It has been established that Phosphorus, a macronutrient necessary for all life on Earth, is a critical nutrient element that limits plant development and productivity. Chemical phosphate fertilizer has historically been used to address the P deficiency issue in agricultural productivity. Still, its use has been constrained by the non-renewability of raw materials and the unfavorable impact on the ecological health of the environment. Phosphate-solubilizing bacteria (PSB) belong to a group of microorganisms that have the capabilities to transform insoluble Phosphate into soluble Phosphate, making it readily accessible to plants are considered to be an important key figure in mineralization, making its favorable use as biofertilizers in soil sustainability. PSB can solubilize Phosphorus by secreting low-molecular-weight acids like lactic, formic, malonic, gluconic, and citric, which can dissolve the mineral form of Phosphorus. PSB has been shown to increase crop yields and improve soil structure. Their effectiveness has multiple roles in increasing soil sustainability, the biological leaching of heavy metals, and enhancing Phosphorus. The PSB can be removed from various settings, including soil, water, and plant roots. Pseudomonas, Rhizobium, and Bacillus are a few typical PSB examples. Furthermore, the incidence of heavy metals in agricultural soils performs functional importance in the phosphorus-solubilizing bacteria biological remediation process. PSB are crucial bacteria that may solubilize Phosphorus and increase soil fertility. One milligram/kilogram of phosphorus solubilization is often found in soil. Their usage as biofertilizers has the potential to increase crop yields while lowering agriculture's negative environmental effects. This review goes into great detail about the numerous roles that PSB has played.

Key words- Biofertilizers; Soil Fertility; Soil microbes; Organic Acids, P solubilization, P Immobilization, Plant-Growth Promoters, Phosphate Solubilizing Bacteria