Figure 5.

The Fe concentration in the shoot of WT and the overexpression mutant of OsABCG25 grown with excessive amounts of Fe (250 mg L⁻¹ FeSO₄) in nutrient solution. Ruled bars represent the Si-treated plants (+Si, 30 mg L⁻¹); white bars represent plants grown with low Si (−Si, 3 mg L⁻¹) concentration. Bars indicate the SE. Different letters indicate significant differences between WT plants grown without Si (−WT) and other treatments; students t-test with p < 0.05.