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Journal of Cell Science, Vol 89, Issue 3 397-403, Copyright © 1988 by Company of Biologists

JOURNAL ARTICLES

Tubulin gene expression in the Chlamydomonas reinhardtii cell cycle: elimination of environmentally induced artifacts and the measurement of tubulin mRNA levels

DS Nicholl, JA Schloss and PC John
Department of Biology, Paisley College of Technology, Scotland.

To investigate the involvement of tubulin gene expression in controlling cell division events in Chlamydomonas reinhardtii we have measured tubulin mRNA levels during the cell cycle under different environmental conditions. In C. reinhardtii cells grown under the synchronizing conditions of 14 h of light followed by 10 h of darkness, mRNAs for tubulin and associated flagellar proteins were found to accumulate periodically with a peak just prior to cell division. This was not seen when previously synchronized cells were transferred to constant environmental conditions in a turbidostat, suggesting that dramatic changes in tubulin mRNA levels are not required for successful completion of the cell cycle. A hypothesis to explain the patterns of tubulin mRNA accumulation found under different environmental conditions is presented.




© The Company of Biologists Ltd 1988