Abstract

The soil and its microenvironment are extremely important, that play major role in plant growth and sustainable agriculture focusing on the production of long-term crops and livestock while having minimal effects on the environment. For sustainable agriculture, healthy soil which leads to quality crop produce is most important which can fulfill the nutritional requirements of living organisms. An increasing interest has emerged with respect to the soil health due to the importance of soil microflora as an active and priceless natural resource with diverse species of useful microorganisms. Diverse types of advantageous microorganisms are present in soil, which are responsible for decomposition of organic matter; toxin removal; and the cycling of carbon, nitrogen, phosphorus, and sulfur. In addition, microorganisms play key role in suppressing soilborne plant diseases, promoting plant growth, and changes in vegetation. Plant growth promoting rhizobacteria (PGPR) are considered to be best studied group of microbes for growth promotion. There are two regions in the soil i.e., rhizosphere and rhizoplane which are extensively colonized by PGPR than any other region. Wide variety of PGPR and its allies with diverse role and usages for sustainable agriculture are still a prime topic of interest among researchers. The environmental factors and soil physioco-chemical properties also plays a vital role in the efficiency and performance of PGPR. However, variations in the performace of PGPR can be addressed through ecological and functional biological approaches. In this review article, recent advances in the mechanism of rhizobacteria for plant growth promoting traits have been discussed.

摘要

土壤及其微环境极其重要，它们在植物生长和可持续农业中发挥着重要作用，专注于长期作物和牲畜的生产，同时对环境的影响最小。对于可持续农业而言，健康的土壤可以生产出优质的作物，这对于满足生物体的营养需求是最重要的。由于土壤微生物群落作为具有多种有用微生物的活性和无价自然资源的重要性，人们对土壤健康越来越感兴趣。土壤中存在多种有益微生物，它们负责有机物的分解；去除毒素；以及碳、氮、磷和硫的循环。此外，微生物在抑制土传植物病害、促进植物生长和植被变化方面发挥着关键作用。植物生长促进根际细菌 (PGPR) 被认为是研究最好的促进生长的微生物群。土壤中有两个区域，即根际和根际，PGPR 比任何其他区域更广泛地定植。各种各样的 PGPR 及其在可持续农业中具有不同作用和用途的盟友仍然是研究人员感兴趣的主要话题。环境因素和土壤理化性质对 PGPR 的效率和性能也起着至关重要的作用。然而，PGPR 性能的变化可以通过生态和功能生物学方法来解决。在这篇评论文章中，