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Abstract：
To date, soil salinity becomes a huge obstacle for food production worldwide since salt stress is one of the major factors limiting agricultural productivity. It is estimated that a significant loss of crops (20-50%) would be due to drought and salinity. To embark upon this harsh situation, numerous strategies such as plant breeding, plant genetic engineering, and a large variety of agricultural practices including the applications of plant growth-promoting rhizobacteria (PGPR) and seed biopriming technique have been developed to improve plant defense system against salt stress, resulting in higher crop yields to meet human\'s increasing food demand in the future. In the present review, we update and discuss the advantageous roles of beneficial PGPR as green bioinoculants in mitigating the burden of high saline conditions on morphological parameters and on physio-biochemical attributes of plant crops via diverse mechanisms. In addition, the applications of PGPR as a useful tool in seed biopriming technique are also updated and discussed since this approach exhibits promising potentials in improving seed vigor, rapid seed germination, and seedling growth uniformity. Furthermore, the controversial findings regarding the fluctuation of antioxidants and osmolytes in PGPR-treated plants are also pointed out and discussed.
摘要：
迄今为止,由于盐胁迫是限制农业生产力的主要因素之一，土壤盐分成为全球粮食生产的巨大障碍。据估计，干旱和盐分将导致农作物的重大损失（20-50％）。要面对这种严酷的局面，许多策略，如植物育种，植物基因工程,和各种各样的农业实践，包括植物生长促进根际细菌（PGPR）和种子生物技术的应用已被开发出来，以改善植物对盐胁迫的防御系统，从而提高作物产量，以满足人类未来日益增长的粮食需求。在本次审查中，我们更新并讨论了有益的PGPR作为绿色生物接种剂在通过多种机制减轻高盐碱条件对植物作物的形态参数和生理生化属性的负担方面的有利作用。此外,PGPR作为一种有用的工具在种子生物分界技术的应用也被更新和讨论，因为这种方法在提高种子活力方面表现出很有希望的潜力。种子快速发芽，和幼苗生长均匀性。此外，还指出并讨论了有关PGPR处理过的植物中抗氧化剂和渗透压物质波动的有争议的发现。
