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Related Experiment Videos

Stress and transposable elements: co-evolution or useful parasites?

P Capy1, G Gasperi, C Biémont

  • 1Laboratoire Populations, Génétique et Evolution, CNRS - UPR 9034, 91198 Gif-sur-Yvette Cedex, France. capy@pge.cnrs.gif.fr

Heredity
|September 30, 2000
PubMed
Summary
This summary is machine-generated.

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Stressful conditions can activate transposable elements, generating genetic diversity that aids organism adaptation. This review explores how environmental stresses trigger transposable element activity.

Area of Science:

  • Genetics and Molecular Biology
  • Evolutionary Biology
  • Environmental Stress Response

Background:

  • Transposable elements (TEs), or "jumping genes," are mobile DNA sequences.
  • TE activity can be influenced by environmental and population factors, especially stress.
  • Increased TE mobility generates genetic variation, potentially benefiting organisms under stress.

Purpose of the Study:

  • To review evidence supporting the hypothesis that stress induces transposable element activity.
  • To explore the molecular mechanisms by which stress activates transposable elements.

Main Methods:

  • Review of existing scientific literature on transposable element activity and stress.
  • Analysis of proposed regulatory mechanisms for stress-induced TE activation.

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Main Results:

  • Evidence suggests a correlation between environmental stress and increased transposable element mobility.
  • Hypotheses propose that regulatory elements within TEs, similar to host defense genes, mediate stress induction.

Conclusions:

  • Stress-induced transposable element activity is a significant source of genetic variability.
  • Understanding these mechanisms can provide insights into adaptation and evolution under adverse conditions.