TABLE 3.
Closest relatives of archaeal phylotypes from O2 and O1 16S rDNA libraries
| Division (% representation) | Type sequence | No. of RFLP types | No. of clones | Closest cultivated species | Source | % Sequence similarity |
|---|---|---|---|---|---|---|
| Methanomicrobiales (96%) | O2 3C7a | 4 | 145 | Methanoplanus petrolearius | Oil | 95.7–96.1 |
| Methanomicrobium mobile | Cow rumen | 93.9–94.4 | ||||
| Methanosarcinales (6%) | O2 3F7a | 1 | 7 | Methanosarcina thermophila | Sewage | 87.6 |
| Thermococcales (1.3%) | O2 3C2a | 1 | 2 | Thermococcus litoralis | Oil | 99.1 |
| Thermococcales (8.8%) | O1 8A6b | 5 | 14 | Thermococcus litoralis | Oil | 99.4–99.9 |
a
16S rRNA E. coli numbering (20 to 958).
b
16S rRNA E. coli numbering (519 to 1,390).