Activities of various <i>phz1‘-’ lacZ</i> transcriptional fusions during logarithmic phase in strain M18 and its mutants.

<p>The various <i>phz1‘-’lacZ</i> transcriptional fusions in plasmid pME6522 (A) and their β-Galactosidase activities (B) in wild type strain <i>Pseudomonas</i> sp. M18 (black), <i>phzA1-G1</i> inactivated mutant M18ΔP1 (red) and <i>phzA2-G2</i> inactivated mutant M18ΔP2 (blue). All experiments were performed in triplicate, and each value is presented as the average ± standard deviation.