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| Bazes, Alexandra; Silkina, Alla; Douzenel, Philippe; Fay, Fabienne; Kervarec, Nelly; Morin, Dimitri; Berge, Jean-pascal; Bourgougnon, Nathalie. |
| One of the most promising alternatives to toxic heavy metal-based paints is offered by the development of antifouling coatings in which the active ingredients are compounds naturally occurring in marine organisms and operating as natural antisettlement agents. Sessile marine macroalgae are remarkably free from settlement by fouling organisms. They produce a wide variety of chemically active metabolites in their surroundings, potentially as an aid to protect themselves against other settling organisms. In this study, a dichloromethane extract from the brown seaweed Sargassum muticum was tested in situ and, after 2 months of immersion, showed less fouling organisms on paints in which the extract was included, compared to paints containing only copper after 2... |
| Tipo: Text |
Palavras-chave: Sargassum muticum; Palmitic acid; Dioctyl phthalate; Dichloromethane extract; Brown algae; Antifouling. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6601.pdf |
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| Cario, Anaïs; Jebbar, Mohamed; Thiel, Axel; Kervarec, Nelly; Oger, Phil M.. |
| The accumulation of mannosyl-glycerate (MG), the salinity stress response osmolyte of Thermococcales, was investigated as a function of hydrostatic pressure in Thermococcus barophilus strain MP, a hyperthermophilic, piezophilic archaeon isolated from the Snake Pit site (MAR), which grows optimally at 40 MPa. Strain MP accumulated MG primarily in response to salinity stress, but in contrast to other Thermococcales, MG was also accumulated in response to thermal stress. MG accumulation peaked for combined stresses. The accumulation of MG was drastically increased under sub-optimal hydrostatic pressure conditions, demonstrating that low pressure is perceived as a stress in this piezophile, and that the proteome of T. barophilus is low-pressure sensitive. MG... |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00345/45570/45178.pdf |
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| Roger, Olivier; Kervarec, Nelly; Ratiskol, Jacqueline; Colliec-jouault, Sylvia; Chevolot, Lionel. |
| The structure of the extracellular polysaccharide produced by the mesophilic species, Alteromonas infernus, found in deep-sea hydrothermal vents and grown under laboratory conditions, has been investigated using partial depolymerization, methylation analysis, mass spectrometry and NMR spectroscopy. The repeating units of this polysaccharide is a nonasaccharide with the following structure: [GRAPHICS] (C) 2004 Elsevier Ltd. All rights reserved. |
| Tipo: Text |
Palavras-chave: Hydrothermal vent; Structure; Bacterial polysaccharide; Alteromonas. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-2112.pdf |
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