Table 2. Metal levels in rosettes and roots of Arabidopsis thaliana 21 days after sowing, inoculated or not with Cupriavidus metallidurans CH34 in the presence or absence of copper.
| Rosettes | Roots | |||||||
|---|---|---|---|---|---|---|---|---|
| MS1/2 | MS1/2 + 50 µM Cu2+ | MS1/2 | MS1/2 + 50 µM Cu2+ | |||||
| Control | +CH34 | Control | +CH34 | Control | +CH34 | Control | +CH34 | |
| B | 21.0 ± 1.6a** | 27.5 ± 2.2b | 44.0 ± 3.4c | 57.3 ± 5.3d | 14.6 ± 2.0a | 19.3 ± 0.9b | 70.1 ± 23.4c | 59.2 ± 23.9c |
| Co | 0.2 ± 0.0a | 0.3 ± 0.0b | 0.3 ± 0c | 0.5 ± 0.0d | 0.5 ± 0.1a | 0.9 ± 0.0b | 0.6 ± 0.1a | 1.0 ± 0.1b |
| Cu | 4.5 ± 0.0a | 4.7 ± 0.2b | 186.9 ± 6.1c | 289.0 ± 1.4d | 5.2 ± 0.1a | 6.2 ± 0.3b | 308.5 ± 13.8c | 426.2 ± 20d |
| Fe | 118.0 ± 5.4a | 167.9 ± 9.0b | 445.0 ± 34.4c | 484.1 ± 11.5d | 2671.6 ± 240.8a | 5091.6 ± 180.0b | 11098.0 ± 336.9c | 7636.7 ± 377.7d |
| Mn | 196.5 ± 9.7a | 217.7 ± 12.4b | 262.6 ± 15.4c | 350.4 ± 7.2d | 111.3 ± 9.0a | 163.0 ± 4.1b | 177.1 ± 9.7c | 195.2 ± 12.2d |
| Mo | 19.5 ± 1.4a | 18.4 ± 2.1a | 14.3 ± 0.4b | 23.0 ± 1.2c | 66.1 ± 7.3a | 25.8 ± 4.7b | 21.3 ± 4.1c | 35.0 ± 1.6b |
| Zn | 191.4 ± 17a | 191.8 ± 16.5a | 295.7 ± 15.1b | 359.2 ± 1.5c | 940.4 ± 56.2a | 1299.2 ± 55.9b | 1222.8 ± 46.7c | 2091.8 ± 107.8d |
Notes.
**
All values are expressed as µg metal g−1 of dry weight.
Standard Murashige-Skoog plant growth medium. MS1/2 + 50μM Cu2+ indicates same medium supplemented with 50 µM CuSO4x5H2O. Each condition had three technical replicates consisting of at least 8 mg of rosette or root material. Different letters represent significant differences between rosette or root levels of each metal (two-way ANOVA, p < 0.05; Tukey test, p < 0.05).