Figure 2.

Effect of Cordia gilletii extracts on quorum sensing (QS)-regulated genes (a: lasB; b: rhlA) expressions, and QS-independent aceA gene (c) in Pseudomonas aeruginosa PAO1. Gene expression was measured as the b-galactosidase activity of the lacZ gene fusions expressed in Miller units. Root barks and leaves extracts were tested at 100 µg/ml (Hexane: n-hexane, DCM: Dichloromethane, EtOAc: Ethyl acetate, MeOH: Methanol). Dimethyl sulfoxide (DMSO) (1% [vol/vol], final concentration) was used as solvent control and naringenin (Nar: 4 mM, final concentration) as QS inhibitory control. *Significance at P < 0.05. All experiments were performed in six replicates