Figure 6: Relationship between the amounts of Ca2+ accumulated in the shoots (μg plant-1) and the relative growth rate (RGR. d-1). B: Basal medium; Pb basal medium supplied with 400 μM Pb(NO3)2; B-K; B-Ca and B-N: basal medium deprived of K+; Ca2+ or N, respectively. Means of eight replicates.