反应和维持生长参数。由于耐盐 PGPB 在盐度下可引起更好的植物存活，因此它们是提高农业生产力的潜在候选者。本综述重点关注 PGPB 用于改善盐度下植物健康的各种机制。强调了促进更好地理解 PGPB 在改善植物盐胁迫方面的功能的最新发展和前景。