Figure 1.

Fe deficiency increases Cd accumulation in maize plants. Fifteen-day-old Fe-sufficient and Fe-deficient plants were harvested after 12, 24, or 48 h following addition of 0, 1, 5, or 25 μm CdCl₂ to the nutrient solution. A, Dry matter of shoot and roots. B, Cd concentrations. C, Fe concentrations. Significant differences among Fe-deficient (−Fe) and Fe-sufficient (+Fe) plants as determined by ANOVA followed by the Tukey test are indicated by an asterisk (P < 0.05; n = 4). Bars indicate means ± sd.