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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Light as Energy01:35

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The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
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The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
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Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
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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.
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Using light to improve commercial value.

Matthew Alan Jones1

  • 1School of Biological Sciences, University of Essex, Wivenhoe Park, Essex, Colchester, CO4 3SQ UK.

Horticulture Research
|September 6, 2018
PubMed
Summary

Plants adapt their growth based on environmental cues, especially light. Manipulating light quality with LEDs can enhance crop yield and quality by optimizing plant development.

Area of Science:

  • Plant Biology
  • Photomorphogenesis
  • Agricultural Science

Background:

  • Plant morphology is plastic, adapting to environmental conditions to maximize reproductive fitness.
  • Light is a critical environmental signal influencing photosynthesis and development, perceived via distinct photoreceptors.
  • LED technology allows for controlled manipulation of light quality at a commercial scale.

Purpose of the Study:

  • To review how plants perceive and respond to light signals.
  • To explore the potential of manipulating plant light signaling pathways for agricultural benefit.
  • To discuss enhancing crop yield and quality through precise lighting regimes.

Main Methods:

  • Review of scientific literature on plant photobiology and signaling.

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  • Analysis of plant responses to different light wavelengths and intensities.
  • Examination of LED technology applications in controlled agricultural environments.

    • Main Results:

    • Plants exhibit significant developmental plasticity in response to light cues.
    • Specific light wavelengths trigger distinct photoreceptor-mediated signaling pathways.
    • Optimized lighting regimes can influence plant architecture, flowering time, and overall fitness.

    Conclusions:

    • Understanding plant light perception is key to agricultural innovation.
    • Precise control of light quality offers a powerful tool to enhance crop production.
    • Harnessing plant plasticity through tailored lighting can improve yield and quality.