Title :

A robust two-gene oscillator at the core of Ostreococcus tauri circadian clock

Author(s) :

Morant, Pierre-Emmanuel [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Thommen, Quentin [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Pfeuty, Benjamin [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Vandermoëre, Constant [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Corellou, Florence [Auteur]
Laboratoire d'Océanographie Microbienne [LOMIC]
Bouget, François-Yves [Auteur]
Laboratoire d'Océanographie Microbienne [LOMIC]
LEFRANC, Marc [Auteur correspondant]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Journal title :

Chaos: An Interdisciplinary Journal of Nonlinear Science

Pages :

045108

Publisher :

American Institute of Physics

Publication date :

2010-12-30

ISSN :

1054-1500

Keyword(s) :

horloges circadiennes
réseaux génétiques
oscillations

HAL domain(s) :

Sciences du Vivant [q-bio]/Bio-Informatique, Biologie Systémique [q-bio.QM]
Informatique [cs]/Bio-informatique [q-bio.QM]
Sciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire/Réseaux moléculaires [q-bio.MN]

English abstract : [en]

The microscopic green alga Ostreococcus tauri is rapidly emerging as a promising model organism in the green lineage. In particular, recent results by Corellou et al. [Plant Cell, 21, 3436 (2009)] and Thommen et al. [PLoS ...
Show more >The microscopic green alga Ostreococcus tauri is rapidly emerging as a promising model organism in the green lineage. In particular, recent results by Corellou et al. [Plant Cell, 21, 3436 (2009)] and Thommen et al. [PLoS Comput. Biol. 6, e1000990 (2010)] strongly suggest that its circadian clock is a simplified version of Arabidopsis thaliana clock, and that it is architectured so as to be robust to natural daylight fluctuations. In this work, we analyze time series data from luminescent reporters for the two central clock genes TOC1 and CCA1 and correlate them with microarray data previously analyzed. Our mathematical analysis strongly supports both the existence of a simple two-gene oscillator at the core of Ostreococcus tauri clock and the fact that its dynamics is not affected by light in normal entrainment conditions, a signature of its robustness.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Modélisation de l'horloge circadienne dans un nouveau modèle biologique : l'Ostreococcus tauri

Comment :

13 pages

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL