Fig. 5
(A) and (B) show the effect of 1/2MS, －Fe, Fe2O3 (−Fe + Fe2O3), T1 (500 µL ZS-3 siderophore added to 100 mL of −Fe + Fe2O3 medium), T2 (1 mL ZS-3 siderophore added to 100 mL of −Fe + Fe2O3 medium), T3 (3 mL ZS-3 siderophore added to 100 mL of −Fe + Fe2O3 medium) and T4 (5 mL ZS-3 siderophore added to 100 mL of −Fe + Fe2O3 medium) treatments on plant active iron content and ferric reductase activity. (C) shows the expression of iron uptake-related genes in samples treated with 1/2MS, −Fe, Fe2O3 and −Fe + Fe2O3 + Siderophore (T2 treatment). Different lowercase letters indicate significant differences between treatments (P < 0.05)