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Related Concept Videos

Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
Cell Signaling in Plants01:25

Cell Signaling in Plants

Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Channel Rhodopsins01:11

Channel Rhodopsins

Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
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Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
Some signaling systems generate...
Global Regulatory Systems01:28

Global Regulatory Systems

Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...

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Updated: May 25, 2026

An Optogenetic Method to Control and Analyze Gene Expression Patterns in Cell-to-cell Interactions
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Published on: March 22, 2018

Green light signaling and adaptive response.

Tingting Zhang1, Kevin M Folta

  • 1Horticultural Sciences Department, University of Florida, Gainesville, FL, USA.

Plant Signaling & Behavior
|February 4, 2012
PubMed
Summary

Plants use green light, not just for energy, but also for environmental sensing. This light influences plant development and gene expression, often opposing responses to blue and red light.

Area of Science:

  • Plant biology
  • Photobiology
  • Plant physiology

Background:

  • Plants perceive sunlight not only as energy for photosynthesis but also as crucial environmental information.
  • Light quality, including spectral profiles, influences plant form and physiology through gene expression.
  • While blue, red, and far-red light effects are well-studied, green light's role is increasingly recognized.

Purpose of the Study:

  • To investigate the biological effects of green light on plant adaptive responses.
  • To understand the mechanisms underlying green light perception, including cryptochrome involvement.
  • To explore green light's role in sensing environmental conditions like shade.

Main Methods:

  • Analysis of plant responses to varying light spectra, focusing on green light (500-565 nm).

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Electrophysiological Method for Recording Intracellular Voltage Responses of Drosophila Photoreceptors and Interneurons to Light Stimuli In Vivo
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  • Investigating the involvement of cryptochrome blue light receptors in green light signaling.
  • Comparing green light-induced responses with those triggered by blue, red, and far-red light.

    • Main Results:

    • Green light elicits specific plant adaptive responses, including effects on stem growth, anthocyanin accumulation, and chloroplast gene expression.
    • These responses can be mediated by, or independent of, cryptochrome blue light receptors.
    • Green light signaling plays a role in shade avoidance, distinct from far-red light-mediated responses.

    Conclusions:

    • Green light is a significant signal for plants, influencing development and physiology.
    • Plants utilize green light to modulate gene expression and adapt to ambient light conditions.
    • Green light perception offers a unique pathway for plants to sense their environment, complementing other light signaling pathways.