FIG 2.
Effect of magnesium starvation on growth of wild-type, ΔmntR, and Δzur cells. (A) Growth curves of the wild-type (black symbols), ΔmntR (white symbols), and Δzur (gray symbols) strains grown in M9 medium in the presence of 25 mM MgCl2. A representative assay is represented. (B) Growth curves of the wild-type (black symbols), ΔmntR (white symbols), and Δzur (gray symbols) strains grown in MgCl2-depleted M9 medium. The doubling time of wild-type and Δzur cells is approximately 208 min. The doubling time of ΔmntR cells is approximately 122 min. A representative assay is represented. Note that the x axes are different in panels A and B for a better view of the data.