Document Detail

Downstream of the plant circadian clock: output pathways for the control of physiology and development.
MedLine Citation:
PMID:  21819384     Owner:  NLM     Status:  In-Data-Review    
The plant circadian clock controls many aspects of growth and development, allowing an individual to adapt its physiology and metabolism in anticipation of diurnal and seasonal environmental changes. Circadian regulation of hormone levels and hormonal signalling modulates many features of development, including daily growth patterns and the breaking of seed dormancy. The clock also plays a role in seasonal day-length perception, allowing plants to optimally time key development transitions, such as reproduction. Moreover, the clock restricts (gates) the sensitivity of a plant's response to environmental cues, such as light and stress, to specific times of the day, ensuring that the plant can distinguish between normal fluctuations and longer-term changes. The central oscillator controls many of these output pathways via rhythmic gene expression, with several of the core clock components encoding transcription factors. Post-transcriptional processes are also likely to make an important contribution to the circadian regulation of output pathways. The plant circadian clock plays a role in regulating fitness, hybrid vigour and numerous stress responses. Thus elucidating the complexities of the circadian output mechanisms and their regulation may provide new avenues for crop enhancement.
Sally Adams; Isabelle A Carré
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Essays in biochemistry     Volume:  49     ISSN:  1744-1358     ISO Abbreviation:  Essays Biochem.     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-08-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0043306     Medline TA:  Essays Biochem     Country:  England    
Other Details:
Languages:  eng     Pagination:  53-69     Citation Subset:  IM    
Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, U.K.
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