Effects of different concentrations of PYO on the expression of the <i>P</i>. <i>aeruginosa</i> oxidative stress response genes <i>ahpB</i> and <i>katB</i>.

<p>(<b>A)</b> Normalized cDNA levels measured by qRT-PCR. cDNA measurements were normalized by levels of the housekeeping gene <i>oprI</i> (see <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.3001093#sec009" target="_blank">Methods</a>). <b>(B)</b> Fold change in expression upon PYO treatment, relative to the measurements in untreated Δ<i>phz</i>. <i>ahpB</i>: alkyl hydroperoxide reductase B; <i>katB</i>: catalase B. Black horizontal lines mark the mean value for independent biological cultures (<i>n</i> = 3). The data underlying this figure can be found in Table G in <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.3001093#pbio.3001093.s018" target="_blank">S1 Data</a>. PYO, pyocyanin; qRT-PCR, quantitative reverse transcriptase PCR.</p> <p>(TIF)</p>