Indirect oxidation of Co(II) in the presence of the marine Mn(II)-oxidizing bacterium Bacillus sp. strain SG-1

Article Abstract:

The oxidation of Co(II) by the spore-forming marine Mn(II)-oxidizing bacterium sp. strain SG-1 is examined, which has enzymatically catalyzed the formation of reactive nanoparticulate Mn(IV) oxides. The results have shown that the mechanism by which SG-1 has oxidized Co(II) is by the production of the reactive nanoparticulate Mn oxide.

Cobalt, Oxidation-reduction reaction, Oxidation-reduction reactions, Catalysis, Chemical properties, Nanoparticles

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Cr(VI) reduction by sulfidogenic and nonsulfidogenic microbial consortia

Article Abstract:

Results reveal that both sulfidogenic and nonsulfidogenic bacteria completely reduce chromium(VI), but their growth is inhibited by the metal. Data indicate that sulfate-reducing bacteria are sensitive to chromium toxicity relative to other bacteria forming the microbial consortia.

United States, Microbial metabolism, Sulfur bacteria, Sulphur bacteria, Toxicity

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Vibrio harveyi nitroreductase is also a chromate reductase

Article Abstract:

The authors describe the study of Vibrio harveyi and Escherichia coli nitroreductases. They report that these nitroreductases are also efficient in chromate reduction.

South Korea, Environmental aspects, Genetic aspects, Microbiology, Microbial populations, Vibrio, Nitrogen-fixing microorganisms, Microbial ecology

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