Figure 3.

Detection of superoxide anion, hydrogen peroxide, nitric oxide, hydrogen sulfide, peroxynitrite, and S-nitrosothiols in the roots (A–C,G–I), and the average fluorescence intensity levels quantified in arbitrary units (D–F,J–L), respectively. At least five roots were tested for each experimental condition and five independent repeats were analysed (different letters indicate significant differences at p < 0.05, Mann–Whitney U-test). Bar: 200 μm.