Fig 8. Effect of adaptation of PM411 on susceptibility of strawberry plants to infection by X. fragariae (Xf) and of pear and apple flowers to infection by E. amylovora (Ea).

Plants and blossoms were treated under greenhouse and field conditions, respectively, with adapted PM411 cells, non-adapted PM411 cells, kasugamycin or non-treated. Strawberry plants were sprayed with Xf in the greenhouse. Once treated, pear and apple flowers were collected in the field and inoculated with E. amylovora under controlled environment conditions in the laboratory. Values of severity are the mean of three replicates. Error bars represent the 95% confidence interval of the mean. Bars for severity panels with the same letter in the same panel do not differ significantly (P<0.05) according to the Tukey test.