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Related Concept Videos

What is Gene Expression?01:42

What is Gene Expression?

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Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
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What is Gene Expression?01:36

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A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised  of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
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Structure of a Gene01:30

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A gene is the fundamental unit of heredity. Every individual has two copies of each gene, one inherited from each parent. Although most people contain the same genes, there is a small fraction that is slightly different amongst people. A gene with a small difference in its sequence of DNA bases forms different alleles, contributing to different phenotypes.
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Cell Specific Gene Expression01:58

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Cell Specific Gene Expression01:58

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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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Updated: Apr 28, 2026

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
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More light behind gene expression.

Arash Kianianmomeni1

  • 1Department of Cellular and Developmental Biology of Plants, University of Bielefeld, Universitätsstr. 25, D-33615 Bielefeld, Germany.

Trends in Plant Science
|June 15, 2014
PubMed
Summary

Light influences gene expression through photoreceptors, impacting gene abundance. Recent studies reveal light controls gene expression via alternative splicing and translational regulation.

Area of Science:

  • Molecular Biology
  • Genetics
  • Plant Biology

Background:

  • Light is a critical environmental signal regulating numerous biological processes.
  • Gene expression is tightly controlled at multiple levels to ensure proper cellular function.
  • Photoreceptors mediate light responses, influencing gene activity.

Purpose of the Study:

  • To investigate the role of light in regulating gene expression.
  • To elucidate the mechanisms by which light controls gene abundance.
  • To highlight recent findings on post-transcriptional and translational regulation by light.

Main Methods:

  • Genome-wide studies were employed to analyze gene expression patterns.
  • Analysis focused on identifying light-responsive genes.
Keywords:
light-regulated gene expressionphotomorphogenesis

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  • Investigated mechanisms including alternative splicing and translational control.

    • Main Results:

    • Light regulates gene expression at both post-transcriptional and translational levels.
    • Alternative splicing is a key mechanism controlled by light (Wu et al.).
    • Translational regulation is another significant pathway influenced by light (Liu et al.).

    Conclusions:

    • Light acts as a multifaceted regulator of gene expression.
    • Post-transcriptional and translational modifications are crucial for light-mediated gene regulation.
    • Understanding these mechanisms provides insights into plant adaptation and development.