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Plant cells in vitro under altered gravity.

D O Klymchuk1

  • 1Institute of Botany, National Academy of Sciences of Ukraine, Kyiv.

Journal of Gravitational Physiology : a Journal of the International Society for Gravitational Physiology
|September 7, 2001
PubMed
Summary

Plant cell metabolism is sensitive to gravity. Experiments show altered growth and cell proliferation in microgravity, with changes in organelle structure and function.

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Area of Science:

  • Plant biology
  • Cellular metabolism
  • Gravitational biology

Background:

  • Understanding gravity's role in plant cell metabolism is crucial.
  • Plant cells and tissues in vitro serve as valuable models for studying gravity's effects.
  • Disrupted intercellular relations in vitro models help elucidate gravity's role and correlative relationships in intact organisms.

Purpose of the Study:

  • To investigate the growth aspects of cultured plant cells in microgravity and clinostat conditions.
  • To analyze how gravity regulates the metabolism of individual plant cells.
  • To identify aspects requiring further analysis in gravitational plant biology.

Main Methods:

  • Utilizing space and clinostat experiments with plant cells in vitro.
  • Comparing biomass production and cell proliferation in spaceflight samples versus ground controls.
  • Analyzing ultrastructural arrangements, particularly mitochondria and plastids, in response to altered gravity.

Main Results:

  • Plant cell metabolism is sensitive to the g-environment.
  • Most experiments showed decreased biomass production and cell proliferation in spaceflight samples.
  • Some studies reported increased biomass production, while differentiation processes showed similarities between microgravity and ground controls.

Conclusions:

  • Altered gravity affects plant cell metabolism, organelle structure, and function.
  • Changes in lipid peroxidation and malonic dialdehyde content suggest modifications in membrane structural-functional state.
  • Further research is needed to fully understand the growth aspects of cultured cells in microgravity and clinostat conditions.

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