Figure 1

Intracellular concentrations of c-di-GMP in WT, ΔdgcA, OdgcA and CdgcA strains determined by LC-MS/MS.

The values were means ± standard deviations for triplicate assays. Significances of differences by Student’s t-test are indicated (**P < 0.01; *P < 0.05; NS, P > 0.05).