Figure 2.

Plant natriuretic peptides (PNPs) promote stomatal aperture. Quantification of stomatal apertures in leaves of Arabidopsis thaliana transgenic lines. As control (C), Col‐0 and Col‐0 rdr6‐11 were analysed and showed similar apertures; thus, the average value was considered as the control. Naphthalene acetic acid (NAA) at 1 μm and abscisic acid (ABA) at 50 μm were used as controls of aperture and closure, respectively. Bars are the means of the apertures of 100 stomata, and the results are representative of three independent experiments. Error bars indicate standard deviations. The data were analysed by analysis of variance (ANOVA) followed by Tukey's test. Bars with different letters are significantly different (P < 0.05).