Journal: Journal of Bacteriology
Article Title: FleQ finetunes the expression of a subset of BrlR-activated genes to enable antibiotic tolerance by Pseudomonas aeruginosa biofilms
doi: 10.1128/jb.00503-24
Figure Lengend Snippet: FleQ contributes to biofilm formation in a manner independent of SagS and SagS downstream signaling. ( A ) Representative confocal images of 3-day-old biofilms formed by P. aeruginosa PAO1, Δ fleQ, and double mutant Δ fleQΔsagS . White bar = 100 µm. ( B ) Quantitative of the biofilm biomass and biofilm height by COMSTAT of biofilms formed by P. aeruginosa PAO1, Δ fleQ, and double mutant Δ fleQΔsagS. * *, ***, significantly different ( P = 0.0001, <0.0001, respectively) relative to PAO1 using ANOVA followed by the Bartlett’s test. Ns, not significant. ( C ) Total cellular c-di-GMP levels in 6-day-old biofilms formed by P. aeruginosa PAO1, Δ fleQ, and ΔsagS, as determined by HPLC quantitative analysis, followed by normalization relative to total cell protein content. *, P < 0.05, relative to PAO1 using ANOVA followed by Dunnett’s T3 multiple comparisons test. ( D ) Representative confocal images of 6-day-old P. aeruginosa Δ fleQ and ΔsagS biofilms and mutant biofilms expressing bfiR and gcbA. gcbA encodes diguanylate cyclase GcbA, bfiR the two-component response regulator BfiR. White bar = 100 µm. All experiments were performed in triplicate. Error bars indicate standard deviations.
Article Snippet: Quantitative analysis of the images was performed using COMSTAT MATLAB package and COMSTAT2 ( , ).
Techniques: Mutagenesis, Expressing