Enhanced resistance against B. cinerea of atlyk3-1 plants is dependent on PAD3. Wild-type (WT), atlyk3-1, pad3-1, and atlyk3-1 pad3 rosette leaves were inoculated with B. cinerea, and lesion areas were measured 48 h after inoculation. Values are means ± se (n ≥ 10). Different letters indicate statistically significant differences, according to one-way ANOVA followed by Tukey’s honestly significant difference test (P ≤ 0.01). This experiment was repeated twice with similar results.