ABSTRACT
The ecosystem that makes up soil is crucial to the availability of plant nutrients and is home to a wide variety of helpful
microorganisms that can be vital to improving soil fertility. Application of compost, vermicompost, and manures are among
the soil fertility management techniques for increasing plant nutrients and agricultural productivity. One of the latest promising
solutions for addressing the agricultural issues brought on by the still-increasing need for food is the development of
phosphate-solubilizing bio-inoculants. In this context, this review will demonstrate the enormous potential of phosphatesolubilizing microorganisms (PSMs) as bio-fertilizers. In low-input agricultural systems, bio-fertilizer technologies can aid in
the effective utilization of scarce phosphorus fertilizers and ensure a livable environment. Being aware of and understanding
the procedures for isolating and characterizing phosphate-solubilizing microorganisms and the mechanisms by which they
solubilized phosphate to make it available for plant nutrition would help strengthen the use of phosphate-solubilizing bioinoculants. In addition, it is important to comprehend the numerous bio-inoculant sources employed for the initial isolation
and characterization of native phosphate solubilizers, which will be the focus of this review. This review will also give a
thorough overview of the various phosphate solubilization mechanisms and their effects on sustainable agriculture.