Abstract

Chlorella sorokiniana cells grew synehronously under different light-dark changes at temperatures between 30 and 40 °C. The productivity of synchronous cultures (increase in cell number) oscillated when darkness, i.e. waiting time, was added supplementarily after the light-dark cycle. At 31 °C a circadian oscillation in the production of daughter cells (autospores) was detected. At 39 °C the frequency of oscillation in productivity was shortened to about 12 h. The performance of oscillation pattern and its change was revealed to be influenced rather by temperature than by light-dark treatments. The relation between temperature and cPll productivity oseillation was discussed.

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