Table 4.
Groups of SRB based on rRNA sequences with their representatives and important molecular and biochemical characteristics (data taken from Castro et al. and Daly et al. [81,82]).
| Group | Genus | G+C % | Desulfoviridin | Cytochromes | Acetate Oxidation |
|---|---|---|---|---|---|
| Gram-positive sporulating | |||||
| 1 | Desulfotomaculum | 48–52 | – | b, c | complete/partial |
| Gram-negative mesophilic | |||||
| 2 | Desulfobulbus | 59–60 | – | b, c, c3 | partial |
| 3 | Desulfobacterium | 41–52 | – | b, c | complete |
| 4 | Desulfobacter | 44–46 | – | no data | complete |
| 5 | Desulfococcus | 46–57 | +/– | b, c | complete |
| Desulfosarcina | 51 | – | b, c | complete | |
| 6 | Desulfovibrio | 49–66 | +/– | c3, b, c | partial |
| Desulfomicrobium | 52–67 | – | b, c | partial | |
| Thermophilic bacterial | |||||
| Thermodesulfobacterium | 30–38 | – | c3, c | partial | |
| Thermophilic archaeal | |||||
| Archaeoglobus | 41–46 | – | no data | partial | |