Ueki, Noriko; Matsunaga, S.; Inouye, I.; Hallmann, Armin: How 5000 independent rowers coordinate their strokes in order to row into the sunlight: Phototaxis in the multicellular green alga Volvox. In: BMC Biology. Jg.8 H. 1. 2010
Inhalt
- Results
- Phylogenetic analysis of Volvox rousseletii strain MI01
- Polarity of the V. rousseletii spheroid
- Efficiency of phototactic movements as a function of light intensity
- Efficiency of phototactic movements after a longer dark period
- Swimming speed after a dark-light switch as a function of light intensity
- Swimming speed after light stimulation as a function of the swimming direction
- Fluid streamlines before and after a dark-light switch
- Flagellar strokes and flagellar waveforms before and after light stimulation
- Simulation of phototactic swimming with a periodically changing light intensity due to the rotation of the spheroid
- Reaction time after light stimulation
- Discussion
- Light-induced reversal of the ciliary-type beating in Volvox rousseletii
- Gravity facilitates positive phototaxis
- Previous models on organismal steering in the genus Volvox
- Mechanisms for phototactic steering in Volvox rousseletii: A model
- Conclusions
- Methods
- Strain and culture conditions
- Analysis of photomovements and tracking of Volvox spheroids
- Recording of fluid streamlines
- Construction and use of a rotating filter system for pulsed light stimulation
- Analysis of flagellar waveforms
- Analysis of eyespot sizes
- Acknowledgements
- Author details
- Authors' contributions
- References