Abstract
Ferrous ion oxidation byThiobacillus ferrooxidans was completely inhibited by 10 mM each of thiosulfate, sulfite, metabisulfite, bisulfite, and tetrathionate. The inhibition was enhanced in a low pH medium (pH 1.5 versus pH 2.5). Oxygen uptake measurements with Fe2+ as the electron donor confirmed the toxicity of thiosulfate, but also indicated its dependency on the concentration of Fe2+. Cytochrome spectra of intact cells ofT. ferrooxidans showed that metabisulfite, and thiosulfate to a lesser extent, directly reduced electron transport components, in contrast to no direct reduction of cytochromes by tetrathionate and sulfite.
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Hurtado, J.E., Tsai, YL. & Tuovinen, O.H. Effect of oxyanions of sulfur onThiobacillus ferrooxidans: Ferrous ion oxidation, oxygen uptake, and cytochrome reduction. Current Microbiology 15, 111–113 (1987). https://doi.org/10.1007/BF01589372
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DOI: https://doi.org/10.1007/BF01589372