Micronutrient concentrations were also affected by Cd in the nutrient solution (Fig. 3). Iron concentrations increased 2-fold in both roots and stems in plants grown with 100M Cd, whereas in leaves it did not change. No significant differences in Fe concentrations were measured in the 10M Cd treatment in roots and stems, but leaf Fe concentration decreased by 50% when compared to controls (Fig. 3). Zinc concentrations also increased (2-fold) in roots of plants grown with 100M Cd, but no significant differences were observed in stems and leaves in any of the treatments (Fig. 3). Copper concentrations in roots increased by 50% only with 100M Cd supply, whereas in leaves and stems it decreased by 40 and 50%, respectively (Fig. 3). In contrast, Mn concentrations decreased markedly in roots with both Cd treatments, whereas in stems and leaves it did not change significantly (Fig. 3), except for leaves at 10M Cd, where there was a slight but significant increase.