TABLE 2.
pH ranges for growth and Mn oxidation by MOB isolatesa
| Strain | pH of isolation | pH range toleratedb |
||||
|---|---|---|---|---|---|---|
| 5.0 | 5.5 | 6.0 | 7.0 | 8.0 | ||
| AB_7 | 7.0 | −/LBB− | −/LBB− | −/LBB− | +/LBB+ | −/LBB− |
| AB_11 | 7.0 | −/LBB− | −/LBB− | −/LBB− | +/LBB+ | +/LBB− |
| AB_9 | 7.0 | −/LBB− | −/LBB− | −/LBB− | +/LBB+ | +/LBB− |
| AB_17 | 7.0 | −/LBB− | −/LBB− | −/LBB− | +/LBB+ | −/LBB− |
| AB_13 | 7.0 | −/LBB− | −/LBB− | −/LBB− | +/LBB+ | −/LBB− |
| AB_18 | 7.0 | −/LBB− | −/LBB− | +/LBB+ | +/LBB+ | +/LBB+ |
| TB-1 | 7.0 | −/LBB− | −/LBB− | −/LBB− | +/LBB+ | −/LBB− |
| AB_8 | 7.0 | −/LBB− | −/LBB− | −/LBB− | +/LBB+ | −/LBB− |
| AB_14 | 5.5 | +/LBB+ | +/LBB+ | +/LBB− | +/LBB− | −/LBB− |
| TB-2 | 5.5 | −/LBB− | +/LBB+ | +/LBB+ | +/LBB− | −/LBB− |
a
Isolates were incubated on BM medium adjusted to different pHs; the pH levels remained stable during incubation.
b
Growth (+, colonies present after 1 month of incubation) or no growth (−, no colonies present after 1 month)/presence (LBB+) or absence (LBB−) of Mn oxides in LBB spot test.