Figure 9. Exogenous application of GA₃ or ABA to pds2-1 mutants.

(A) Root hair of a pds2-1 mutant plant after 10 µM GA₃ treatment. Scale bar = 1 mm. (B) Root hair of a pds2-1 mutant plant without GA₃ treatment. Scale bar = 1 mm. (C) Representative petiole lengths from pds2-1 mutants with exogenously applied GA₃ (GA₃+) or without GA₃ (GA₃−). Scale bar = 1 mm. (D) Petiole length analyses of pds2-1 plants with or without GA₃ treatment. A total of 30 leaves (from 10 plants) were measured for each sample. ** indicates significantly different means (± SD) at P<0.01 compared to those without GA₃ treatment. (E) The longer flower bud pistil seen on pds2-1 mutant plants after GA₃ treatment. Scale bar = 0.5 mm. (F) Trichomes (arrows) on a pds2-1 mutant stem after GA₃ treatment. (G) Sizes of bolting pds2-1 mutant plants grown on ½ strength MS medium with or without GA₃ treatment. (H) Mature pds2-1 mutant plant showing multiple flowing shoots after GA₃ treatment. (I) Usual stomata structure of a WT plant without ABA treatment. Scale bar = 5 µm. (J) Swollen open stomata structure of a pds2-1 mutant without ABA treatment. Scale bar = 5 µm. (K) Closed stomata structure of a pds2-1 mutant after 10 µM ABA treatment. Scale bar = 5 µm.