Fig. 1.
(GlcNAc)8 but not (GlcN)8 induces stomatal closure mediated by CERK1. (A and B) Dose effect of (GlcNAc)8 (A) and (GlcN)8 (B) on Col-0 stomatal aperture. (C) (GlcNAc)8-induced stomatal closure in cerk1 knockout and complemented plants. Averages from three independent experiments (90 total stomata per bar) are shown. Data are mean ± SEM (n = 3). Student’s t test: *P < 0.05; N.S., no significant difference.