Table 2.
Growth and percentage inhibition values for strain H21 in different metal concentrations.
| Strain H21 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Metal | Cu | Zn | Pb | ||||||
| ppm | Growth rate | Growth inhibition | SD 3 | Growth rate | Growth inhibition | SD 3 | Growth rate | Growth inhibition | SD 3 |
| PDA | 0.8 | (-) | ± 0.04 | 0.8 | (-) | ± 0.04 | 0.8 | (-) | ± 0.04 |
| 50 | (-) | (-) | (-) | 0.8 | 5 | ± 0.178 | (-) | (-) | (-) |
| 100 | 0.7 | 7 | ± 0.057 | (-) | (-) | (-) | 0.6 | 30 | ± 0.016 |
| 150 | (-) | (-) | (-) | 0.4 | 47 | ± 0.043 | (-) | (-) | (-) |
| 250 | (-) | (-) | (-) | 0.03 | 95 | ± 0.015 | (-) | (-) | (-) |
| 300 | 0.6 | 21 | ± 0.058 | (-) | (-) | (-) | 0.5 | 41 | ± 0.050 |
| 350 | (-) | (-) | (-) | 0.02 | 97 | ± 0.002 | (-) | (-) | (-) |
| 500 | 0.6 | 30 | ± 0.018 | 0 | 100 | ± 0 | 0.3 | 68 | ± 0.035 |
| 700 | 0.5 | 37 | ± 0.058 | 0 | 100 | ± 0 | 0.1 | 89 | ± 0.033 |
| 1000 | 0.1 | 88 | ± 0.018 | (-) | (-) | (-) | 0 | 100 | ± 0 |
| 1400 | 0 | 100 | ± 0 | (-) | (-) | (-) | 0 | 100 | ± 0 |
(-): Not determined; (0): No growth. All treatments were tested in triplicate. Data is presented as the average growth rate (cm/day) 1, growth inhibition (%) 2, and ± standard deviation (SD) 3.