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. 2014 Mar 21;9(3):e92920. doi: 10.1371/journal.pone.0092920

Figure 2. A bapR mutation affects bapA expression and biofilm formation.

Figure 2

A, the activity of a PbapA-lacZ promoter fusion was measured in both the WT and the bapR genetic backgrounds from samples taken from late exponential cultures. B, biofilm formation in 96-well plates was measured after 20 h, staining the biomass adhered to the wells with crystal violet. Error bars, SEM. Asterisks denote significant differences in bapA expression between WT and the bapR mutant strain (t-test, *** p<0.0001, n≥3).