Flagellar synchronization through direct hydrodynamic interactions
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, ar...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
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eLife Sciences Publications, Ltd
2018
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| Online Access: | http://hdl.handle.net/1721.1/116678 https://orcid.org/0000-0003-0587-0251 |
| _version_ | 1826213783053271040 |
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| author | Wan, Kirsty Y Polin, Marco Goldstein, Raymond E Brumley, Douglas Richard |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Wan, Kirsty Y Polin, Marco Goldstein, Raymond E Brumley, Douglas Richard |
| author_sort | Wan, Kirsty Y |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T15:54:45Z |
| format | Article |
| id | mit-1721.1/116678 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:54:45Z |
| publishDate | 2018 |
| publisher | eLife Sciences Publications, Ltd |
| record_format | dspace |
| spelling | mit-1721.1/1166782022-10-02T05:01:30Z Flagellar synchronization through direct hydrodynamic interactions Wan, Kirsty Y Polin, Marco Goldstein, Raymond E Brumley, Douglas Richard Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Brumley, Douglas Richard 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. 2018-06-28T17:08:20Z 2018-06-28T17:08:20Z 2014-07 2014-03 2018-06-27T16:25:31Z Article http://purl.org/eprint/type/JournalArticle 2050-084X http://hdl.handle.net/1721.1/116678 Brumley, Douglas R. et al. “Flagellar Synchronization through Direct Hydrodynamic Interactions.” eLife 3 (July 2014): e02750 © 2014 Brumley et al https://orcid.org/0000-0003-0587-0251 http://dx.doi.org/10.7554/eLife.02750 eLife Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf eLife Sciences Publications, Ltd eLife |
| spellingShingle | Wan, Kirsty Y Polin, Marco Goldstein, Raymond E Brumley, Douglas Richard Flagellar synchronization through direct hydrodynamic interactions |
| title | Flagellar synchronization through direct hydrodynamic interactions |
| title_full | Flagellar synchronization through direct hydrodynamic interactions |
| title_fullStr | Flagellar synchronization through direct hydrodynamic interactions |
| title_full_unstemmed | Flagellar synchronization through direct hydrodynamic interactions |
| title_short | Flagellar synchronization through direct hydrodynamic interactions |
| title_sort | flagellar synchronization through direct hydrodynamic interactions |
| url | http://hdl.handle.net/1721.1/116678 https://orcid.org/0000-0003-0587-0251 |
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