Table 2.

Activation of promoter–lux fusions by different antibiotics on solid and in liquid media

Table 2.
  • Bacterial cultures (E. coli: lasRI′, luxRI′, and ahyRI′ or S. typhimurium: rck) were tested on LB agar overlays or LB cultures as described in Materials and Methods. Amounts of antibiotics applied in solid assays ranged from 15 to 2 μg, and concentrations in liquid assays ranged from 19.53 to 0.3125 μg/ml. Values above the diagonal, solid medium; below the diagonal, liquid medium; −, no light production; +++, strong activation.