Fig 3.

Reduction of incidence of disease symptoms (necrosis and/or bacterial ooze) in immature pear fruit by P. vagans C9-1 and antibiotic-deficient derivatives CIR591 (herbicolin I⁻/pantocin A⁺), CIR638 (herbicolin I⁺/pantocin A⁻), and CIR600 (herbicolin I⁻/pantocin A⁻). Immature pear fruits were treated with buffer or 5 × 10⁶ CFU ml⁻¹ wild-type C9-1 or derivatives (A) or buffer or 5 × 10⁵ CFU ml⁻¹ of wild-type C9-1 or antibiotic-deficient mutants (B) and subsequently challenged with 5 × 10⁵ CFU ml⁻¹ E. amylovora Ea110. Vertical lines indicate standard errors of the means. Similar letters above bars for a time point indicate that the transformed incidence of symptoms between treatments is not significantly different according to Fisher's protected least significant difference at P = 0.05.