Agricultural sustainability rests on a foundation of microbial diversity and activity. Soil consists of rich biodiversity of microorganisms belongs to all three domains of life i.e archaea, bacteria and eukarya. The rhizosphere is the plenty of extensively colonized zone of the soil due to the availability of nutritoinal to the microorganisms. Rhizospheric zone is one of the largest ecosystems with bacterial population being pre-dominant. Bacteria in the rhizospheric region benefit the plants by stimulating their growth and productivity by diverse mechanisms including, production of plant growth regulators, siderophores, fixation of atmospheric nitrogen and solubilization of unavailable and insoluble macro and micronutrients. Plant growth promoting (PGP) rhizomicrobiomes protect the plants against the phytopathogens by producing antibiotics, extra-cellular hydrolytic enzymes, prussic acid and ammonia. Furthermore, PGP rhizomicrobiomes also helps the plants under abiotic stress of cold, salinity, drought and heavy metals by lowering the levels the inhibitory ethylene, increasing the accumulation of the osmolytes in the plants and production of the ROS scavengers. PGP rhizomicrobiomes belong to diverse phyla of domain archaea, bacteria and eukarya, in which predominant of member Actinobacteria, Bacteroidetes, Firmicutes and Proteobacteria. These beneficial rhizomicrobiomes could be used as bioinculants for agricultural sustainability
Key words: Agricultural sustainability, Biodiversity, Rhizosphere, Plant Growth, Microbiomes
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