Figure 3. PolyP levels and growth in static cultures.

The fluorescence intensity in arbitrary units (AU) of DAPI-polyP complex (excitation λ = 415 nm, emission λ = 550 nm) (A) and A_{560 nm} (B) were measured during the growth curve of MC4100 in static conditions in the indicated media. Biofilm formation was followed at the indicated times and media (C). Data represent the mean ± SD of at least four independent experiments. Different letters indicate significant differences according to Tukey's test with a p-value of 0.05.