FIG. 2.

Influence of leaf pathogen infections or mechanical injury on the expression of a phlA-gfp fusion in pME7100 carried by strain CHA0 on cucumber roots. Cucumber plants were root inoculated with CHA0/pME7100, and leaves were infected with B. cinerea. Eight days later, root washes were analyzed by flow cytometry. The histogram shows the green fluorescence emitted by strain CHA0/pME7100 grown on the roots of healthy cucumber plants (gray peak) or cucumber plants attacked by B. cinerea (black peak).