Figure 6.

ROC3 participates in ROS signal-regulated stomatal closure. (A) Stomatal closure assays of WT and roc3 mutant leaf epidermis treated with either ABA and/or H₂O₂, and stomatal aperture width/length ratios measured in at least 60 stomata per genotype per replicate. Means shown in the form mean ± SE (n = 60), **: means differed significantly from WT (P < 0.01). (B) Stomatal closure assays of WT and roc3 mutant leaf epidermis treated with ABA and/or AT, and stomatal aperture width/length ratios measured in at least 60 stomata per genotype per replicate. Values shown in the form mean ± SE (n = 60), **: means differed significantly from WT (P < 0.01). Both of the experiments were repeated three times.