Circadian clock (plants)
Cook, Roger I. Department of Biological Sciences, University of Warwick, Coventry, United Kingdom.
Millar, Andrew J. Department of Biological Sciences, University of Warwick, Coventry, United Kingdom.
Last reviewed:December 2019
- Circadian systems
- Plant rhythms
- Related Primary Literature
- Additional Reading
A self-sustained cycle of physiological changes occurring over an approximately 24-h period, generally synchronized to light–dark cycles in the environment of an organism. Circadian clocks or systems are natural phenomena whereby the biological functions of organisms are synchronized with the day–night cycle of their environment, allowing biological processes to anticipate environmental changes. This is thought to provide organisms with an adaptive advantage and is present in plants, animals, fungi and cyanobacteria. The focus of this article is on circadian clocks in plants. See also: Biological clocks; Photoperiodism; Plant physiology
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