Abstract
Biological time-keeping mechanisms have fascinated researchers since the movement of leaves with a daily rhythm was first described >270 years ago. The circadian clock confers a 24-hour rhythm on a range of processes including leaf movements and the expression of some genes. Molecular mechanisms and components underlying clock function have been described in recent years for several animal and prokaryotic organisms, and those of plants are beginning to be characterized. The emerging model of the Arabidopsis clock has mechanistic parallels with the clocks of other model organisms, which consist of positive and negative feedback loops, but the molecular components appear to be unique to plants.
| Original language | English |
|---|---|
| Pages (from-to) | 517-522 |
| Number of pages | 6 |
| Journal | Trends in Plant Science |
| Volume | 5 |
| Issue number | 12 |
| DOIs | |
| State | Published - 2000 |
| Externally published | Yes |
Bibliographical note
Funding Information:We would like to thank Pam Green, Yair M. Heimer, May S. Ong and David Greenberg for their helpful comments and suggestions. We are also grateful to Margaret Kowalczyk for excellent technical assistance in preparing the figures. Many thanks to the three anonymous reviewers for their improvements to our manuscript. Our apologies to the many researchers whose work was not cited owing to space limitations. Our work was supported by National Institutes of Health (NIH) grant, GM-23167, to E.M.T.