FIG. 6.

GUS activity in P. syringae pv. syringae FF5 derivatives grown in MGY broth containing H₂O₂ (A) or paraquat (B). Prior to the GUS assays, all strains were initially grown as described in Fig. 5; bacterial concentrations were then adjusted to an A₆₀₀ of 0.5 and incubated in MGY broth amended with H₂O₂ or paraquat. palgTA is described in Fig. 5. Values represent the mean from one experiment containing three replicates; the experiment was repeated with similar results. Treatments accompanied by the same lowercase letter were not significantly different at a P of 0.01 as determined by Duncan’s multiple-range test.