Antibiotic-Induced Anomalous Statistics of Collective Bacterial Swarming
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Under sublethal antibiotics concentrations, the statistics of collectively swarmingᅠBacillus subtilisᅠtransitions from normal to anomalous, with a heavy-tailed speed distribution and a two-step temporal correlation of velocities. The transition is due to changes in the properties of the bacterial motion and the formation of a motility-defective subpopulation that self-segregates into regions. As a result, both the colonial expansion and the growth rate are not affected by antibiotics. This phenomenon suggests a new strategy bacteria employ to fight antibiotic stress.
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Benisty, Sivan, Ben-Jacob, Eshel, Ariel, Gil, et al.. "Antibiotic-Induced Anomalous Statistics of Collective Bacterial Swarming." Physical Review Letters, 114, no. 1 (2015) American Physical Society: https://doi.org/10.1103/PhysRevLett.114.018105.