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  A steering mechanism for phototaxis in Chlamydomonas

Bennett, R. R., & Golestanian, R. (2015). A steering mechanism for phototaxis in Chlamydomonas. Journal of the Royal Society Interface, 12(104): 20141164. doi:10.1098/rsif.2014.1164.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-7632-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-7633-1
Genre: Journal Article

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 Creators:
Bennett, R. R., Author
Golestanian, Ramin1, Author              
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1Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2570692              

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 Abstract: Chlamydomonas shows both positive and negative phototaxis. It has a single eyespot near its equator, and as the cell rotates during the forward motion, the light signal received by the eyespot varies. We use a simple mechanical model of Chlamydomonas that couples the flagellar beat pattern to the light intensity at the eyespot to demonstrate a mechanism for phototactic steering that is consistent with observations. The direction of phototaxis is controlled by a parameter in our model, and the steering mechanism is robust to noise. Our model shows switching between directed phototaxis when the light is on and run-and-tumble behaviour in the dark. © 2015 The Author(s) Published by the Royal Society. All rights reserved.

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Language(s): eng - English
 Dates: 2015-01-142015-03-06
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1098/rsif.2014.1164
BibTex Citekey: Bennett2015
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Title: Journal of the Royal Society Interface
Source Genre: Journal
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Pages: 6 Volume / Issue: 12 (104) Sequence Number: 20141164 Start / End Page: - Identifier: -