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. 2005 Feb;137(2):724–737. doi: 10.1104/pp.104.055806

Figure 7.

Figure 7.

Effects of Phyto-S1P on stomatal aperture in wild-type and G-protein α-subunit null mutant gpa1-1 and gpa1-2 plants. A and C, Apertures after a 2.5-h pretreatment in the dark and a further 2-h light treatment with or without Phyto-S1P. Changes in stomatal aperture reflect final minus initial (3.15 ± 0.15 μm) aperture in the dark. B and D, Apertures after a 2.5-h light pretreatment and a further 3-h light treatment with or without Phyto-S1P. Changes in stomatal aperture reflect final minus initial (6.09 ± 0.07 μm) aperture. Data are means ± se of 3 independent experiments; n = 40 apertures/experiment. Pairwise comparisons are simultaneously significant at P ≤ 0.05 by Scheffe's method.