TABLE 1.
Metabolic differences among Hydrogenobaculum-like isolates
| 16S phylotype | No. of isolates | No. of isolates capable of using indicated electron donor:
|
No. of microaerobic isolatesa | No. of aerobic isolatesa | ||
|---|---|---|---|---|---|---|
| H2S | H2 | H2S/H2 | ||||
| I | 9 | 3 | 2 | 4 | 0 | 9 |
| II | 18 | 15 | 0 | 3 | 6 | 12 |
| III | 3 | 2 | 0 | 1 | 0 | 3 |
| Total | 30 | 20 | 2 | 8 | 6 | 24 |
a
Isolates listed as microaerobic were incapable of growth with a headspace O2 content of >2%, while aerobic isolates exhibited the best growth at a headspace O2 content of 5.5% and are capable of growth with >10% O2.