Table 1.
Fresh (FW) and dry weight (DW), Se concentration, total Se content (on FW basis), S concentration, sulfate concentration, cysteine (Cys) and glutathione (GSH) content in leaves, and roots of radish plants cultivated in soil.
| Leaves | ||||
|---|---|---|---|---|
| Se treatment (mg per plant) | ||||
| 0 | 5 | 10 | 20 | |
| Fresh weight (g) | 14.61 ± 1.52a | 13.80 ± 1.2a | 14.61 ± 2.65a | 9.62 ± 0.91b |
| Dry weight (g) | 1.46 ± 0.06b | 1.77 ± 0.06a | 1.83 ± 0.05a | 1.19 ± 0.07c |
| Se (μg g−1 DW) | 2.42 ± 1.20d | 346.5 ± 48.8c | 725.22 ± 170.67b | 1299.71 ± 390.94a |
| Total Se (μg) | 0.35 ± 0.11c | 78.59 ± 10.1b | 166.23 ± 14.25a | 191.3 ± 25.30a |
| S (mg g−1 DW) | 6.02 ± 1.52c | 9.12 ± 0.89bc | 10.50 ± 1.93ab | 12.20 ± 1.82a |
| Sulfate (mg g−1 DW) | 2.35 ± 0.36c | 7.66 ± 1.41b | 17.08 ± 2.67a | 14.49 ± 3.93a |
| Cys (nmol g−1FW) | 12.95 ± 0.49a | 11.45 ± 2.43a | 11.79 ± 0.71a | 12.15 ± 2.85a |
| GSH (nmol g−1FW) | 137.64 ± 14.43b | 155.02 ± 28.86ab | 163.23 ± 32.52ab | 212.37 ± 51.38a |
| Roots | ||||
| Se treatment (mg per plant) | ||||
| 0 | 5 | 10 | 20 | |
| Fresh weight (g) | 25.40 ± 2.6a | 27.56 ± 1.65a | 29.10 ± 4.32a | 22.56 ± 1.08b |
| Dry weight (g) | 1.82 ± 0.17b | 2.69 ± 0.30a | 2.22 ± 0.25a | 1.18 ± 0.14c |
| Se (μg g−1 DW) | 0.41 ± 0.03c | 26.42 ± 4.32b | 90.83 ± 15.01a | 111.35 ± 31.02a |
| Total Se (μg) | 0.000 ± 0.000c | 6.93 ± 0.90b | 15.38 ± 2.50a | 6.87 ± 1.86b |
| S (mg g−1 DW) | 4.14 ± 0.71a | 4.18 ± 0.54a | 4.15 ± 0.20a | 4.14 ± 0.46a |
| Sulfate (mg g−1 DW) | 2.06 ± 0.32a | 1.64 ± 0.17a | 1.81 ± 0.21a | 1.16 ± 0.38b |
| Cys (nmol g−1FW) | 2.19 ± 0.44b | 5.35 ± 2.18a | 7.46 ± 1.08a | 2.77 ± 1.24b |
| GSH (nmol g−1FW) | 29.27 ± 2.67b | 51.76 ± 6.23a | 44.66 ± 3.06a | 35.10 ± 4.59b |
Data represent the mean of 10 biological replicates for FW and DW, and five biological replicates for the remaining determinations. Different letters along rows indicate significant differences (p < 0.05, ±STD) among treatments.