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Phototactic responses of Chlamydomonas reinhardtii in electric fields
Dept of Plant Physiology, Univ. of Lund.
1988 (English)In: Physiologia Plantarum: An International Journal for Plant Biology, ISSN 0031-9317, Vol. 73, 265-270 p.Article in journal (Refereed) Published
Abstract [en]

Chlamydomonas reinhardtii Dangeard strain Göttingen 11 – 32(+) responds both phototactically and galvanotactically. If electric fields and a light stimulus of 496 nm were applied simultaneously, phototaxis persisted but the response was modified. Field lines perpendicular to the phototactic direction of movement inhibited phototaxis. If the field lines were parallel to the light direction, the effect depended on the position of the poles. When the cathode faced the light, an increase of the phototactic reaction values was observed. In this case electric fields enhanced positive phototaxis with increasing voltages from 3 V up to 12 V. If the cathode was on the opposite side, positive phototactic movement was inhibited. The maximum inhibition was found at 12 V. At this voltage positive phototaxis was measured neither at low nor at high fluence rates, and positive phototaxis was shown only between 0.1 and 1.5 W m−1.

Place, publisher, year, edition, pages
1988. Vol. 73, 265-270 p.
Keyword [en]
phototaxis
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:miun:diva-7549DOI: 10.1111/j.1399-3054.1988.tb00596.xOAI: oai:DiVA.org:miun-7549DiVA: diva2:127699
Available from: 2008-12-10 Created: 2008-12-09 Last updated: 2009-11-18Bibliographically approved

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Ekelund, Nils
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CiteExportLink to record
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