Desulfobacter
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| Widdel 1981 |
Desulfobacter is a genus of bacteria. Desulfobacter is one of the sulfate-reducing bacteria; the reduction of sulfur compounds generates energy, which is then converted into further metabolism. One also speaks of desulfurication or sulfate respiration.
features
The cells are rod-shaped with rounded ends, slightly curved or vibrion-shaped. If they are mobile, it is through a single, polar flagellum . Spores are not formed. The grief test turns out negative. Desulfobacter can only live in the absence of oxygen ( anaerobically ). Species of Desulfobacter are mostly found in the sea, some also live in anoxic fresh water .
metabolism
As mentioned above, Desulfobacter uses sulfate respiration. Acetate serves as an electron donor within the respiratory chain in energy metabolism. Sulfur compounds such as B. sulfate , sulfite or thiosulfate serve as electron acceptors . Here, the oxidation of acetate brings electrons into an electron transport chain . A proton motor force is generated, which ultimately leads to the formation of ATP. As an electron acceptor, the sulfur compound takes up the electrons again and is reduced to hydrogen sulfide (H 2 S). Acetate also serves as a carbon source. Many species can nitrogen fixing ( nitrogen fixation ).
Systematics
Desulfobacter belongs to the Desulfobacteraceae family . The following types are known:
- Desulfobacter curvatus Widdel 1988
- Desulfobacter giganteus Esnault et al. 1988
- Desulfobacter halotolerans Brandt and Ingvorsen 1998
- Desulfobacter hydrogenophilus Widdel 1988
- Desulfobacter latus Widdel 1988
- Desulfobacter postgatei Widdel 1981
- Desulfobacter vibrioformis Lien and Beeder 1997
Individual evidence
- ↑ a b George M. Garrity, Don J. Brenner, Noel R. Krieg, James T. Staley (Eds.): Bergey's manual of systematic bacteriology. Vol. 2: The Proteobacteria Part C: The Alpha-, Beta-, Delta-, and Epsilonproteabacteria. 2nd Edition. Springer, New York 2005, ISBN 978-0-387-24145-6
- ↑ JP Euzéby: List of Prokaryotic Names with Standing in Nomenclature Desulfobacter ( Memento of the original of June 27, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (As of June 2, 2015)
literature
- Michael T. Madigan, John M. Martinko, Jack Parker: Brock - Microbiology. 11th updated edition. Pearson Studies, Munich 2009, ISBN 978-3-8273-7358-8 .