Solubilization of Iron-Containing Minerals by Soil Microorganisms

AUTOR(ES)

Arrieta, Luis

RESUMO

Eighty-eight strains of microorganisms were isolated from soils collected in northern and southern Chile, and 10 fungi which showed the highest solubilizing action upon the iron in granodiorite were then selected. These fungi were incubated with the following iron-containing minerals: augite, hornblende, biotite, magnetite, hematite, and the igneous rock granodiorite. The solubility of iron in these minerals depended on their nature, crystalline structure, the concentration of metabolic products, or all three. Complex formation could be the mechanism involved, as a strong cation-exchange resin was not able to extract Fe from culture solutions. This conclusion is also confirmed by the RF values obtained by thin-layer chromatography of iron-containing culture solutions.

Documentos Relacionados

• Reduction of Soluble Iron and Reductive Dissolution of Ferric Iron-Containing Minerals by Moderately Thermophilic Iron-Oxidizing Bacteria
• Derepression of the Azotobacter vinelandii siderophore system, using iron-containing minerals to limit iron repletion.
• Iron-Containing Frit as a Nutriculture Medium
• Iron-containing corneal rust rings treated with desferrioxamine.
• Distribution of Iron-Containing Superoxide Dismutase in Vascular Plants 12