Figure 2.

The correlation of bacterial growth and gene expression monitored by luminescence and fluorescence. Bacteria harboring plasmid pGLspa were inoculated in a black 96-well microtiter plate with clear bottom (Greiner bio-one, German) and OD, luminescence, and fluorescence were monitored for every 30 min using a DTX880 multimode plate reader (Beckman Coulter). Blue triangle, luminescence signal of bacteria with plasmid pGLspa; Black triangle, OD reading of bacteria with plasmid pGLspa; Red triangle, fluorescence signal of bacteria with plasmid pGLspa.