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Light control of plant development

C Fankhauser1, J Chory

  • 1Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA.

Annual Review of Cell and Developmental Biology
|January 1, 1997
PubMed
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Plants use sophisticated photoreceptor systems to sense light, enabling crucial growth and development responses. Research in Arabidopsis is advancing our understanding of these light signal transduction networks.

Area of Science:

  • Plant biology
  • Photobiology
  • Molecular genetics

Background:

  • Organisms require environmental cues like light for optimal growth and development.
  • Plants, being photosynthetic and non-motile, exhibit significant plasticity in response to light.
  • Diverse plant light responses necessitate sensing light intensity, direction, duration, and wavelength.

Purpose of the Study:

  • To identify plant photoreceptor systems responsible for sensing light.
  • To investigate the signal transduction pathways mediating plant responses to light.
  • To dissect the molecular and morphological outcomes of light perception in plants.

Main Methods:

  • Utilizing action spectra assays to identify photoreceptors across different spectral ranges (red/far-red, blue/near-ultraviolet, ultraviolet).

Related Experiment Videos

  • Employing molecular genetic studies in the model plant Arabidopsis thaliana.
  • Analyzing signal transduction elements interacting with photoreceptors.

    • Main Results:

    • Identification of three primary photoreceptor systems based on their light absorption spectra.
    • Progress in understanding the functions of photoreceptors and their roles in signal transduction.
    • Elucidation of terminal response pathways and intervening signal transduction components.

    Conclusions:

    • Plant responses to light are mediated by distinct photoreceptor systems.
    • Molecular genetic approaches in Arabidopsis have significantly advanced the understanding of light signaling networks.
    • Further research is needed to fully map the complete light signal transduction cascade.