Figure 4.

Stomatal aperture width (μm) in ASM-treated Japanese radish plants after application with SHAM or DPI. Fourth leaves of Japanese radish were dip-treated with ASM (100 ppm) and after 1 week, SHAM (1 mM), and DPI (10 μM) was dip-treated to the ASM-treated fourth leaves, and the untreated systemic upper (fifth) and lower (third) leaves. The microscope images of third (A), fourth (B), and fifth (C) leaves were taken 4 h after treatment of the chemicals using a Nikon optical microscope (Eclipse 80i). Then, stomatal aperture width (μm) were analyzed by image J using at least 100 stomata. In all bar graphs, vertical bars indicate the SE for three biological replicates. Significant differences (p < 0.05) are indicated by different letters based on a Tukey’s HSD test.