Biological rhythms in the deep-sea hydrothermal mussel Bathymodiolus azoricus
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Date | 2020-07 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Language | English | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Author(s) | Mat Audrey2, Sarrazin Jozee![]() ![]() ![]() ![]() ![]() |
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Affiliation(s) | 1 : Univ Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France 2 : Ifremer, EEP, F-29280, Plouzané, France 3 : Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff (SBR), 29680, Roscoff, France 4 : GeT-PlaGe, Genotoul, INRA Auzeville, Auzeville, France 5 : INRA, Plate-forme Genotoul Bioinfo, UR875, Auzeville, France 6 : Sorbonne Université, CNRS, Lab. Adaptation et Diversité en Milieu Marin, Team ABICE, Station Biologique de Roscoff, 29680, Roscoff, France |
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Source | Nature Communications (2041-1723) (Springer Science and Business Media LLC), 2020-07 , Vol. 11 , N. 1 , P. 3454 (12p.) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
DOI | 10.1038/s41467-020-17284-4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
WOS© Times Cited | 15 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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. |
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