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Factors affecting division rhythmicity in Euglena gracilis

✍ Scribed by J. R. Cook

Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
617 KB
Volume
84
Category
Article
ISSN
0021-9541

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✦ Synopsis

Abstract

In phototrophic culture of Euglena gracilis, good synchrony was found only under rather restricted programs of light‐dark cycles, and rather narrow ranges of temperature and light intensity, when cultures were flushed with air fortified with adequate amounts of CO~2~. When flushed with air alone, CO~2~ was found to be limiting, and while cell divisions were rhythmic, less than a doubling of cell number occurred in division bursts. With air as gas phase, rhythmic division activity was maintained over wide ranges of temperature, light intensity, and the ratio of light:dark in a given program; all these factors affected the amplitude of the division burst, however.

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