Manganese(II)-oxidizing Bacillus spores in Guaymas Basin hydrothermal sediments and plumes

Article Abstract:

The isolation of a number of diverse spore-forming manganese(II)-oxidizing Bacillus species from Guaymas Basin, a deep-sea hydrothermal vent environment in the Gulf of California, is reported. The growth and Mn(II) oxidation properties of these Bacillus species have shown that in hydrothermal sediments they are likely present as spores that are active in oxidizing Mn(II) as it emerges from the seafloor.

Bacillus (Bacteria), Bacillus

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Coupled photochemical and enzymatic Mn(II) oxidation pathways of a planktonic Roseobacter-like bacterium

Article Abstract:

The role played by Roseobacter-like bacteria in oxidation and cycling of Mn(II) in coastal environments is examined. The results have shown that Roseobacter-like bacteria not only play a previously unrecognized role in Mn(II) oxidation and cycling in coastal surface waters but also induce a novel photooxidation pathway that provides an alternative means of Mn(II) oxidation in the photic zone.

Methods, Genetic aspects, Enzymatic analysis, Planktonic bacteria

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Uranium(VI) reduction by Anaeromyxobacter dehalogenans strain 2CP-C

Article Abstract:

Uranium(VI) reduction by Anaeromyxobacter dehalogenas strain 2CP-C is explored and characterized. The metabolic versatility has enabled the Anaeromyxobacter dehalogens as a promising model organism for studying the complex interaction of multiple electron acceptors in U(VI) reduction and immobilization.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Uranium Metal, Reprocessed Activated Uranium, Microbial metabolism, Uranium

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