Table III. Effect of excess zinc on the level of several chemical elements.
The concentrations of 15 chemical elements were determined in the shoots and roots of wild-type plants grown either on MS or 300-Zn medium. Data shown represent means ± sd of three independent experiments.
| Additional 300 μm ZnSO4 | Root |
Shoot |
|||
| — | + | — | + | ||
| Zinc | mg g−1 | 0.752 ± 0.087 | 10.5 ± 0.4 | 0.114 ± 0.074 | 0.928 ± 0.011 |
| Iron | mg g−1 | 2.47 ± 0.12 | 1.73 ± 0.11 | 0.128 ± 0.001 | 0.103 ± 0.004 |
| Calcium | mg g−1 | 1.46 ± 0.08 | 1.68 ± 0.08 | 4.66 ± 0.13 | 4.42 ± 0.05 |
| Potassium | mg g−1 | 19.7 ± 2.1 | 15.3 ± 0.4 | 43.3 ± 0.6 | 36.5 ± 1.0 |
| Magnesium | mg g−1 | 1.78 ± 0.12 | 1.83 ± 0.07 | 3.14 ± 0.01 | 2.77 ± 0.04 |
| Sodium | mg g−1 | 1.16 ± 0.11 | 0.898 ± 0.189 | 1.66 ± 0.03 | 1.51 ± 0.046 |
| Phosphorus | mg g−1 | 8.28 ± 0.45 | 9.33 ± 0.13 | 8.96 ± 0.19 | 7.17 ± 0.09 |
| Sulfur | mg g−1 | 6.07 ± 0.35 | 6.66 ± 0.11 | 6.74 ± 0.14 | 10.3 ± 0.1 |
| Aluminum | μg g−1 | 14.0 ± 2.7 | 21.0 ± 1.4 | 13.9 ± 2.0 | 9.62 ± 1.34 |
| Boron | μg g−1 | 17.6 ± 2.6 | 14.5 ± 6.5 | 32.7 ± 0.9 | 38.1 ± 2.5 |
| Copper | μg g−1 | 7.80 ± 0.94 | 15.0 ± 4.8 | 5.58 ± 0.34 | 13.8 ± 2.7 |
| Manganese | μg g−1 | 29.2 ± 0.24 | 33.9 ± 2.2 | 69.3 ± 0.8 | 67.3 ± 0.6 |
| Cadmium | μg g−1 | 0.240 ± 0.134 | 0.270 ± 0.113 | 0.063 ± 0.052 | 0.039 ± 0.001 |
| Cobalt | μg g−1 | 5.77 ± 0.42 | 3.40 ± 0.31 | 0.362 ± 0.052 | 0.112 ± 0.055 |
| Chromium | μg g−1 | 3.24 ± 1.03 | 1.98 ± 0.32 | 0.962 ± 0.029 | 1.00 ± 0.06 |