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Molecular response of a sub-antarctic population of the blue mussel (Mytilus edulis platensis) to a moderate thermal stress

Bultelle, Florence, Boutet, Isabelle, Devin, Simon, Caza, France, St-Pierre, Yves ORCID: https://orcid.org/0000-0002-1948-2041, Péden, Roman, Brousseau, Pauline, Chan, Philippe, Vaudry, David, Le Foll, Franck, Fournier, Michel, Auffret, Michel et Rocher, Béatrice (2021). Molecular response of a sub-antarctic population of the blue mussel (Mytilus edulis platensis) to a moderate thermal stress Marine Environmental Research , vol. 169 , nº 105393. p. 1-11. DOI: 10.1016/j.marenvres.2021.105393.

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Résumé

The Kerguelen Islands (49°26′S, 69°50′E) represent a unique environment due to their geographical isolation, which protects them from anthropogenic pollution. The ability of the endemic mussel, part of the Mytilus complex, to cope with moderate heat stress was explored using omic tools. Transcripts involved in six major metabolic functions were selected and the qRT-PCR data indicated mainly changes in aerobic and anaerobic energy metabolism and stress response. Proteomic comparisons revealed a typical stress response pattern with cytoskeleton modifications and elements suggesting increased energy metabolism. Results also suggest conservation of protein homeostasis by the long-lasting presence of HSP while a general decrease in transcription is observed. The overall findings are consistent with an adaptive response to moderate stresses in mussels in good physiological condition, i.e. living in a low-impact site, and with the literature concerning this model species. Therefore, local blue mussels could be advantageously integrated into biomonitoring strategies, especially in the context of Global Change. © 2021 Elsevier Ltd

Type de document: Article
Mots-clés libres: 2DE; Abiotic stress; Biomonitoring; Gills; Indicator Species; Kerguelen Island; Mytilus sp.; Temperature; qRT-PCR
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 22 juin 2022 19:19
Dernière modification: 22 juin 2022 19:19
URI: https://espace.inrs.ca/id/eprint/12308

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