FIG 7.

Physical properties of each organism impact the coculture structure and function. (A) Storage modulus (G′, elastic component) and loss modulus (G″, viscous component) of B. subtilis and P. agglomerans biofilms in monoculture and coculture measured over a range of frequencies after 48 h of growth on MSgg (n = 5). Error bars represent standard errors of means. (B) CFU per colony counts of B. subtilis and P. agglomerans in monoculture and coculture biofilms treated with gentamicin for 24 h after 24 h of prior growth. Error bars indicate standard deviations. *, P < 0.05. Statistical significance was determined by a two-tailed t test.