FIG. 3.

Ybt cross-inducer assay performed with two reporter strains. Reporter strains (WA-CSirp1::Kan^rG [hatched bars] and WA-CSirp9::Kan^rG [shaded bars]) were grown in NBD medium containing (i) sterile filtered supernatant of WA-CS grown in NBD (NBDW), (ii) WA-CSirp9::Kan^r grown in NBD (NBDi9), (iii) WA-CSirp9::Kan^r grown in NBD plus 300 μM chorismate (NBDi9C), and (iv) WA-CSirp9::Kan^r grown in NBD plus 300 μM salicylate (NBDi9S). Bars represent GFP fluorescence of the strains. Standard deviations (for three experiments) are indicated by error bars. au, arbitrary units.