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Chlamydomonas swims with two "gears" in a eukaryotic version of run-and-tumble locomotion
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Polin, Marco, Tuval, I., Drescher, K., Gollub, J. P. and Goldstein, R. E. (2009) Chlamydomonas swims with two "gears" in a eukaryotic version of run-and-tumble locomotion. Science, Volume 325 (Number 5939). pp. 487-490. doi:10.1126/science.1172667 ISSN 0036-8075.
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Official URL: http://dx.doi.org/10.1126/science.1172667
Abstract
The coordination of eukaryotic flagella is essential for many of the most basic processes of life (motility, sensing, and development), yet its emergence and regulation and its connection to locomotion are poorly understood. Previous studies show that the unicellular alga Chlamydomonas, widely regarded as an ideal system in which to study flagellar biology, swims forward by the synchronous action of its two flagella. Using high-speed imaging over long intervals, we found a richer behavior: A cell swimming in the dark stochastically switches between synchronous and asynchronous flagellar beating. Three-dimensional tracking shows that these regimes lead, respectively, to nearly straight swimming and to abrupt large reorientations, which yield a eukaryotic version of the "run-and-tumble" motion of peritrichously flagellated bacteria.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Science | ||||
Publisher: | American Association for the Advancement of Science | ||||
ISSN: | 0036-8075 | ||||
Official Date: | 24 July 2009 | ||||
Dates: |
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Volume: | Volume 325 | ||||
Number: | Number 5939 | ||||
Page Range: | pp. 487-490 | ||||
DOI: | 10.1126/science.1172667 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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