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. 2008 Apr 4;74(11):3387–3393. doi: 10.1128/AEM.02866-07

FIG. 1.

FIG. 1.

Changes in EtBr fluorescence as measured using an excitation wavelength at 500 nm and an emission wavelength at 580 nm. EtBr (4 μM) was added to the assay mixture to initiate the assay, and CCCP (final concentration, 100 μM) was added at the time point indicated by the arrow. (A) P. syringae pv. phaseolicola 1448A (▵) and 1448A.ΔmexAB-oprM (▾). (B) P. syringae pv. syringae B728a (▵) and B728a.ΔmexAB-oprM (▾). (C) P. syringae pv. tomato DC3000 (▵) and DC3000.ΔmexAB-oprM (▾). a.u., arbitrary units.