FIGURE 3.
ACC concentration in Fe-sufficient roots (A) and shoot appearance (B) of Arabidopsis WT Columbia and opt3-2, frd3-3, and nas4x-1 mutant plants. Note the chlorosis in the frd3-3 and nas4x-1 mutants. Plants were grown in nutrient solution with Fe. Data represent the mean ± SE of six replicates. Significant differences from Col are indicated: ∗∗P < 0.05.