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Nat Rev Mol Cell Biol. 2003 Apr;4(4):265-75.

Living by the calendar: how plants know when to flower.

Author information

  • 1Department of Cell Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037 USA.


Reproductive processes in plants and animals are usually synchronized with favourable seasons of the year. It has been known for 80 years that organisms anticipate seasonal changes by adjusting developmental programmes in response to daylength. Recent studies indicate that plants perceive daylength through the degree of coincidence of light with the expression of CONSTANS, which encodes a clock-regulated transcription factor that controls the expression of floral-inductive genes in a light-dependent manner.

[PubMed - indexed for MEDLINE]
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