Enhancing Zinc Bioavailability in Rice Using the Novel Synthetic Siderophore Ligand Proline-2'-Deoxymugineic Acid (PDMA): Critical Insights from Metal Binding Studies and Geochemical Speciation Modeling.

ABSTRACT: Bioavailable ligands that bind metals mediate their uptake in plants, leading to the study of artificial ligands as potential fertilizers. Proline-2'-deoxymugineic acid (PDMA) has shown a high affinity for Fe^III, enhancing iron uptake in rice and suggesting that it could be used for improving zinc uptake. This work studied chemical solution parameters, i.e., redox potential, ion strength, pH, and ligand/metal concentrations controlling Zn^II-PDMA complex formation in rice-producing soils using geochemical speciation modeling. We show that PDMA is generally selective for Zn^II in reducing, saline, and alkaline soil solutions. Comparison with a recent micronutrient uptake study in rice suggests that free PDMA should be added in reducing conditions to avoid comp

SUBMITTER: Rocco C 

PROVIDER: S-EPMC11987015 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature