Table 5.
Effect of Sb on the AsA, DHA, and ascorbate pool (AsA+DHA) contents and the AsA/DHA ratio, the GSH, GSSG, and glutathione pool (GSH+GSSG) contents and the GSH/GSSG ratio, in D. viscosa. The data are from 10 independent experiments, each carried out in triplicate (different letters indicate significant differences at p < 0.05, Mann–Whitney U-test).
| Treatments | AsA (nmol g−1 FW) | DHA (nmol g−1 FW) | AsA + DHA (nmol g−1 FW) | AsA/DHA | ||||
|---|---|---|---|---|---|---|---|---|
| Roots | Leaves | Roots | Leaves | Roots | Leaves | Roots | Leaves | |
| Control | 76.86 ± 7.63a | 185.30 ± 15.61b | 308.23 ± 18.57a | 1827.49 ± 129.10a | 385.06 ± 21.14a | 2012.72 ± 92.75a | 0.249 ± 0.030a | 0.101 ± 0.009c |
| 0.5 mM Sb | 70.30 ± 8.53a | 210.21 ± 10.17a | 339.24± 28.13a | 1288.89 ± 52.30b | 409.54 ± 32.17a | 1499.10 ± 105.11b | 0.210 ± 0.024a | 0.164 ± 0.009b |
| 1.0 mM Sb | 64.55 ± 8.05a | 213.97 ± 22.80a | 243.41 ± 13.10b | 1021.50 ± 100.13c | 307.92 ± 18.50b | 1237.47 ± 107.98c | 0.264 ± 0.027a | 0.224 ± 0.044a |
| Treatments | GSH (nmol g−1 FW) | GSSG (nmol g−1 FW) | GSH + GSSG (nmol g−1 FW) | GSH/GSSG | ||||
| roots | leaves | roots | leaves | roots | leaves | roots | leaves | |
| Control | 2.81 ± 0.32a | 5.01 ± 0.72a | 0.34 ± 0.04a | 10.10 ± 1.82a | 3.15 ± 0.30a | 15.11 ± 1.53a | 8.36 ± 1.3a | 0.492 ± 0.035a |
| 0.5 mM Sb | 0.90 ± 0.12b | 3.48 ± 0.16b | 0.23 ± 0.11b | 10.25 ± 0.86a | 1.13 ± 0.21b | 13.73 ± 1.10ab | 3.91 ± 0.8b | 0.342 ± 0.014b |
| 1.0 mM Sb | 0.54 ± 0.23c | 2.60 ± 0.29c | 0.14 ± 0.08c | 8.31 ± 0.49b | 0.68 ± 0.24c | 10.91 ± 0.57b | 3.85 ± 0.9b | 0.316 ± 0.044b |