Cu uptake and accumulation by different plant parts (shoots and roots tissues) of C. capsularis seedlings under different levels of Cu in the nutrient solution with the exogenous supplementation of CA. Values are demonstrated as means of three replicates along with standard deviation (SD; n = 3). One-way ANOVA was performed and means differences were tested by LSD (p < 0.05). Different uppercase and lowercase letters on the error bars indicate significant differences between the treatments within shoots and roots, respectively. Cu0CA0 (Cu = 0 μM and CA = 0 mM), Cu0CA1 (Cu = 0 μM and CA = 2 mM), Cu1CA0 (Cu = 50 μM and CA = 0 mM), Cu1CA1 (Cu = 50 μM and CA = 2 mM), Cu2CA0 (Cu = 100 μM and CA = 0 mM), Cu2CA1 (Cu = 100 μM and CA = 2 mM).