| Cycles, phase synchronization, and entrainment in single-species phytoplankton populations. | |
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MedLine Citation:
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PMID: 20160096 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Complex dynamics, such as population cycles, can arise when the individual members of a population become synchronized. However, it is an open question how readily and through which mechanisms synchronization-driven cycles can occur in unstructured microbial populations. In experimental chemostats we studied large populations (>10(9) cells) of unicellular phytoplankton that displayed regular, inducible and reproducible population oscillations. Measurements of cell size distributions revealed that progression through the mitotic cycle was synchronized with the population cycles. A mathematical model that accounts for both the cell cycle and population-level processes suggests that cycles occur because individual cells become synchronized by interacting with one another through their common nutrient pool. An external perturbation by direct manipulation of the nutrient availability resulted in phase resetting, unmasking intrinsic oscillations and producing a transient collective cycle as the individuals gradually drift apart. Our study indicates a strong connection between complex within-cell processes and population dynamics, where synchronized cell cycles of unicellular phytoplankton provide sufficient population structure to cause small-amplitude oscillations at the population level. |
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Authors:
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Thomas M Massie; Bernd Blasius; Guntram Weithoff; Ursula Gaedke; Gregor F Fussmann |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-02-16 |
Journal Detail:
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Title: Proceedings of the National Academy of Sciences of the United States of America Volume: 107 ISSN: 1091-6490 ISO Abbreviation: Proc. Natl. Acad. Sci. U.S.A. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-03 Completed Date: 2010-04-16 Revised Date: 2010-09-03 |
Medline Journal Info:
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Nlm Unique ID: 7505876 Medline TA: Proc Natl Acad Sci U S A Country: United States |
Other Details:
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Languages: eng Pagination: 4236-41 Citation Subset: IM |
Affiliation:
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Institute for Biochemistry and Biology, University of Potsdam, 14469 Potsdam, Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Cell Cycle* Phytoplankton / cytology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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