fls2 and Ws-0 plants exhibit enhanced susceptibility to COR-deficient mutant bacteria. Leaf appearances (A and C) and bacterial populations (B and D) 3 d after surface inoculation with Pst DC3118 at 1E + 8 CFU/mL. Results are displayed as means of four different leaves from four different plants, with ses indicated. Statistical differences are detected with ANOVA (P = 0.0001) followed by Turkey's multiple comparison test (showing comparisons to Col-0; ***, P < 0.001) for B, and with two-tailed t test (**, P < 0.01) for D.