Document Detail

Circadian clock-regulated physiological outputs: dynamic responses in nature.
MedLine Citation:
PMID:  23435352     Owner:  NLM     Status:  MEDLINE    
The plant circadian clock is involved in the regulation of numerous processes. It serves as a timekeeper to ensure that the onset of key developmental events coincides with the appropriate conditions. Although internal oscillating clock mechanisms likely evolved in response to the earth's predictable day and night cycles, organisms must integrate a range of external and internal cues to adjust development and physiology. Here we introduce three different clock outputs to illustrate the complexity of clock control. Clock-regulated diurnal growth is altered by environmental stimuli. The complexity of the photoperiodic flowering pathway highlights numerous nodes through which plants may integrate information to modulate the timing of flowering. Comparative analyses among ecotypes that differ in flowering response reveal additional environmental cues and molecular processes that have developed to influence flowering. We also explore the process of cold acclimation, where circadian inputs, light quality, and stress responses converge to improve freezing tolerance in anticipation of colder temperatures.
Hannah A Kinmonth-Schultz; Greg S Golembeski; Takato Imaizumi
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Review     Date:  2013-02-20
Journal Detail:
Title:  Seminars in cell & developmental biology     Volume:  24     ISSN:  1096-3634     ISO Abbreviation:  Semin. Cell Dev. Biol.     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-06-21     Completed Date:  2014-01-16     Revised Date:  2014-05-07    
Medline Journal Info:
Nlm Unique ID:  9607332     Medline TA:  Semin Cell Dev Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  407-13     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 Elsevier Ltd. All rights reserved.
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MeSH Terms
Adaptation, Physiological
Arabidopsis / physiology*
Arabidopsis Proteins / genetics*,  metabolism
Circadian Clocks / physiology*
Circadian Rhythm / physiology*
Cold Temperature
Flowers / physiology*
Gene Expression Regulation, Plant*
Signal Transduction
Grant Support
Reg. No./Substance:
0/Arabidopsis Proteins

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