FIGURE 3.

Mutant Δeda is defective in virulence on potato tubers. (a) Tuber slides were inoculated with Δeda and Δedd strains derived from Pectobacterium atrosepticum SCRI1039 (WT). The y axis shows grams of macerated tissues measured 72 hr after inoculation. The experiment had six internal replicates and was conducted on at least three occasions. Values are the means ± SE. *Significant difference between wild type and mutant (p < .05; Duncan's multiple range test). (b) and (c) Mutants Δeda and Δedd had no effect on growth in media. Growth curves of P. atrosepticum SCRI1039 in Luria‐Bertani (LB) (b) and minimal medium (MM) supplemented with 0.2% glucose (c) over 120 hr. Values are the means ± SE of three independent experiments