doi: 10.1126/science.240.4857.1319.
Bacterial manganese reduction and growth with manganese oxide as the sole electron acceptor
- PMID: 17815852
- DOI: 10.1126/science.240.4857.1319
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Bacterial manganese reduction and growth with manganese oxide as the sole electron acceptor
Science.
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Abstract
Microbes that couple growth to the reduction of manganese could play an important role in the biogeochemistry of certain anaerobic environments. Such a bacterium, Alteromonas putrefaciens MR-1, couples its growth to the reduction of manganese oxides only under anaerobic conditions. The characteristics of this reduction are consistent with a biological, and not an indirect chemical, reduction of manganese, which suggest that this bacterium uses manganic oxide as a terminal electron acceptor. It can also utilize a large number of other compounds as terminal electron acceptors; this versatility could provide a distinct advantage in environments where electron-acceptor concentrations may vary.
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