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Related Experiment Videos

Chronic acceleration in plants.

B F Edwards1, S W Gray

  • 1Emory University, Atlanta, Georgia, USA.

Life Sciences and Space Research
|January 1, 1977
PubMed
Summary
This summary is machine-generated.

Hypergravity affects plants significantly, altering growth, cell structure, and even DNA. Higher accelerative forces can inhibit germination and cause cell damage, but some plant cells show resilience.

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Area of Science:

  • Plant biology
  • Cell biology
  • Gravitational biology

Background:

  • Research on hypergravity effects on plants has been limited since 1967.
  • Centrifugation is primarily used for cellular component separation, not as a primary environmental condition.

Purpose of the Study:

  • To review and summarize the reported effects of hypergravity on various plant species and cellular processes.
  • To document the range of accelerative forces and their corresponding biological impacts.

Main Methods:

  • Review of existing literature on hypergravity studies involving plants and microorganisms.
  • Analysis of reported effects across different magnitudes of accelerative forces (g-forces).

Main Results:

Related Experiment Videos

  • 2-25 g: Increased auxin transport, geotropic response, and coleoptile growth.
  • 25-500 g: Reduced coleoptile growth and morphological changes.
  • 1000-2500 g: Increased root formation in willow cuttings.
  • 1000 g+: Cytoplasmic stratification, decreased seed germination.
  • 200-15000 g: Chromosome damage observed.
  • 5000-20000 g: Reversal of algal cell polarity.
  • Above 30000 g: Halts response to gibberellic acid in some cells.
  • 110000 g: Permanent morphologic changes in Escherichia coli.
  • Plant cells demonstrated survival at 176000 g for 20 hours.

    • Conclusions:

    • Hypergravity exerts a dose-dependent influence on plant physiology and morphology.
    • Significant cellular damage and altered biological processes occur at high g-forces, though some organisms exhibit resilience.