FIG. 6.

Suppression of epistatic Aer defects by mutant Tar receptors. Transducerless strain UU1250 was transformed with compatible plasmids (pKG106 derivative plus pLC113 derivative) and tested for Aer and Tar function on tryptone soft agar. The genotypes of the Aer plasmids are listed in panel A; those of the Tar plasmids are listed in panel C. Plates contained various combinations of inducers to express Aer alone (A) (50 μM IPTG, 0 μM salicylate), Aer plus Tar (B) (50 μM IPTG, 0.7 μM salicylate), or Tar alone (C) (0 μM IPTG, 0.7 μM salicylate). Incubation was at 30°C for 12 h. WT, wild type.