Table 1.
Treatment | Ascorbate (µmol g−1 dm) | Glutathione (µmol g−1 dm) | Activities of ascorbate–glutathione cycle enzymes (Ug−1 dm h−1) | ||
---|---|---|---|---|---|
MDHAR | DHAR | GR | |||
Untreated Control | 67.5 ± 0.17 | 6.5 ± 0.04 | 0.56 ± 0.004 | 0.38 ± 0.002 | 0.325 ± 0.002 |
IOS (20 mM H2O2) | 48.2 ± ± 0.11** | 4.3 ± 0.05* | 0.39 ± 0.007* | 0.27 ± ± 0.004* | 0.205 ± 0.001** |
IOS (500 µM H2O2) | 74.3 ± 0.19* | 7.9 ± 0.07** | 0.72 ± 0.004** | 0.50 ± 0.007** | 0.390 ± 0.004* |
ICS | 46.5 ± 0.21** | 5.2 ± 0.03** | 0.41 ± 0.004* | 0.25 ± 0.001** | 0.160 ± 0.001* |
Results are mean of three replicates ± standard error. *Significant from control at 0.05 level (t test); **significant from control at 0.01 level (t test)