Affiliation:
1. Research Laboratories, Lockheed Missiles & Space Company, Palo Alto, California
Abstract
Continuously growing cultures of
Chlorella pyrenoidosa
Starr 252, operating at constant density and under constant environmental conditions, produced uniform photosynthetic quotient (PQ = CO
2
/O
2
) and O
2
values during 6 months of observations. The PQ for the entire study was 0.90 ± 0.024. The PQ remained constant over a threefold light-intensity change and a threefold change in O
2
production (0.90 ± 0.019). At low light intensities, when the rate of respiration approached the rate of photosynthesis, the PQ became extremely variable. Six lamps of widely different spectral-energy distribution produced no significant change in the PQ (0.90 ± 0.025). Oxygen production was directly related to the number of quanta available, irrespective of spectral-energy distribution. Such dependability in producing uniform PQ and O
2
values warrants a consideration of algae to maintain a constant gas environment for submarine or spaceship use.
Publisher
American Society for Microbiology
Subject
General Pharmacology, Toxicology and Pharmaceutics,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine
Reference12 articles.
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2 articles.
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