Table 4.
Effects of rhizosphere bacterial inoculations on non-enzymatic, enzymatic expression and chromium accumulation of P. vulgaris.
| Treatment | Proline (mg/g FW) | MDA (μmol/g FW) | Enzyme activity (μmol/min/mg protein) |
Chromium accumulation (μg/g) |
|||
|---|---|---|---|---|---|---|---|
| CAT | POX | PPO | Root | Shoot | |||
| Control | 2.18 ± 0.16c | 1.21 ± 0.02b | 2.26 ± 0.16a | 87.42 ± 1.42a | 7.52 ± 0.07b | BDL | BDL |
| Cr(VI) | 7.45 ± 0.63a | 1.74 ± 0.09a | 6.94 ± 0.09a | 91.52 ± 2.85a | 9.62 ± 0.12a | 7.92 ± 0.39a | 4.28 ± 0.09a |
| AR6 + Cr(VI) | 1.15 ± 0.12c | 1.26 ± 0.04b | 1.22 ± 0.10a | 64.71 ± 1.64b | 6.69 ± 0.18c | 2.26 ± 0.28b | 1.45 ± 0.24b |
| AR8 + Cr(VI) | 4.17 ± 0.10b | 1.04 ± 0.03b | 2.14 ± 0.17a | 63.66 ± 0.28b | 6.04 ± 0.15c | 2.35 ± 0.50b | 1.65 ± 0.20b |
| F value | 67.50 | 29.33 | 3.86 | 66.64 | 118.90 | 64.34 | 68.28 |
Note: BDL - below detection limit. Results are expressed as the means of three replicates ± SE. Mean values followed by different letters are significantly different according to Tukey’s test at P < 0.05.