Peer pressure from a Proteus mirabilis self-recognition system controls participation in cooperative swarm motility
Fig 3
Cells affected by Ids mismatch induce an increase in ppGpp; the relA and spoT genes are necessary to induce Ids-mediated territorial exclusion.
A. Mean ppGpp absorbances from wildtype, the Δids strain, and the ΔidsE strain, calculated by integrating areas under peaks. Errors show standard deviations. Asterisks show statistically significant difference (p = 0.03) between ΔidsE and wildtype, calculated through a Mann-Whitney test. B. Swarm colony radius expansion of the ΔidsE, ΔidsEΔrelA, ΔidsEΔspoT, and ΔidsEΔrelAΔspoT strains after 16 hours of swarming. All replicates are shown. Asterisks show statistically significant difference between strains (p = 0.02) calculated through a Kruskal-Wallis test.