A eukaryotic-type signalling system of Pseudomonas aeruginosa contributes to oxidative stress resistance, intracellular survival and virulence

Table 6 Fold change of expression of pppA and ppkA genes in the strains PAO1::tn7TLAC, Δ::tn7TLAC and Δ::tn7TLACpak.

	Fold change^a
Gene	Δ::tn7TLACpak+IPTG/ PAO1::tn7TLAC+IPTG	Δ::tn7TLACpak/ PAO1::tn7TLAC
pppA	27.49 ± 5.36	-1.32 ± 0.34^b
ppkA	35.16 ± 6.76	1.59 ± 0.67^b

^a Fold changes represent the ratio of the expression levels in the comparison of P. aeruginosa Δ::tn7TLACpak or Δ::tn7TLAC, respectively, and PAO1::tn7TLAC. Minus (-) sign indicates a decreased expression in Δ strains;^b Fold change not significantly different from PAO1::tn7TLAC (P > 0.05); + IPTG - induction of expression with 1 mM IPTG

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