Culture pH, CO 2 tension, and cell division in Euglena gracilis Z

• Published in: Journal of Cellular Physiology
• Main Authors: Jones, C. R., Cook, J. R.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1978
• Subjects: Carbonic acid
• Online Access: http://dx.doi.org/10.1002/jcp.1040960214; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjcp.1040960214; https://onlinelibrary.wiley.com/doi/pdf/10.1002/jcp.1040960214

Abstract Growth characteristics of Euglena gracilis Z as functions of culture pH, CO 2 tension, temperature, and lighting regime were investigated. The results are consistent with the possibility that cell division is preceded by a lowered intracellular pH. Also consistent with this possibility is the finding that division rhythmicity can be induced by periodic changes in CO 2 tension. It is suggested that the rhythmicity is induced by changes in intracellular pH produced by carbonic acid.