Fig. 3.
Analysis of the leaf-associated growth and the ability of canker formation of the XccWT, Xcc∆otsA, and Xcc∆otsAc strains using a natural method of infection. (A) Quantification of the population size of leaf-associated bacteria as log cfu cm–2 of citrus leaf surface on the indicated dpi. Values represent the mean of four leaves assayed for each strain. Error bars indicate the standard deviation. (B) Quantification of canker number on citrus leaves after 1 month of spray inoculation with the different strains at 109 cfu ml–1. N.D., not detected. The data were analysed for statistical differences by one-way ANOVA (P<0.05).