English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Independent Control of the Static and Dynamic Components of the Chlamydomonas Flagellar Beat

Geyer, V. F., Sartori, P., Friedrich, B. M., Jülicher, F., & Howard, J. (2016). Independent Control of the Static and Dynamic Components of the Chlamydomonas Flagellar Beat. Current Biology, 26(8), 1098-1103. doi:10.1016/j.cub.2016.02.053.

Item is

Files

show Files

Locators

show
hide
Description:
-
OA-Status:

Creators

show
hide
 Creators:
Geyer, Veikko F.1, Author
Sartori, Pablo2, Author           
Friedrich, Benjamin M.2, Author           
Jülicher, Frank2, Author           
Howard, Jonathon1, Author
Affiliations:
1external, ou_persistent22              
2Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              

Content

show
hide
Free keywords: -
 MPIPKS: Living matter
 Abstract: When the green alga Chlamydomonas reinhardtii swims, it uses the breaststroke beat of its two flagella to pull itself forward [1]. The flagellar waveform can be decomposed into a static component, corresponding to an asymmetric time-averaged shape, and a dynamic component, corresponding to the time-varying wave [2]. Extreme lightening conditions photoshock the cell, converting the breaststroke beat into a symmetric sperm-like beat, which causes a reversal of the direction of swimming [3]. Waveform conversion is achieved by a reduction in magnitude of the static component, whereas the dynamic component remains unchanged [2]. The coupling between static and dynamic components, however, is poorly understood, and it is not known whether the static component requires the dynamic component or whether it can exist independently. We used isolated and reactivated axonemes [4] to investigate the relation between the two beat components. We discovered that, when reactivated in the presence of low ATP concentrations, axonemes displayed the static beat component in absence of the dynamic component. Furthermore, we found that the amplitudes of the two components depend on ATP in qualitatively different ways. These results show that the decomposition into static and dynamic components is not just a mathematical concept but that the two components can independently control different aspects of cell motility: the static component controls swimming direction, whereas the dynamic component provides propulsion.

Details

show
hide
Language(s):
 Dates: 2016-03-312016-04-25
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.cub.2016.02.053
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Current Biology
  Other : Curr. Biol.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London, UK : Cell Press
Pages: - Volume / Issue: 26 (8) Sequence Number: - Start / End Page: 1098 - 1103 Identifier: ISSN: 0960-9822
CoNE: https://pure.mpg.de/cone/journals/resource/954925579107