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Related Concept Videos

Light as Energy01:35

Light as Energy

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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.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
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Photosystem II01:22

Photosystem II

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The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across  two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
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Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

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Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
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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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Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

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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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UV–Vis Spectroscopy of Conjugated Systems01:32

UV–Vis Spectroscopy of Conjugated Systems

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Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π → π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
One of the factors influencing λmax is the extent of conjugation in...
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Updated: Nov 1, 2025

Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses
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Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses

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Photosynthesis: a multiscopic view.

Jeffrey A Cruz1,2, Thomas J Avenson3

  • 1Plant Research Laboratories, Michigan State University, 612 Wilson Road, MI, S-206, Lansing, USA. cruzj@msu.edu.

Journal of Plant Research
|June 25, 2021
PubMed
Summary
This summary is machine-generated.

Researchers are moving photosynthesis studies from the lab to the field. This shift aims to improve crop performance and food security using advanced measurement techniques for better crop management.

Keywords:
Chlorophyll a fluorescenceGas exchangeIn vivo spectroscopyPhotosynthesis

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Area of Science:

  • Plant biology
  • Biochemistry
  • Agricultural science

Background:

  • Photosynthesis research traditionally focused on individual components.
  • Understanding the whole system requires integrating these component-specific studies.
  • Recent global challenges necessitate applied research in photosynthesis.

Purpose of the Study:

  • To review the transition of photosynthesis research methods from laboratory to field settings.
  • To highlight recent advancements in applied photosynthesis research.
  • To identify future research directions for improving crop performance and sustainability.

Main Methods:

  • Review of existing literature on photosynthesis research methodologies.
  • Analysis of techniques applied in both controlled laboratory and field environments.
  • Discussion of emerging technologies for in-situ photosynthetic measurements.

Main Results:

  • Significant progress has been made in adapting laboratory techniques for field-based photosynthesis studies.
  • Field-based phenotyping using photosynthesis measurements is increasingly valuable for crop breeding and management.
  • New approaches are enabling more comprehensive and integrated understanding of photosynthetic processes.

Conclusions:

  • The migration of photosynthesis research to field environments is crucial for addressing food security and renewable energy needs.
  • Further development of field-deployable tools will enhance the impact of applied photosynthesis research.
  • Integrated approaches are key to optimizing photosynthetic efficiency for local and global benefits.