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Flagellar synchronization through direct hydrodynamic interactions
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Brumley, Douglas R., Wan, Kirsty Y., Polin, Marco and Goldstein, Raymond E. (2014) Flagellar synchronization through direct hydrodynamic interactions. eLife, Volume 3 . Article number e02750. doi:10.7554/eLife.02750 ISSN 2050-084X.
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Official URL: http://doi.org/10.7554/eLife.02750
Abstract
Flows generated by ensembles of flagella are crucial to development, motility and sensing, but the mechanisms behind this striking coordination remain unclear. We present novel experiments in which two micropipette-held somatic cells of Volvox carteri, with distinct intrinsic beating frequencies, are studied by high-speed imaging as a function of their separation and orientation. Analysis of time series shows that the interflagellar coupling, constrained by lack of connections between cells to be hydrodynamical, exhibits a spatial dependence consistent with theory. At close spacings it produces robust synchrony for thousands of beats, while at increasing separations synchrony is degraded by stochastic processes. Manipulation of the relative flagellar orientation reveals in-phase and antiphase states, consistent with dynamical theories. Flagellar tracking with exquisite precision reveals waveform changes that result from hydrodynamic coupling. This study proves unequivocally that flagella coupled solely through a fluid can achieve robust synchrony despite differences in their intrinsic properties.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QR Microbiology | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
Library of Congress Subject Headings (LCSH): | Flagella (Microbiology) | ||||||||
Journal or Publication Title: | eLife | ||||||||
Publisher: | eLife Sciences Publications Ltd. | ||||||||
ISSN: | 2050-084X | ||||||||
Official Date: | 29 July 2014 | ||||||||
Dates: |
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Volume: | Volume 3 | ||||||||
Article Number: | Article number e02750 | ||||||||
DOI: | 10.7554/eLife.02750 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 28 July 2016 | ||||||||
Date of first compliant Open Access: | 28 July 2016 | ||||||||
Funder: | European Research Council (ERC), Wellcome Trust (London, England), Engineering and Physical Sciences Research Council (EPSRC), International Human Frontier Science Program Organization | ||||||||
Grant number: | 247333 (ERC) | ||||||||
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