Phytohormones are chemicals released by plants for several mechanism which includes growth and development such as cell divisions, cell elongation and tissue differentiation, it also helps in stress tolerance and senescence. Major phytohormone groups include auxin, cytokinin, gibberellin, ethylene, abscisic acid, brassinosteroids and jasmonates. Phytohormones are naturally produced in low concentration. Certain naturally available soil microorganisms produce phytohormones, the current approach of plant growth regulators to crops improve yield by dual activity and genetic modifications is highly beneficial. The pilot study on metagenomic analysis on commercially important crops helped us to expand the study on identifying the nitrogen fixing bacteria also promoting phytohormone production. Expected outcome: Agrobacterium, Azospirillum, Bacillus, Enterobacter, Pseudomonas, Proteus, Klebsiella and Mycorrhizal are microorganisms that play dual activity. All these growth-promoting bacteria are proven to be involved in indole-3-acetic acid pathways which help in the biosynthesis of auxin and cytokinin. The dual benefit of the plant-growth promoting bacteria is that it can act as a diazotroph which helps in nitrogen fixation as well as the biosynthesis of phytohormones. Several microorganisms play crucial role in plants as nitrogen-fixing bacteria, phytohormone production, etc. they play multiple function in plant growth and development. These are essential microbes in application field of agriculture and biotechnology.