Figure 1.

Ethylene treatment impairs stomatal closure induced by ABA treatment. A and B, Overall phenotype of wild-type (A) and eto1-1 (B) plants. C and E, Wild-type stomata preopened in light conditions without (C) and with (E) ethylene gas. D and F, Wild-type stomata after incubation with 10 μm ABA for 30 min without (D) and with (F) ethylene. Bars = 5 μm. G, Time-course changes in stomatal apertures (width, μm) after ABA treatment of wild-type (white circles), wild-type exposed to ethylene gas (black squares), wild type treated with ACC (black triangles), and eto1-1 plants (black circles). Bars represent means ± ses.