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| Curd, Amelia; Pernet, Fabrice; Corporeau, Charlotte; Delisle, Lizenn; Firth, Louise B.; Nunes, Flavia; Dubois, Stanislas. |
| The honeycomb worm Sabellaria alveolata is capable of building extensive bioconstructions, including what are currently considered Europe’s largest biogenic reefs. The size and volume of these bioconstructions, however, vary greatly, such that not all habitats engineered by S. alveolata may be easily identified as reefs. Given that European environmental legislation protects marine habitats that are classified as “reefs”, it is important to identity a clear set of definition criteria. Furthermore, quantifiable and unequivocal criteria are also needed to evaluate the ecological (health) state of these reefs, in order to best monitor and protect them. Here we propose new terminology to describe the physical appearance of these bioconstructions and attempt to... |
| Tipo: Text |
Palavras-chave: Biochemical indicators; Health; Ecological status; Sabellaria alveolata; Biogcnic reef; Engineer species. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00464/57608/60175.pdf |
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| Delisle, Lizenn; Pauletto, Marianna; Vidal-dupiol, Jeremie; Petton, Bruno; Bargelloni, Luca; Montagnani, Caroline; Pernet, Fabrice; Corporeau, Charlotte; Fleury, Elodie. |
| Of all environmental factors, seawater temperature plays a decisive role in triggering marine diseases. Like fever in vertebrates, high seawater temperature could modulate the host response to pathogens in ectothermic animals. In France, massive mortality of Pacific oysters, Crassostrea gigas, caused by the ostreid herpesvirus 1 (OsHV-1) is markedly reduced when temperatures exceed 24°C in the field. In the present study we assess how high temperature influences the host response to the pathogen by comparing transcriptomes (RNA sequencing) during the course of experimental infection at 21°C (reference) and 29°C. We show that high temperature induced host physiological processes that are unfavorable to the viral infection. Temperature influenced the... |
| Tipo: Text |
Palavras-chave: Anti-viral molecular pathway; Host-pathogen interaction; Marine disease; OsHV-1; Resistance; Temperature. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00656/76806/77974.pdf |
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| Fuhrmann, Marine; Delisle, Lizenn; Petton, Bruno; Corporeau, Charlotte; Pernet, Fabrice. |
| The Pacific oyster, Crassostrea gigas, is an osmoconforming bivalve exposed to wide salinity fluctuations. The physiological mechanisms used by oysters to cope with salinity stress are energy demanding and may impair other processes, such as defense against pathogens. This oyster species has been experiencing recurrent mortality events caused by the Ostreid herpesvirus 1 (OsHV-1). The objectives of this study were to investigate the effect of salinity (10, 15, 25 and 35‰) on energetic reserves, key enzyme activities and membrane fatty acids, and to identify the metabolic risk factors related to OsHV-1-induced mortality of oysters. Acclimation to low salinity led to increased water content, protein level, and energetic reserves (carbohydrates and... |
| Tipo: Text |
Palavras-chave: Bivalve; Disease; Environment; Metabolism; Mortality risk; Salinity. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00427/53886/54958.pdf |
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| Corporeau, Charlotte; Huvet, Arnaud; Pichereau, Vianney; Delisle, Lizenn; Quéré, Claudie; Dubreuil, Christine; Artigaud, Sebastien; Brenner, Catherine; Meyenberg Cunha-de Padua, Monique; Mazure, Nathalie. |
| The Warburg effect is one of the hallmarks of cancer cells in humans. It is a true metabolic reprogramming to aerobic glycolysis, allowing cancer cells to meet their particular energy needs for growth, proliferation, and resistance to apoptosis, depending on the microenvironment they encounter within the tumor. We have recently discovered that the Crassostrea gigas oyster can naturally reprogram its metabolism to the Warburg effect. Thus, the oyster becomes a new invertebrate model useful for cancer research. Due to its lifestyle, the oyster C. gigas has special abilities to adapt its metabolism to the extreme changes in the environment in which it is located. The oyster C. gigas is therefore a model of interest to study how the environment can control the... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00499/61064/64516.pdf |
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| Delisle, Lizenn; Fuhrmann, Marine; Quere, Claudie; Pauletto, Marianna; Pichereau, Vianney; Pernet, Fabrice; Corporeau, Charlotte. |
| Voltage-dependent anion channel (VDAC) is a key mitochondrial protein. VDAC drives cellular energy metabolism by controlling the influx and efflux of metabolites and ions through the mitochondrial membrane, playing a role in its permeabilization. This protein exerts a pivotal role during the white spot syndrome virus (WSSV) infection in shrimp, through its involvement in a particular metabolism that plays in favor of the virus, the Warburg effect. The Warburg effect corresponds to an atypical metabolic shift toward an aerobic glycolysis that provides energy for rapid cell division and resistance to apoptosis. In the Pacific oyster Crassostrea gigas, the Warburg effect occurs during infection by Ostreid herpesvirus (OsHV-1). At present, the role of VDAC in... |
| Tipo: Text |
Palavras-chave: Voltage-dependent anion channel; Warburg effect; Crassostrea gigas; Ostreid herpes virus. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00420/53129/54142.pdf |
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