TABLE 1.
Major characteristics of strains CVO and FWKO B isolated from oil field brine
| Parameter | Valuea
|
|
|---|---|---|
| CVO | FWKO B | |
| Morphology | Slightly curved rods | Slightly curved rods |
| Width (μm) | 0.4 | 0.4 |
| Length (μm) | 0.6–0.8 | 1.0–2.0 |
| Spores | − | − |
| Motility | −b | + |
| Gram stain | − | − |
| Blood agar | − | − |
| Oxidase test | + | − |
| H2O2 decomposition | − | − |
| Aerobic growth | ||
| Acetate, succinate, lactate, fumarate, malate, formate, pyruvate, glucose, glycerol | − | − |
| S2O32− | − | − |
| S0 | − | NDd |
| Microaerophilic growth (1% O2) | ||
| HS− | + | + |
| S0 | + | ND |
| H2 | ND | + |
| Anaerobic growth on NO3− by oxidation of: | ||
| HS− | + | + |
| S2O32− | − | − |
| S0 | + | − |
| H2 | − | + |
| Formate | − | + |
| Acetate, pyruvate, succinate, fumarate, lactate, propionate, glucose | − | − |
| Anaerobic growth on NO223 by oxidation of: | ||
| HS− | + | − |
| S0 | + | − |
| H2 | ND | − |
| Anaerobic growth on N2O (2%) by oxidation of HS− | +c | − |
| Anaerobic growth on H2 by reduction of S0 | − | + |
| Anaerobic growth on acetate by reduction of S0 | ND | − |
| Growth by fermentation of pyruvate, succinate, lactate, fumarate, malate, aspartate | − | − |
a
+, positive; −, negative.
b
Nonmotile or only weakly motile.
c
Only a fivefold increase in cell numbers was observed after 5 days of incubation.
d
ND, not determined.