期刊
PHYSICAL REVIEW LETTERS
卷 117, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.178102
关键词
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资金
- Human Frontier Science Program [RGP0061/2013]
- Ernst Ludwig Ehrlich Studienwerk
- Tianjin Municipal Natural Science Foundation [15JCZDJC41100]
- Office of Naval Research Grant [N000141410051]
- Engineering and Physical Sciences Research Council [1238315] Funding Source: researchfish
Guided movement in response to slowly diffusing polymeric trails provides a unique mechanism for self-organization of some microorganisms. To elucidate how this signaling route leads to microcolony formation, we experimentally probe the trajectory and orientation of Pseudomonas aeruginosa that propel themselves on a surface using type IV pili motility appendages, which preferentially attach to deposited exopolysaccharides. We construct a stochastic model by analyzing single-bacterium trajectories and show that the resulting theoretical prediction for the many-body behavior of the bacteria is in quantitative agreement with our experimental characterization of how cells explore the surface via a power-law strategy.
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