Increased resistance to pathogen infection in atlyk3 mutants. Wild-type (WT), atlyk3-1, and atlyk3-3 rosette leaves were inoculated with B. cinerea (A) or with P. carotovorum for 24 h (B), and lesion areas were measured after 24 and 48 h, respectively. Values are means ± se (n ≥ 30). Asterisks indicate statistically significant differences between wild-type and mutant plants, according to Student’s t test (***P ≤ 1 × 10–4).