Expression of the <i>wggR</i> gene.

<p><b>A.</b> Average GUS activity of the <i>wggR-gusA</i> merodiploid reporter in the wild type background (MG305, filled circles), <i>sinI</i> (MG306 (filled triangles) or in MG306 with 150 nM of C_16:1-HSL (open triangles) in bacteria grown on surfaces of the soft agar. Averages of three biological replications within a representative experiment are shown, error bars are standard deviation. <b>B.</b> Average GFP activity [fluorescence/OD₅₉₅] of <i>wggR-gfp</i> fusion reporter plasmid pMG310 in Rm8530 (filled diamonds), in MG32 (filled squares, short dashes), and in MG32 with 150 nM of C16:1-HSL (open squared). Background fluorescence of the pVO190 vector in MG32 is shown as a dashed line with stars.