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. 2016 Oct 25;17(11):1777. doi: 10.3390/ijms17111777

Figure 9.

Figure 9

The effect of exogenous melatonin on the pH values of Arabidopsis plants. Seven-day-old seedlings were grown in −Fe (0 μM Fe) or +Fe (50 μM Fe) medium (pH = 5.6) without or with the presence of 5 μM melatonin (−MT or +MT) for the indicated times for measuring the pH values (A). In addition, soluble Fe content of shoots (B) and roots (C) were determining after seven-day-old WT and aha2 were placed in −Fe or +Fe medium with or without the presence of 5 μM melatonin for 8 days. Each bar is the mean ± SE of at least three replicates, and different lowercase letters above the bars indicate significant differences using a Tukey’s test at p < 0.05.