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Fig. 2 | BMC Plant Biology

Fig. 2

From: Zn/Cd status-dependent accumulation of Zn and Cd in root parts in tobacco is accompanied by specific expression of ZIP genes

Fig. 2

Zinc concentration in plants grown under various Zn and Cd concentrations. 3.5-week old plants grown in the quarter-strength Knop’s medium were exposed for 17 days to the control medium supplemented with pairwise combinations of Zn (0; 1; 5; 10; 50 μM) and Cd (0; 0.25; 1; 4 μM) concentrations. Concentrations of metals were determined in the shoots (a), roots (b) and whole plants (c). The Translocation Factor (TF) was determined as the ratio of shoot/root concentrations of Zn (d). Concentrations of Zn were not measured for plants grown at the combination 4 μM Cd + 50 μM Zn since it was too toxic. Inserts in the (a, b, c) represent parts of the graph with decreased scale at the Y axis. Values correspond to arithmetic means ±SD (n = 10). Significance of differences between all values were evaluated by Student’s t-test (P ≤ 0.05), and it has been determined that each pair of values is significantly different if the SD bars do not overlap. Significance has not been marked above the bars with the letters or arrows to keep the clarity of the graph

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