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bHLH-PAS protein RITMO1 regulates diel biological rhythms in the marine diatom Phaeodactylum tricornutum
Annunziata, R.; Ritter, A.; Fortunato, A.E.; Manzotti, A.; Cheminant-Navarro, S.; Agier, N.; Huysman, M.J.J.; Winge, P.; Bones, A.M.; Bouget, F.-Y.; Lagomarsino, M.C.; Bouly, J.-P.; Falciatore, A. (2019). bHLH-PAS protein RITMO1 regulates diel biological rhythms in the marine diatom Phaeodactylum tricornutum. Proc. Natl. Acad. Sci. U.S.A. 116(26): 13137-13142. https://dx.doi.org/10.1073/pnas.1819660116
In: Proceedings of the National Academy of Sciences of the United States of America. The Academy: Washington, D.C.. ISSN 0027-8424; e-ISSN 1091-6490, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Trefwoorden
    Bacillariophyceae [WoRMS]
    Marien/Kust
Author keywords
    diatom; circadian rhythms; bHLH-PAS; gene expression; cellularfluorescence

Auteurs  Top 
  • Annunziata, R.
  • Ritter, A., meer
  • Fortunato, A.E.
  • Manzotti, A.
  • Cheminant-Navarro, S.
  • Agier, N.
  • Huysman, M.J.J., meer
  • Winge, P.
  • Bones, A.M.
  • Bouget, F.-Y.
  • Lagomarsino, M.C.
  • Bouly, J.-P.
  • Falciatore, A.

Abstract
    Most organisms experience daily light–dark changes and show rhythms of basic biological processes such that they occur at optimal times of the day. Rhythms are also observed in a multitude of marine organisms, but their molecular foundations are still largely unknown. Here, we report daily oscillations of gene expression and cell fluorescence in the diatom Phaeodactylum tricornutum, which persist in the absence of external timing cues. We demonstrate that the protein RITMO1, encoded by a bHLH-PAS gene, which is widely represented in algal genomes, regulates these rhythms. By demonstrating circadian regulation in the most species-rich algal group in the ocean, this study unveils critical features of diatom biology, thus advancing the field of diurnal and circadian rhythms in marine algae.

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