Desulfovibrionales Kuever et al. 2006
General information
Description and emendation
Cells are curved or rod shaped and often motile. Strictly anaerobic chemoorganotrophic or chemolithoheterotrophic (H2, acetate, sulfate) growth by respiratory metabolism; in addition, fermentative abilities are found in several members. The common electron acceptor is sulfate, which is reduced to sulfide. Sulfite or thiosulfate may be used in addition; some members may also reduce elemental sulfur (or polysulfide) to sulfide or nitrate to ammonia. Members of the genera Bilophila and Lawsonia are unable to use sulfate as an electron acceptor. Simple organic compounds serve as electron donors and carbon sources. Oxidation is usually incomplete, leading to formation of acetate; the capacity for complete oxidation has been observed so far only in Desulfothermus naphthae. Growth by disproportionation of sulfur, thiosulfate, and sulfite may occur. Most members are mesophilic; in addition, some moderate thermophiles with temperature optima between 50 and 60°C have been isolated. Cells contain various cytochromes, other redox proteins, and menaquinones. Mesophilic species have been isolated from almost every type of aquatic environment, including marine habitats, freshwater habitats, technical water systems, and digestive tracts; few clinical isolates without obvious pathogenic properties have been reported. Thermophilic members have been isolated from geothermally heated marine environments. Whereas most members grow preferentially under neutral conditions, some alkaliphilic isolates are known. The order comprises the families Desulfovibrionaceae, Desulfomicrobiaceae, Desulfohalobiaceae, and Desulfonatronumaceae.
Subdivision(s)
MID | Name | Rank | Taxon ID |
---|---|---|---|
MSG086760 | 'Desulfobacterota_A bacterium' | Species | |
M0225040401 | Desulfohalobiaceae | Family | 213117 |
M0225040402 | Desulfomicrobiaceae | Family | 213116 |
M0225040403 | Desulfonatronaceae | Family | 224380 |
M0225040404 | Desulfovibrionaceae | Family | 194924 |