How plants tell the time

Curr Opin Plant Biol. 2000 Feb;3(1):43-6. doi: 10.1016/s1369-5266(99)00034-5.


The components of the circadian system that have recently been discovered in plants share some characteristics with those from cyanobacterial, fungal and animal circadian clocks. Light input signals to the clock are contributed by multiple photoreceptors: some of these have now been shown to function specifically in response to light of defined wavelength and fluence rate. New reports of clock-controlled processes and genes are highlighting the importance of time management for plant development.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Arabidopsis / physiology*
  • Arabidopsis Proteins*
  • Biological Clocks / physiology*
  • Circadian Rhythm / physiology*
  • DNA-Binding Proteins / genetics
  • Genes, Plant
  • Transcription Factors / genetics


  • Arabidopsis Proteins
  • CCA1 protein, Arabidopsis
  • DNA-Binding Proteins
  • LHY protein, Arabidopsis
  • Transcription Factors