FIG 5.

qRT-PCR analysis of the mRNA levels of gluP in the WT, ΔspoT, and spoT*strains. The WT, ΔspoT, and spoT*strains were exposed to different drug concentrations for 10 min (A) and exposed to specific drug concentrations for different time periods (B). The results were compared to those for the WT without drug treatment (control). The signal was normalized to the 16S rRNA levels. Data are the means ± standard errors of the means from three independent experiments. Significance was determined by the paired Student's t test between the WT and ΔspoT strains. **, P < 0.01; ***, P < 0.001.