LIGHT-INDUCED CHEMOTACTIC REACTIONS IN THE DINOFLAGELLATE, Peridiniopsis berolinensis |
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| Authors: | Maria Häder |
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| Institution: | Fachbereich Biologie der Philipps-Universität Marburg, Karl v. Frisch-Str., D-3550 Marburg 1, W. Germany |
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| Abstract: | Abstract The photosensitizer riboflavin induces accumulation of the colorless flagellate Peridiniopsis berolinensis in a light field at low photon fluence rates but dispersal from a light field at high photon fluence rates. The wavelength dependence of the accumulation resembles the absorption spectrum of riboflavin in the visible range. The photodynamic effects are caused by a positive or negative chemotactic response to photoproducts in the medium which are produced by photochemical reactions of the dye. |
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