FIGURE 9.

GABA content of untreated and wounded Arabidopsis leaves. GABA levels of individual leaves of untreated Arabidopsis rosettes sampled with the cut-and-freeze-method (A,B). (C) GABA levels of individual leaves of untreated control plants and plants that were treated for 1 h with MecWorm sampled with the freeze-and-cut-method. Sampling direction is indicated in each figure by an arrow. The experiment was repeated two times independently (n ≥ 6) for (A,B) and five times independently (n ≥ 15) for (C). Statistically significant differences in (C) between GABA content of treated and untreated plants within the leaves were determined by unpaired two-sample Wilcoxon test. Asterisk indicates significance (^∗P < 0.05, ^∗∗∗P < 0.001). P-values are FDR corrected.