The circadian rhythm in RNA synthesis in Acetabularia mediterranea

Thérèse Vanden Driessche; Silvano Bonotto

doi:10.1016/0005-2787(69)90122-1

The circadian rhythm in RNA synthesis in Acetabularia mediterranea

Thérèse Vanden Driessche
, Silvano Bonotto

Research output › peer-review

Abstract

The incorporation of [³H]uridine into the RNA fractions of Acetabularia mediterranea has been investigated at different times of the day. It has been found that there is a rhythm in the incorporation rate of labelled uridine in the acid-insoluble fraction. The maximum occurs about 3 h after the middle of the light period. The rhythm is endogenous since it has been found to occur in continuous light (one dark period having been skipped). However, in the absence of one dark period, there is a very strong decrease in the incorporation values. In some cases, the rhythm cannot be detected. The anucleate algae behave in the same way as the nucleate ones. The rhythm seems to be associated with the chloroplasts.

Original language	English
Pages (from-to)	58-66
Number of pages	9
Journal	Biochimica et biophysica acta; Nucleic acids and protein synthesis
Volume	179
Issue number	1
DOIs	https://doi.org/10.1016/0005-2787(69)90122-1
State	Published - 18 Mar 1969

ASJC Scopus subject areas

General Medicine

Access to Document

10.1016/0005-2787(69)90122-1

Cite this

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title = "The circadian rhythm in RNA synthesis in Acetabularia mediterranea",

abstract = "The incorporation of [3H]uridine into the RNA fractions of Acetabularia mediterranea has been investigated at different times of the day. It has been found that there is a rhythm in the incorporation rate of labelled uridine in the acid-insoluble fraction. The maximum occurs about 3 h after the middle of the light period. The rhythm is endogenous since it has been found to occur in continuous light (one dark period having been skipped). However, in the absence of one dark period, there is a very strong decrease in the incorporation values. In some cases, the rhythm cannot be detected. The anucleate algae behave in the same way as the nucleate ones. The rhythm seems to be associated with the chloroplasts.",

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