| Night and day morphologies in a planktonic dinoflagellate. | |
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MedLine Citation:
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PMID: 19577958 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We describe remarkable diurnal changes in the morphology of the planktonic dinoflagellate Ceratium ranipes. The species is distinguished by the unusual appendages, known as toes or fingers, protruding from its horns. Varieties have been described based on the characteristics of the fingers. We discovered that cultures, maintained on a 12:12 photoperiod, when examined during the dark period were composed of 'finger-less' cells. Monitoring of isolated cells revealed a diurnal cycle of distinct changes in morphology with daytime cells showing appendages, well-stocked with chlorophyll, and the absence of the fingers at the end of the photoperiod. Fingers are absorbed at the end of the light period and re-grown at the end of the dark period. Sampling the Bay of Villefranche, we found the distinct morphologies in a natural population at night and during the day. |
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Authors:
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Marie-Dominique Pizay; Rodolphe Lem??e; Natalie Simon; Anne-Lise Cras; Jean-Pierre Laugier; John R Dolan |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-07-04 |
Journal Detail:
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Title: Protist Volume: 160 ISSN: 1618-0941 ISO Abbreviation: Protist Publication Date: 2009 Nov |
Date Detail:
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Created Date: 2009-10-20 Completed Date: 2010-02-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9806488 Medline TA: Protist Country: Germany |
Other Details:
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Languages: eng Pagination: 565-75 Citation Subset: IM |
Affiliation:
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Microbial Ecology and Biogeochemistry, Laboratoire d'Oc??anographie de Villefranche, UMR 7093 CNRS Universit?? Paris6, Station Zoologique, B.P. 28, Observatoire Oc??anologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Circadian Rhythm* Dinoflagellida / cytology*, physiology* Microscopy Microscopy, Electron, Scanning Microscopy, Fluorescence Microscopy, Video Organelles / physiology* |
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