Correction: The Cytochrome bd Oxidase of Porphyromonas gingivalis Contributes to Oxidative Stress Resistance and Dioxygen Tolerance

The affiliations for the fifth and sixth authors are incorrect. Drs. Vincent Meuric and Martine Bonnaure-Mallet are not affiliated with # 2 but with #1 EA1254 Microbiologie—Risques Infectieux, University of Rennes1, Rennes, France, and #3 CHU Rennes, Rennes, France.

There are errors in the captions to Figs 2 and 4. Please view the complete, correct Fig 2 and Fig 4 here.

Fig 2. Relative expression of cydA.

The relative expression was quantified by qRT-PCR with the 2^-ΔΔCt method. The normalization was done with the glucokinase house-keeping gene (PGN_0381). The expression of cydA in the wild-type strain was compared between stationary and exponential phases of growth. The white bar represents the ratio of expression in the stationary phase vs. the exponential phase. The relative expression of cydA in the exponential phase was compared between the complemented cydAB mutant and the wild type strains. The grey bar represents the ratio of expression of complemented mutant vs. wild-type. These data are the mean and standard deviations of two biological replicates containing three technical replicates.

Fig 4. Relative expression of sodB.

The relative expression of sodB was quantified by qRT-PCR with the 2^-ΔΔCt method. The normalization was done with the glucokinase gene (PGN_0381). The white histograms represent, for wild-type or cydAB mutant strains, the relative expression of sodB (A) or cydA (B) between both conditions: with paraquat (320 μM) and without paraquat (control condition). The grey histogram represents the relative expression of sodB between cydAB mutant and wild-type (control condition) in absence of paraquat. Bars represent standard errors.