Organic acid-mediated phosphorus mobilization in black soils: differential effects of maize root exudates on alfisols and mollisols in Northeast China.

ABSTRACT: Soil phosphorus exists in various forms, but only minimal soluble phosphorus is bioavailable. While phosphate fertilizers address deficiency, low efficiency leads to insoluble phosphate accumulation, wasting resources. Enhancing phosphorus availability by converting non-available forms is a critical research priority. Under phosphorus-deficient conditions, plants enhance soil phosphorus availability by secreting organic acids. This study aims to explore phosphorus activation in Alfisol and Mollisol soils through maize root-secreted organic acids. Semi-hydroponic maize cultivation under low/medium/high phosphorus levels and sterilized soil (Alfisol/Mollisol) incubation with root-secreted organic acids (0.5-2%). Exudates analyzed via UHPLC-MS/MS; soil phosphorus dynamics monitored over 60 da

SUBMITTER: Zhao W 

PROVIDER: S-EPMC12459762 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature