Desulfurellales Kuever et al. 2006
General information
Description and emendation
Cells are rod-shaped and usually motile. Strictly anaerobic chemoorganotrophs or chemolithoautotrophs with a respiratory type of metabolism; in addition, limited fermentative capacities may occur in some members. The common electron acceptor is elemental sulfur (or polysulfide), which is reduced to sulfide; thiosulfate may be used. Sulfate does not serve as electron acceptor. Simple organic compounds serve as electron donors and carbon sources that are completely oxidized to CO2. So far as known, the mechanism of terminal oxidation is the citric acid cycle. All members are moderate thermophiles with temperature optima between 50 and 60°C. A striking biochemical feature in species investigated so far is the absence of cytochromes, despite a respiratory metabolism. Menaquinones are present. Species have been isolated from geothermally heated, sulfidic freshwater and marine environments. The order currently contains only one family, Desulfurellaceae.
Subdivision(s)
MID | Name | Rank | Taxon ID |
---|---|---|---|
M0225040501 | Desulfurellaceae | Family | 117942 |