Table 1.
Cadmium concentrations (mg kg−1 dry weight) in leaves and roots and the translocation factor (%) of Arabidopsis thaliana plants grown under control conditions (0 μM CdSO4) or exposed to 5 μM CdSO4 during 2 h, 4 h, 6 h, 24 h after 3 weeks of growth. For each time point, data represent the mean ± S.E. of four biological independent replicates. Significant differences (t-test: p < 0.05) between control and exposed plants, within each time point, are marked in green. Significant differences over time are indicated with different letters (one-way ANOVA: p < 0.05). LOD: Cd levels below limit of detection (<10 ppb).
| Cd Concentration (mg kg−1 DW) | |||||
| Organ | [CdSO4] | 2 h | 4 h | 6 h | 24 h |
| Leaf | 0 µM | 0.68 ± 0.12 | 0.62 ± 0.16 | 0.65 ± 0.09 | 0.90 ± 0.17 |
| 5 µM | 6.86 ± 0.17 a | 61.01 ± 2.73 b | 152.97 ± 4.84 c | 840.24 ± 11.71 d | |
| Root | 0 µM | LOD | LOD | LOD | LOD |
| 5 µM | 536.44 ± 14.24 a | 620.39 ± 13.40 b | 730.78 ± 14.25 c | 1788.57 ± 65.40 d* | |
| Translocation Factor | |||||
| [CdSO4] | 2 h | 4 h | 6 h | 24 h | |
| 5 µM | 1.28 ± 0.04 a | 9.86 ± 0.53 b | 21.00 ± 0.97 c | 47.24 ± 1.88 d | |