Table 8: The Order Aquificales
|
| Species |
Location |
Morphology |
- Temperature
- (optimum, °C)
|
- pH Range
- (Optimum)
|
Metabolism |
Electron Donor |
Electron Acceptor |
Comments |
Ref. |
| Aquifex pyrophilus |
Marine sediments, Iceland |
Rod; 2-6 micrometers long; motile |
- 67-95
- (85)
|
- 5.4-7.5
- (6.8)
|
C |
H2; S2O3(2-); S(0) |
O2; NO3(1-) |
Bluish green fluorescence at 412nm |
- Huber et al. (1992)
|
| Thermocrinis ruber |
Octopus Spring, YNP |
Rods; aggregates or filaments; motile |
- 44-89
- (80)
|
- 7-8.5
- (nd)
|
C, M |
H2; S2O3(2-); S(0); formate; formamide |
O2 |
Forms pink filaments |
Huber et al. (1998) |
| Calderobacterium hydrogenophilum |
Hot spring; Kamtchatka, Russia |
Rods; 2-8 micrometers long; non-motile |
- 50-82
- (74-76)
|
- nd
- (6-7)
|
C |
H2 |
O2 |
Membrane bound hydrogenase |
Kryukov et al. (1984) |
| Hydrogenobacter acidophilus |
Hot spring; Tsumagoi Japan |
Rods; 1.3-1.8 micrometers long; motile |
- 50-70
- (65)
|
- 3-4
- (na)
|
C |
H2; S2O3(2-); S(0) |
O2 |
Reductive TCA cycle; requires S(0) or S2O3(2-) |
Shima and Suzuki (1993) |
