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Survival of X. campestris pv. campestris strains in the presence of visible light and toluidine blue. (A) Parent (B-24), xanthomonadin pigC mutant (B24-C4), and restored mutant (B24-C4R) strains. (B) Parent (B-24), xanthomonadin pigG mutant (B24-G14), and restored mutant (B24-G14R) strains. Values are the means of five replicates, and the bar at each datum point shows the standard error of the mean. The experiment was repeated twice with similar results.
