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Related Experiment Videos

Is gravity a morphological determinant in plants at the cellular level?

A D Krikorian1, F C Steward

  • 1Department of Biology, State University of New York, Stony Brook, New York, USA.

Life Sciences and Space Research
|January 1, 1979
PubMed
Summary

Plant development in space is largely unknown. Carrot somatic embryos developed normally in near-weightlessness, suggesting plants can reproduce in space, though further research is needed.

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Area of Science:

  • Plant biology
  • Space biology
  • Developmental biology

Background:

  • Plants evolved in Earth's gravity, and their development in near-weightlessness is not fully understood.
  • Previous research focused on geotropism in established plant organs, not early development from single cells.
  • The ability of plants to undergo normal embryogenesis and development from single cells in microgravity remains a critical question.

Purpose of the Study:

  • To investigate the development of carrot embryos from cultured somatic cells under near-weightless conditions.
  • To determine if plants can initiate organogenesis and proceed through early developmental stages in space.
  • To assess the feasibility of plant reproduction and development in microgravity environments.

Main Methods:

  • Cultured somatic cells from carrots were used to induce embryogenesis.
  • These embryos were subjected to near-weightless conditions during space flight.
  • Developmental stages, including organ initiation, were monitored.

Main Results:

  • Space flight did not adversely affect the induction of somatic embryos from cultured carrot cells.
  • The initiation of shoot and root organs in these embryos proceeded normally under near-weightless conditions.
  • The study provides initial evidence that plant embryogenesis can occur in space.

Conclusions:

  • Plant somatic embryogenesis and early organ development appear to be viable in near-weightless environments.
  • The findings suggest that plants may be capable of reproduction and development through consecutive generations in space.
  • Further research and alternative systems are needed to fully resolve remaining questions about plant development in space.

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