Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 17 July 1964:
Vol. 145. no. 3629, pp. 266 - 268
DOI: 10.1126/science.145.3629.266
Prev | Table of Contents | Next

Articles

Replication of DNA and Cell Division in Synchronously Dividing Cultures of Euglena gracilis

Leland N. Edmunds Jr. 1

1 Department of Biology, Princeton University, Princeton, New Jersey

Autotrophic Euglena gracilis Klebs (strain Z) that are grown axenically on defined, inorganic medium on a regime of 14 hours of light and 10 hours of darkness double their cell number every 24 hours by dividing synchronously during the dark period. The DNA content doubles in a stepwise manner during the last 6 hours of the light period just prior to cell division. This result agrees with those for most higher cells. Although DNA replication is a necessary condition for cell division it is not a sufficient one.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Oscillator control of cell division in Euglena: cyclic AMP oscillations mediate the phasing of the cell division cycle by the circadian clock.
I. Carre and L. Edmunds (1993)
J. Cell Sci. 104, 1163-1173
   Abstract »    PDF »
Clocked cell cycle clocks.
L. Edmunds Jr and K. Adams (1981)
Science 211, 1002-1013
   Abstract »    PDF »
Persisting Circadian Rhythm of Cell Division in a Photosynthetic Mutant of Euglena.
R. M. Jarrett and L. N. Edmunds Jr. (1970)
Science 167, 1730-1733
   Abstract »    PDF »
Circadian Rhythm of Cell Division in Euglena: Effects of a Random Illumination Regimen.
L. N. Edmunds Jr. and R. R. Funch (1969)
Science 165, 500-503
   Abstract »    PDF »
Algae: Amounts of DNA and Organic Carbon in Single Cells.
O. Holm-Hansen (1969)
Science 163, 87-88
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)