Phosphate-Solubilizing Microbes in Agroecosystems: From Functional Mechanisms to Potential Field Application

Dear Colleagues,

Phosphate-solubilizing microorganisms (PSMs) are key contributors to improving phosphorus (P) availability in agricultural soils, particularly where P bioavailability is naturally low. Global agriculture faces widespread P deficiency due to multiple factors that limit plant uptake and constrain productivity. Extensive research has revealed the taxonomic and functional diversity of PSMs and their capacity to mobilize organic and inorganic P through mechanisms involving organic acids, phosphatases, siderophores, and exopolysaccharides. Growing concerns about declining yields, the sustainability of mineral P fertilizers, and environmental impacts have strengthened interest in PSM-based solutions. This Special Issue focuses on advances in understanding PSM physiology, plant–microbe interactions, field performance, inoculant development, and microbial contributions to crop adaptation under abiotic stress. Cutting-edge research highlights genomic and metabolic pathways of P solubilization, multi-omics insights into rhizosphere P cycling, and improved microbial formulations. We invite contributions addressing P solubilization mechanisms, PSM diversity, plant–microbe interactions, multi-omics studies, inoculant development, synergistic microbial combinations, and stress-related impacts on PSM functionality.

Dr. Liliana Mercedes Ludueña
Dr. María Soledad Anzuay
Dr. Tania Taurian
Guest Editors

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