Reversal of bacterial locomotion at an obstacle
Recent experiments have shown large-scale dynamic coherence in suspensions of the bacterium B. subtilis, characterized by quorum polarity, collective parallel swimming of cells. To probe mechanisms leading to this, we study the response of individual cells to steric stress, and find that they can re...
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| Veröffentlicht in: | Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2006-03, Vol.73 (3 Pt 1), p.030901-030901, Article 030901 |
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| container_end_page | 030901 |
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| container_issue | 3 Pt 1 |
| container_start_page | 030901 |
| container_title | Physical review. E, Statistical, nonlinear, and soft matter physics |
| container_volume | 73 |
| creator | Cisneros, Luis Dombrowski, Christopher Goldstein, Raymond E Kessler, John O |
| description | Recent experiments have shown large-scale dynamic coherence in suspensions of the bacterium B. subtilis, characterized by quorum polarity, collective parallel swimming of cells. To probe mechanisms leading to this, we study the response of individual cells to steric stress, and find that they can reverse swimming direction at spatial constrictions without turning the cell body. The consequences of this propensity to flip the flagella are quantified by measurements of the inward and outward swimming velocities, whose asymptotic values far from the constriction show near perfect symmetry, implying that "forwards" and "backwards" are dynamically indistinguishable, as with E. coli. |
| doi_str_mv | 10.1103/physreve.73.030901 |
| format | Article |
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| ispartof | Physical review. E, Statistical, nonlinear, and soft matter physics, 2006-03, Vol.73 (3 Pt 1), p.030901-030901, Article 030901 |
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| language | eng |
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| source | PROLA; MEDLINE |
| subjects | Bacillus subtilis - cytology Bacillus subtilis - physiology Computer Simulation Flagella - physiology Models, Biological Molecular Motor Proteins - physiology Motion |
| title | Reversal of bacterial locomotion at an obstacle |
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