Table 1.
Minimum inhibitory concentrations (MICs) of cadmium, cobalt, copper, and zinc in various derivatives of P. putida X4.
| Strains | MIC (mmol·L−1) a | |||
|---|---|---|---|---|
| Cd2+ | Co2+ | Cu2+ | Zn2+ | |
| X4 | 4.5 | 4.0 | 5.0 | 8.5 |
| X4 with pvlt31 | 4.5 | 4.0 | 5.0 | 8.5 |
| ΔS1 | 3.0 | 0.5 | 4.25 | 2.25 |
| ΔS2 | 2.0 | 1.5 | 4.75 | 8.5 |
| ΔczcH | 2.0 | 1.75 | 5.0 | 7.0 |
| ΔS1S2 | 1.25 | 0.5 | 4.25 | 5.0 |
| ΔS1c | 4.25 | 3.5 | 4.5 | 7.5 |
| ΔS2c | 4.25 | 4.0 | 4.75 | 8.5 |
| ΔczcHc | 3.75 | 3.5 | 5.0 | 8.25 |
a MICs were recorded after 60 h of growth at 30 °C on Tris-buffered medium containing metals salts from 0.5 to 10 mmol·L−1, with 0.25 mmol·L−1 interval. MIC values are the averages of four determinations.