TABLE 4.
Levels of stress factors leading to growth arrest of selected strains isolated in this study
| Strain | pH of medium |
Concn of: |
|||||
|---|---|---|---|---|---|---|---|
| Unbuffered | Buffered | NO3− (mM) | Uranium (μM) | Nickel (μM) | Cobalt (μM) | Cadmium (μM) | |
| Alphaproteobacteria | |||||||
| OR37 | 3.5 | 4 | 250 | >200 | >500 | >50 | >50 |
| OR71 | 3.5 | 4 | 250 | >200 | >500 | >50 | 5 |
| OR114 | 3.5 | 3.5 | 250 | >200 | 500 | >50 | >50 |
| Betaproteobacteria | |||||||
| OR58 | 3.5 | 4 | 500 | 200 | 500 | >50 | >50 |
| OR214 | <3.5 | <3.5 | 500 | 200 | 500 | >50 | >50 |
| Gammaproteobacteria | |||||||
| OR27 | <3.5 | 3.5 | 500 | >200 | 500 | >50 | >50 |
| OR164 | 4.5 | 5 | 250 | 100 | 250 | 50 | 25 |
| OR87 | 3.5 | 4 | 250 | 200 | 250 | >50 | 25 |
| OR92 | 3.5 | 3.5 | 250 | 200 | 100 | >50 | 25 |
| Bacteroidetes | |||||||
| OR43 | 4 | 4 | 100 | >200 | >500 | >50 | 5 |
| OR53 | 4 | 4 | 100 | >200 | 500 | >50 | 5 |
| Actinobacteria | |||||||
| OR221 | <3.5 | <3.5 | >500 | >200 | 500 | >50 | >50 |
| OR23 | 4.5 | 4.5 | 250 | 100 | 250 | >50 | 5 |
| OR26 | 4 | 4.5 | 500 | 200 | 500 | >50 | >50 |