Colony Expansion of Socially Motile Myxococcus xanthus Cells Is Driven by Growth, Motility, and Exopolysaccharide Production
Fig 2
The model fits the density-dependent expansion data from social-motility assay experiments.
(A) Colony radius of M. xanthus strain DZ2 (A+S+) on 0.5% agar CYE plates after 24 h at different initial cell densities is represented by the stars. The solid line represents the numerical prediction from our model with parameters as in Fig 1. (B) The expansion rate at different initial cell densities for M. xanthus A−S+ strains (an average of three S-motile strains: DK1217, DK1218, DK1219) on 1.5% agar CTT plates at 8 hr is represented by the stars. The solid line represents the numerical prediction from our model in which most of the parameters are the same as in Fig 1, except g = 0.154 h−1,Dp = 16 μm2min−1, m = 4, α/e0 = 150 h−1.