Host transcriptomic plasticity and photosymbiotic fidelity underpin $Pocillopora$ acclimatization across thermal regimes in the Pacific Ocean - Université Côte d'Azur Access content directly
Journal Articles Nature Communications Year : 2023

Host transcriptomic plasticity and photosymbiotic fidelity underpin $Pocillopora$ acclimatization across thermal regimes in the Pacific Ocean

1 UMR 8030 - Génomique métabolique
2 GOSEE - Global Oceans Systems Ecology & Evolution - Tara Oceans
3 CRIOBE - Centre de recherches insulaires et observatoire de l'environnement
4 Universität Konstanz
5 CONACYT-CIBNOR - Centro de Investigaciones Biologicas del Noroeste [Mexico]
6 GENOSCOPE - Genoscope - Centre national de séquençage [Evry]
7 Fondation Tara Ocean
8 University of Maine
9 SBR - Station biologique de Roscoff
10 Shimoda Marine Research Center
11 IBENS - Institut de biologie de l'ENS Paris
12 ADMM - Adaptation et diversité en milieu marin
13 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
14 GEOTRAC - Géochrononologie Traceurs Archéométrie
15 Weizmann Institute of Science [Rehovot, Israël]
16 IRCAN - Institut de Recherche sur le Cancer et le Vieillissement
17 LIA ROPSE - Laboratoire International Associé Réponse des Organismes et Populations face au Stress Environnemental - Université Côte d’Azur - Centre Scientifique de Monaco
18 LECOB - Laboratoire d'Ecogéochimie des environnements benthiques
19 CHU Nice - Centre Hospitalier Universitaire de Nice
20 OncoAge - FHU OncoAge - Pathologies liées à l’âge [CHU Nice]
21 LOV - Laboratoire d'océanographie de Villefranche
22 EMBL-EBI - European Bioinformatics Institute [Hinxton]
23 OSU - Ohio State University [Columbus]
24 Institute of Microbiology and Swiss Institute of Bioinformatics
25 Microbiology, School of Biological and Chemical Sciences, University of Galway, Ireland
26 Tara Expéditions
27 Tara Ocean Foundation
28 OSU - Oregon State University
Benjamin C C Hume
Christian R Voolstra
Guillaume Bourdin
Sylvain Agostini
Emmanuel Boss
Matthew B Sullivan
Romain Troublé
Rebecca Vega Thurber

Abstract

Heat waves are causing declines in coral reefs globally. Coral thermal responses depend on multiple, interacting drivers, such as past thermal exposure, endosymbiont community composition, and host genotype. This makes the understanding of their relative roles in adaptive and/or plastic responses crucial for anticipating impacts of future warming. Here, we extracted DNA and RNA from 102 $Pocillopora$ colonies collected from 32 sites on 11 islands across the Pacific Ocean to characterize host-photosymbiont fidelity and to investigate patterns of gene expression across a historical thermal gradient. We report high host-photosymbiont fidelity and show that coral and microalgal gene expression respond to different drivers. Differences in photosymbiotic association had only weak impacts on host gene expression, which was more strongly correlated with the historical thermal environment, whereas, photosymbiont gene expression was largely determined by microalgal lineage. Overall, our results reveal a three-tiered strategy of thermal acclimatization in $Pocillopora$ underpinned by host-photosymbiont specificity, host transcriptomic plasticity, and differential photosymbiotic association under extreme warming.
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cea-04171796 , version 1 (26-07-2023)

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Eric J Armstrong, Julie Lê-Hoang, Quentin Carradec, Jean-Marc Aury, Benjamin Noel, et al.. Host transcriptomic plasticity and photosymbiotic fidelity underpin $Pocillopora$ acclimatization across thermal regimes in the Pacific Ocean. Nature Communications, 2023, 14, pp.3056. ⟨10.1038/s41467-023-38610-6⟩. ⟨cea-04171796⟩
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