Desulfuromonadaceae
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| corrig. Kuever et al. 2006 |
The Desulfuromonadaceae are a family of bacteria. They use elemental sulfur (S 0 ) and gain energy through reduction , which is converted into the further metabolism (sulfur breathers).
properties
The cells of the Desulfuromonadaceae are rod-shaped or curved. All species are anaerobic and do not tolerate oxygen . Most species are motile through a flagellum . Desulfuromonadaceae occur in brackish water, fresh water and in the sea and belong to the Proteobacteria , as typical for this group, the Gram test is negative.
metabolism
All types of Desulfuromonadaceae belong to the group of sulfur breathers who gain energy by reducing sulfur. Simple organic compounds such as acetate serve as electron donors in energy metabolism and as sources of building materials. Elemental sulfur serves as an electron acceptor . The oxidation of the organic compounds brings electrons into an electron transport chain . A proton motor force is generated, which ultimately leads to the formation of adenosine triphosphate (ATP). As an electron acceptor, sulfur takes up the electrons again and is reduced to hydrogen sulfide (H 2 S). Fumarate , pyruvate and malate are other organic substances that can be used as electron donors for various types. Due to the reduction of sulfur to hydrogen sulfide, the bacteria are important in the earth's sulfur cycle .
Systematics
The Desulfuromonadaceae are assigned to the order Desulfuromonadales and contain the following genera :
- Desulfuromonas Pfennig & Biebl 1977
- Desulfuromusa Liesack and Finster 1994
- Malonomonas Dehning and Schink 1990
- Pelobacter Schink and Pfennig 1983
Individual evidence
- ↑ George M. Garrity : Bergey's Manual of Systematic Bacteriology . 2nd edition, Volume 2: The Proteobacteria. Part C: The Alpha-, Beta-, Delta-, and Epsilonproteabacteria. Springer, New York 2005, ISBN 0-387-24145-0 .
- ↑ Systematics according to JP Euzéby: List of Prokaryotic Names with Standing in Nomenclature - Desulfuromonadaceae ( Memento of the original from March 3, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (As of June 1, 2015)
literature
- Michael T. Madigan, John M. Martinko, Jack Parker: Brock - Microbiology . 11th edition, Pearson Studium, Munich 2006, ISBN 3-8274-0566-1 .
- George M. Garrity : Bergey's Manual of Systematic Bacteriology . 2nd edition, Volume 2: The Proteobacteria. Part C: The Alpha-, Beta-, Delta-, and Epsilonproteabacteria. Springer, New York 2005, ISBN 0-387-24145-0 .