| Cross Index | Desulfobulbus |
| SuperSet | Prokaryote, Eubacteria Dissimilatory Sulfate or Sulfur-Reducing Bacteria |
| Compare | Desulferella acetivorans ,Desulfobacter Desulfobacterium, Desulfobulbus, Desulfococcus Desulfomicrobium Desulfomonas pigra reclassified as DesulfovibrioDesulfomonile tiedjei , Desulfonema ,Desulfosarcina variabilis Desulfotomaculum, Desulfovibrio Desulfuromonas acetoxidans Thermodesulfobacterium |
| Contrast | Archaea |
| Subset |
| Morphology | Desulfobulbus |
| CELLULAR |
| Staining | Gram-negative |
| Morphology | Ellipsoidal cells, 1.0-1.3 um in diameter and 1.5-2.0 um in length, often lemon or onion shaped with pointed ends. Occur singly, in pairs or in chains. |
| Motility | Many strains are motile by a single polar flagellum. |
| Specialized structures | Spore formation is not observed. |
| Division |
| COLONIAL |
| Solid surface | Colonies in anaerobic agar media are whitish to greyish and smooth. |
| Liquid |
| Growth Parameters | Desulfobulbus |
| PHYSIOLOGICAL |
| Tropism | Chemoorganotrophic, using propionate, lactate, pyruvate, ethanol or propanol as carbon sources and also as electron donors for anaerobic respiration; these compounds are oxidized incompletely to acetate |
| Oxygen | Strictly anaerobic, having both a respiratory and a fermentative type of metabolism |
| pH | |
| Temperature | Optimum growth temperature, 28-39oC. |
| Requirements | Media containing a reductant and vitamins are necessary for growth. Marine strains require higher NaCl and MgCl2 concentrations than do fresh-water strains |
| Products | Sulfate and other oxidized sulfur compounds serve as terminal electron acceptors and are reduced to H2S. In the absence of an external electron acceptor, growth occurs by fermentation of pyruvate or lactate to propionate and acetate. |
| Enzymes | |
| Unique features | . |
| ENVIRONMENTAL |
| Habitat | Occur in the anaerobic parts of freshwater, brackish water and marine habitats; also isolated from rumen contents, animal dungand sewage sludge. |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Desulfobulbus |
| G+C Mol % | 59.9 (Tm) |
| for type strain |
| Reference | Desulfobulbus |
| First citation | Widdel, F. 1981. Anaerober Abbau von Fettsauren und Benzoesaure durch neu Isolierte Arten Sulfat-reduzierender Bakterien. Dissertation. Georg-August-Univeritat zu Gottingen. Lindhorst/Schumburg-Lippe, Gottingen |
| The Prokaryotes | p |
| Bergey's Systematatic | p 676 F. Widdel and N. Pfennig |
| Bergey's Determinative | p 336 |
| References |