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Biological rhythms in the deep-sea hydrothermal mussel Bathymodiolus azoricus

Author

Listed:
  • Audrey M. Mat

    (Univ Brest, Ifremer, CNRS, IRD, LEMAR
    Ifremer, EEP)

  • Jozée Sarrazin

    (Ifremer, EEP)

  • Gabriel V. Markov

    (Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff (SBR))

  • Vincent Apremont

    (Univ Brest, Ifremer, CNRS, IRD, LEMAR
    Ifremer, EEP)

  • Christine Dubreuil

    (Univ Brest, Ifremer, CNRS, IRD, LEMAR)

  • Camille Eché

    (GeT-PlaGe, Genotoul, INRA Auzeville)

  • Caroline Fabioux

    (Univ Brest, Ifremer, CNRS, IRD, LEMAR)

  • Christophe Klopp

    (INRA, Plate-forme Genotoul Bioinfo, UR875)

  • Pierre-Marie Sarradin

    (Ifremer, EEP)

  • Arnaud Tanguy

    (Sorbonne Université, CNRS, Lab. Adaptation et Diversité en Milieu Marin, Team ABICE, Station Biologique de Roscoff)

  • Arnaud Huvet

    (Univ Brest, Ifremer, CNRS, IRD, LEMAR)

  • Marjolaine Matabos

    (Ifremer, EEP)

Abstract

Biological rhythms are a fundamental property of life. The deep ocean covers 66% of our planet surface and is one of the largest biomes. The deep sea has long been considered as an arrhythmic environment because sunlight is totally absent below 1,000 m depth. In the present study, we have sequenced the temporal transcriptomes of a deep-sea species, the ecosystem-structuring vent mussel Bathymodiolus azoricus. We reveal that tidal cycles predominate in the transcriptome and physiology of mussels fixed directly at hydrothermal vents at 1,688 m depth at the Mid-Atlantic Ridge, whereas daily cycles prevail in mussels sampled after laboratory acclimation. We identify B. azoricus canonical circadian clock genes, and show that oscillations observed in deep-sea mussels could be either a direct response to environmental stimulus, or be driven endogenously by one or more biological clocks. This work generates in situ insights into temporal organisation in a deep-sea organism.

Suggested Citation

  • Audrey M. Mat & Jozée Sarrazin & Gabriel V. Markov & Vincent Apremont & Christine Dubreuil & Camille Eché & Caroline Fabioux & Christophe Klopp & Pierre-Marie Sarradin & Arnaud Tanguy & Arnaud Huvet &, 2020. "Biological rhythms in the deep-sea hydrothermal mussel Bathymodiolus azoricus," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17284-4
    DOI: 10.1038/s41467-020-17284-4
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