Effect of katE disruption on pathogenicity.
Xac WT (WT), XackatE (katE−) and cXackatE (ckatE) cells were inoculated at 105 CFU ml−1 in 10 mM MgCl2 into the intercellular spaces of fully expanded orange leaves. (A) A representative leaf 20 days after inoculation is shown. Left panel, adaxial side; right panel, abaxial side. Dashed lines indicate the infiltrated area. (B) Bacterial growth of Xac cells in orange leaves. Values represent means of three independent samples; error bars represent standard deviations.