GROWTH OF CHLORELLA SOROKINIANA AT HYPERBARIC OXYGEN PRESSURES

Abstract

The growth rate of the oxygen tolerant strain (OTS) of Chlorella sorokiniana decreases in a linear fashion as the partial pressure of oxygen is increased from 711 to 1478 mm Hg. Under two atmospheres of oxygen pressure growth ceases after 10 to 12 hours. This cessation of growth is not due to any permanent injury, as growth is resumed when oxygen partial pressure is reduced to ambient levels. The inhibition occurs under both autotrophic and heterotrophic growth conditions and is not accompanied by an increase in cell size. The results indicate that the tolerance of OTS cells to elevated oxygen pressures is not an absolute immunity, and that inhibition of growth at very high oxygen pressures cannot be accounted for by an inhibition of photosynthesis alone.

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Document Details

Document Type
Technical Report
Publication Date
Jul 30, 1968
Accession Number
AD0705716

Entities

People

  • Billy E. Welch
  • Billy Richardson
  • Fred W. Wagner

Organizations

  • United States Air Force School of Aerospace Medicine

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Aerospace Medicine
  • Air Force
  • Air Force Facilities
  • Algae
  • Atmospheres
  • Cell Size
  • Cells
  • Chambers
  • Classification
  • Contractors
  • Contracts
  • Determinants (Mathematics)
  • Inhibition
  • Partial Pressure
  • Photosynthesis
  • Security
  • Toxicity

Readers

  • Breast cancer cell signaling and growth regulation.
  • Materials Science
  • Thermal Physics or Thermal Science.