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Figure 4 | BMC Microbiology

Figure 4

From: Staphylococcus aureus sigma B-dependent emergence of small-colony variants and biofilm production following exposure to Pseudomonas aeruginosa 4-hydroxy-2-heptylquinoline-N- oxide

Figure 4

SigB and agr activities are modulated by an exposure to HQNO. Relative expression ratios for the genes asp23 (A), fnbA (B), hld (C), hla (D), sarA (E) and gyrB (F) were evaluated by qPCR for strains Newbould and NewbouldΔsigB grown to the exponential phase in the presence (black bars) or in the absence (open bars) of 10 μg/ml of HQNO. Results are normalized to unexposed Newbould (dotted line). Data are presented as means with standard deviations from at least three independent experiments. Significant differences between the unexposed and HQNO-exposed conditions (*, P < 0.05; ***, P < 0.001) and between Newbould and NewbouldΔsigB for the same experimental condition (Δ, P < 0.05; ΔΔ, P < 0.01; ΔΔΔ, P < 0.001) were revealed by one-way ANOVA followed by the tuckey's post test.

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BMC Microbiology

ISSN: 1471-2180

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