Molecular response of a sub-Antarctic population of the blue mussel (Mytilus edulis platensis) to a moderate thermal stress - Université de Lorraine Access content directly
Journal Articles Marine Environmental Research Year : 2021

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

Michel Fournier
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Michel Auffret

Abstract

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.
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Dates and versions

hal-03269909 , version 1 (24-06-2021)

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Florence Bultelle, Isabelle Boutet, Simon Devin, France Caza, Yves St-Pierre, et al.. Molecular response of a sub-Antarctic population of the blue mussel (Mytilus edulis platensis) to a moderate thermal stress. Marine Environmental Research, 2021, pp.105393. ⟨10.1016/j.marenvres.2021.105393⟩. ⟨hal-03269909⟩
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