Affiliation:
1. Department of Physics, University of Science and Technology of China, Hefei 230026, China
Abstract
Significance
The monotrichous
Pseudomonas aeruginosa
was usually thought to swim in a pattern of “run and reverse” (possibly with pauses in between), where straight runs alternated with reverses with angular changes of swimming direction near 180°. Here, by simultaneously tracking the cell swimming and the morphology of its flagellum, we discovered a swimming mode in
P. aeruginosa
—the wrap mode, during which the flagellar filament wrapped around the cell body and induced large fluctuation of the body orientation. The wrap mode randomized swimming direction, resulting in a broad distribution of angular changes over 0 to 180° with a peak near 90°. This allowed the bacterium to explore the environment more efficiently, which we confirmed by stochastic simulations of
P. aeruginosa
chemotaxis.
Funder
National Natural Science Foundation of China
Publisher
Proceedings of the National Academy of Sciences
Cited by
11 articles.
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