| Circadian and solar clocks interact in seasonal flowering. | |
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MedLine Citation:
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PMID: 19795408 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The plant maintains a 24-h circadian cycle that controls the sequential activation of many physiological and developmental functions. There is empirical evidence suggesting that two types of circadian rhythms exist. Some plant rhythms appear to be set by the light transition at dawn, and are calibrated to circadian (zeitgeber) time, which is measured from sunrise. Other rhythms are set by both dawn and dusk, and are calibrated to solar time that is measured from mid-day. Rhythms on circadian timing shift seasonally in tandem with the timing of dawn that occurs earlier in summer and later in winter. On the other hand, rhythms set to solar time are maintained independently of the season, the timing of noon being constant year-round. Various rhythms that run in-phase and out-of-phase with one another seasonally may provide a means to time and induce seasonal events such as flowering. |
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Authors:
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Hoong-Yeet Yeang |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: BioEssays : news and reviews in molecular, cellular and developmental biology Volume: 31 ISSN: 1521-1878 ISO Abbreviation: Bioessays Publication Date: 2009 Nov |
Date Detail:
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Created Date: 2009-10-27 Completed Date: 2010-01-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8510851 Medline TA: Bioessays Country: United States |
Other Details:
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Languages: eng Pagination: 1211-8 Citation Subset: IM |
Affiliation:
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Bukit Bandar Raya, Kuala Lumpur, Malaysia. yeanghy@gmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Arabidopsis
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genetics Biological Clocks Circadian Rhythm* Flowers* Genes, Plant Light Models, Biological Oscillometry / methods Photoperiod Seasons Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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