FIG. 7.

Lack of OprF disturbs the PQS system. H103 (black squares), H636 (white squares), and H6360 (gray diamonds) were transformed by a chromosomal pqsH-lacZ fusion insertion. (A) Growth of the three strains containing this insertion; (B and C) kinetics of HHQ (B) and PQS (C) production in the three strains; (D) expression of pqsH through the β-galactosidase activity assay of the transcriptional fusion pqsH-lacZ. The values are expressed as the means ± standard errors of the means. Experiments have been repeated at least three times.