Thermal tipping points in mediterranean mussel adhesion: molecular mechanisms and mechanical consequences of heatwave on byssus production in Mytilus galloprovincialis

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Опубликовано в::	Scientific Reports (Nature Publisher Group) vol. 15, no. 1 (2025), p. 24752
Главный автор:	De Marco, Antonina
Другие авторы:	Baldassarro, Vito Antonio, Quadalti, Corinne, Burato, Valentina, Calzà, Laura, Giardino, Luciana, Montroni, Devis, Falini, Giuseppe, Graziani, Gabriela, Greggio, Nicolas, Dondi, Francesco, Ferrari, Maria Giulia, Gatta, Pier Paolo, Parma, Luca, Bonaldo, Alessio
Опубликовано:	Nature Publishing Group
Предметы:	Adriatic Sea Mollusks Climate change Shellfish Heat shock proteins Filaments Biometrics Heat resistance Mortality Hsp70 protein Ecosystem services Exposure tolerance High temperature Molecular modelling Heat Genomes Metabolism Gene expression Collagen Heat waves Air exposure Biodiversity Shellfish farming Water temperature Adhesion Mytilus galloprovincialis Environmental
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Описание
Краткий обзор:	Prolonged marine heat waves are a major manifestation of climate change, threatening marine biodiversity. Using the Mytilus galloprovincialis mussel as a sentinel organism, we investigated the impact of experimental, prolonged high temperatures as expected in 2050 on byssus-producing organ. We demonstrated that 30 days exposure at 28 °C, alters molecular and functional properties of mussel foot. Results revealed severe downregulation in the synthesis of the proximal, distal and non-gradient pre-collagen byssus components. The stressed mussels produced less than half the number of byssus filaments compared to the control. Byssus threads showed reduced mechanical resistance to traction, with a 55% decrease in maximum force. At the organism’s health status level, a long-term collapse in heat shock protein 70 subspecies expression suggests energy depletion. This is confirmed by a reduction of the hepatosomatic index during exposure and by the physiological impairment with clearance rate reduction and loss of air exposure tolerance. These effects compromise the mussel’s substrate adhesion, increasing the risk of detachment but also threaten bivalve survival. The potential consequences at the ecological level could be severe, including a reduction in coastal biodiversity, in the ecosystem services provided by these animals, as well as risks to the sustainability of Mediterranean mussel farming.
ISSN:	2045-2322
DOI:	10.1038/s41598-025-08708-6
Источник:	Science Database