Document Detail

The circadian clock has transient plasticity of period and is required for timing of nocturnal processes in Arabidopsis.
MedLine Citation:
PMID:  24102325     Owner:  NLM     Status:  MEDLINE    
A circadian rhythm matched to the phase and period of the day-night cycle has measurable benefits for land plants. We assessed the contribution of circadian period to the phasing of cellular events with the light : dark cycle. We also investigated the plasticity of circadian period within the Arabidopsis circadian oscillator. We monitored the circadian oscillator in wild-type and circadian period mutants under light : dark cycles of varying total duration. We also investigated changes in oscillator dynamics during and after the transition from light : dark cycles to free running conditions. Under light : dark cycles, dawn and dusk were anticipated differently when the circadian period was not resonant with the environmental period ('T cycle'). Entrainment to T cycles differing from the free-running period caused a short-term alteration in oscillator period. The transient plasticity of period was described by existing mathematical models of the Arabidopsis circadian network. We conclude that a circadian period resonant with the period of the environment is particularly important for anticipation of dawn and the timing of nocturnal events; and there is short-term and transient plasticity of period of the Arabidopsis circadian network.
Antony N Dodd; Neil Dalchau; Michael J Gardner; Seong-Jin Baek; Alex A R Webb
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2013-09-17
Journal Detail:
Title:  The New phytologist     Volume:  201     ISSN:  1469-8137     ISO Abbreviation:  New Phytol.     Publication Date:  2014 Jan 
Date Detail:
Created Date:  2013-11-26     Completed Date:  2014-07-07     Revised Date:  2014-09-24    
Medline Journal Info:
Nlm Unique ID:  9882884     Medline TA:  New Phytol     Country:  England    
Other Details:
Languages:  eng     Pagination:  168-79     Citation Subset:  IM    
Copyright Information:
© 2013 The Authors. New Phytologist © 2013 New Phytologist Trust.
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MeSH Terms
Arabidopsis / genetics,  metabolism,  physiology*
Circadian Clocks* / genetics
Circadian Rhythm* / genetics
Genes, Plant
Plant Physiological Processes* / genetics
Grant Support
BB/I005811/1//Biotechnology and Biological Sciences Research Council; BB/I005811/2//Biotechnology and Biological Sciences Research Council

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