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Phototaxis in Euglena 11: Biochemical Aspects

  • G. Tollin

Abstract

Phototaxis can be defined as a translational response of a freely moving organism to a light stimulus. In the alga Euglena, a sensory perception system is involved which is an easily recognized structure consisting of an eyespot (or stigma) and the paraflagellar swelling located at the base of the flagellum (Tollin, 1969). These organelles, functioning as a photosensitive device, allow the cell to become oriented with respect to the direction of a light source and to maintain its swimming motion in that direction. The physical mechanism by which this is accomplished is the subject of another paper to be presented at this symposium (Diehn, 1970 a) and thus will not be considered further here.

Keywords

Photosynthetic System Petroleum Fraction Ether Phototactic Response Blue Light Irradiation Methyl Octanoate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Company Ltd. 1973

Authors and Affiliations

  • G. Tollin
    • 1
  1. 1.Department of ChemistryThe University of ArizonaTucsonUSA

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