Phosphate-Solubilising Bacteria: Microbial Catalysts for Sustainable Agronomy and Geobiotechnological Applications
Department of Microbiology, Monark University, Ahmedabad-382330, India
*Corresponding author
Abstract:
Phosphate-solubilising microorganisms (PSMs), a phylogenetically heterogeneous assemblage of bacteria and fungi, occupy a singular functional niche at the intersection of microbial ecology and biotechnological innovation. Through acidification, chelation, and enzymatic hydrolysis, taxa including Bacillus, Pseudomonas, and Rhizobium liberate orthophosphate from recalcitrant mineral and organic pools, rendering it accessible to plant roots. This capacity sustains not only crop nutrition and yield but also fortifies plant tolerance against salinity and drought while mitigating metal mobility in polluted matrices. Yet for all their laboratory promise, PSMs have not fully crossed the threshold into mainstream agricultural practice. The impediments are human in scale: costly production pipelines, formulations that fail to preserve viability, and the ecological reality that foreign microbes often struggle to find their place in already settled soil communities. Encouragingly, the field is moving beyond proof-of-concept. Cheaper fermentation substrates, protective seed coatings, and regionally adapted isolates are narrowing the gap between potential and performance. Meanwhile, metagenomics tools are unveiling a hidden world of phosphate-solubilising diversity, and synthetic biology offers the prospect of purpose-built strains equipped for both catalytic efficiency and rhizosphere competence. As PSMs begin to find roles beyond the field of degrading organophosphate pollutants or recovering phosphorus from eutrophic waters, they increasingly embody a broader ambition: to rewire nutrient economies along more circular, less extractive lines.
Keywords: Phosphate-solubilising microorganisms, Biofertilizer, Sustainable agriculture, Microbial ecology, Metagenomics, Synthetic biology, Bioremediation, Nutrient cycling.
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How to cite this article:
Devanshi Patel and Nilofar Bhatti. 2026. Phosphate-Solubilising Bacteria: Microbial Catalysts for Sustainable Agronomy and Geobiotechnological Applications.
Int.J.Curr.Microbiol.App.Sci. 15(2): 189-198. doi:
https://doi.org/10.20546/ijcmas.2026.1502.019
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