Circadian Regulation of Horticultural Traits: Integration of Environmental Signals

Book ch
Horticultural Reviews
  • Volumen: 41
  • Fecha: 18 November 2013
  • Páginas: 1-46
  • ISBN: 9781118707418
  • Source Type: Book
  • DOI: 10.1002/9781118707418.ch01
  • Document Type: Chapter
  • Publisher: Wiley Blackwell
© 2013 by Wiley-Blackwell. All rights reserved.Plants, animals, and fungi have evolved to contain an internal physiological clock that responds to external stimulus such as the light/dark cycles created by the rotation of the Earth. This pacer is known as the circadian clock. It is composed of a complex set of genes that is conserved in higher plants. Originally thought to be a mere coordinator of basic processes, research has shown that the clock plays a key role in aspects as important as flowering time, productivity, tuberization, and dormancy. Its functions are all related to the seasonal development in many crops. But the circadian clock intimately controls other biological processes such as adaptation to cold, pathogen resistance, stomatal movement, and scent production. Most of the knowledge about the plant circadian clock has been established by research on Arabidopsis but the apparent conservation of the circadian clock components in cereals, trees, and floriculture crops means that the circadian clock may influence many agriculturally relevant traits such as flowering, dormancy, productivity, or fruit and flower aromas.

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