Fig. 7.

jaz7-1D shows increased JA-sensitivity. Sensitivity of wild-type (WT), jaz7-1D and jaz7-1 seedlings to JA was determined by MeJA inhibition of root growth on control media versus media containing MeJA at 7 d post-germination. Representative images of seedlings on (A) control (0 µM MeJA) or (B) MeJA media (50 µM). jaz7-1D mutants have shorter roots under basal conditions (C) and their root elongation (D) shows increased sensitivity to MeJA. Root elongation of each line when grown on control media or media containing MeJA was calculated as a percentage relative to control treatment. Values are averages ±SE of three biological replicates consisting of pools of 10–15 seedlings. Values that differed significantly from the WT were identified by the one-way ANOVA and Dunnet’s post-hoc test (**, P<0.01). Similar results were obtained in independent experiments.