TABLE 4.

Expression of MW2 efflux pump genes in different growth phasesa

GeneAvg relative expression (SEM)
Early stationary phaseStationary phase
mgrA 9.30 (1.82)2.92 (1.28)
norA 6.59 (1.53)4.97 (1.38)
norB 5.44 (1.75)0.57 (0.39)
norC 84.65 (16.89)31.28 (26.01)
tet38 1.06 (0.23)9.85 (6.77)
  • a MW2 was grown in BHI broth at 37°C. gmk was used as an internal reference gene. Averages and standard errors of the means were calculated based on the results for three sets of samples.