Figure 7. Level of Dickeya dadantii bacterial infection of has mutants.

Degree of infection of wild-type, has1, has2 and has3 plants (40 to 48 individuals) and its evolution over 5 days after inoculation. The scale of infection is denoted by: 0: no symptom; 1: maceration limited to the inoculation point; 2: maceration extends from the infection point; 3: maceration covers half the lamina; 4: maceration spread over the whole lamina; 5: maceration spread over the whole leaf (lamina and petiole). Similar results were obtained in 2 independent experiments. *, significant differences, p<0.05%, between wild-type and mutants in Fisher tests comparing infection scores of ≥3.