Figure 7.
Erwinia amylovora‐induced tumour growths are largely independent of salicylic acid (SA). Plants were infiltrated with E. amylovora [optical density at 600 nm (OD600) = 0.1] or 10 mm MgSO4 as a control and observed for leaf morphology. The number of abnormal growths was counted at 5 days post‐inoculation (dpi) on the infected leaves with the assistance of a dissecting microscope. At least 25 leaves per genotype were used for counting. Error bars represent standard deviation. Different letters indicate significant difference amongst the samples (P < 0.05). These experiments were repeated twice with similar results.