Axonemal activity relative to the 2D/3D-waveform conversion of the flagellum

Cell Motility and the Cytoskeleton
Christian Cibert

Abstract

The waveform of the flagellum of the sea urchin spermatozoon is mainly planar, but its 3D-properties were evoked for dynamic reasons and described as helical. In 1975, the apparent twisting pattern of the sea urchin axoneme was described [Gibbons I. 1975. The molecular basis of flagellar motility in sea urchin spermatozoa. In: Inoué S, Stephens R, editors. Molecular and cellular movement. New York: Raven Press, p. 207-232.] and was considered to be one of the main elements involved in axonemal behaviour. Recently, planar, quasi-planar, and helical waveforms were observed when the flagellum of sea urchin sperm cells was submitted to an increase in viscosity. The quasi-planar conformation seemed to be due to the alternating torsion of the inter-bend segments [Woolley D, Vernon G. 2001. A study of helical and planar waves on sea urchin sperm flagella, with a theory of how they are generated. J. Exp. Biol. 204:1333-1345]. These three waveforms, which are due to a change in axonemal activity, are possibly used by the sperm cells to adapt their movement to variations in the physico-chemical characteristics of the medium (seawater) in which the cells normally swim. We constructed a simple model to describe qualitatively the central sh...Continue Reading

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Citations

Apr 13, 2010·Journal of Theoretical Biology·Christian CibertGuy Bonnet
Sep 16, 2004·Cell Motility and the Cytoskeleton·Christian Cibert, Jean-Vivien Heck
Feb 26, 2003·Cell Motility and the Cytoskeleton·Christian Cibert
Jun 6, 2007·Cell Motility and the Cytoskeleton·Catarina GadelhaKeith Gull
Oct 24, 2006·Biochemical and Biophysical Research Communications·C LiA Mioduchowski
Apr 13, 2013·Bioinspiration & Biomimetics·Christian Cibert
Sep 30, 2016·Bioinspiration & Biomimetics·Christian Cibert

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