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| Falaise, Charlotte; Francois, Cyrille; Travers, Marie-agnes; Morga, Benjamin; Haure, Joel; Tremblay, Rejean; Turcotte, Francois; Pasetto, Pamela; Gastineau, Romain; Hardivillier, Yann; Leignel, Vincent; Mouget, Jean-luc. |
| The search for novel compounds of marine origin has increased in the last decades for their application in various areas such as pharmaceutical, human or animal nutrition, cosmetics or bioenergy. In this context of blue technology development, microalgae are of particular interest due to their immense biodiversity and their relatively simple growth needs. In this review, we discuss about the promising use of microalgae and microalgal compounds as sources of natural antibiotics against human pathogens but also about their potential to limit microbial infections in aquaculture. An alternative to conventional antibiotics is needed as the microbial resistance to these drugs is increasing in humans and animals. Furthermore, using natural antibiotics for... |
| Tipo: Text |
Palavras-chave: Biological activity; Antimicrobial; Antibacterial; Antifungal; Antiviral; Biological activity; Haslea; Microalgae; Sustainable aquaculture. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00349/46052/45719.pdf |
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| Falaise, Charlotte; James, Adele; Travers, Marie-agnes; Zanella, Marie; Badawi, Myriam; Mouget, Jean-luc. |
| Marennine, the water-soluble blue pigment produced by the marine diatom Haslea ostrearia, is known to display antibacterial activities. Previous studies have demonstrated a prophylactic effect of marennine on bivalve larvae challenged with a pathogenic Vibrio splendidus, suggesting that the blue Haslea is a good candidate for applications in aquaculture as a source of a natural antimicrobial agent. Indeed, the genus Vibrio is ubiquitous in aquaculture ecosystems, and regular events of pathogenic invasion cause some of the biggest losses worldwide. To better characterize the effects of marennine on Vibrios, a panel of 30 Vibrio strains belonging to 10 different species was tested, including bivalve pathogenic species (e.g., Vibrio crassostreae and Vibrio... |
| Tipo: Text |
Palavras-chave: Antibacterial activity; Diauxie; Haslea; Hormesis; Marennine; Vibrio. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00484/59598/62602.pdf |
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| Jauffrais, Thierry; Jesus, Bruno; Metzger, Edouard; Mouget, Jean-luc; Jorissen, Frans; Geslin, Emmanuelle. |
| Some benthic foraminifera have the ability to incorporate functional chloroplasts from diatoms (kleptoplasty). Our objective was to investigate chloroplast functionality of two benthic foraminifera (Haynesina germanica and Ammonia tepida) exposed to different irradiance levels (0, 25, 70 mot photon m(-2) s(-1)) using spectral reflectance, epifluorescence observations, oxygen evolution and pulse amplitude modulated (PAM) fluorometry (maximum photosystem II quantum efficiency (Fv/Fm) and rapid light curves (RLC)). Our results clearly showed that H. germanica was capable of using its kleptoplasts for more than 1 week while A. tepida showed very limited kleptoplastic ability with maximum photosystem II quantum efficiency (Fv/Fm = 0.4), much lower than H.... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00457/56899/58754.pdf |
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| Falaise, Charlotte; Cormier, Patrick; Tremblay, Réjean; Audet, Céline; Deschênes, Jean-sébastien; Turcotte, François; François, Cyrille; Seger, Andreas; Hallegraeff, Gustaaf; Lindquist, Niels; Sirjacobs, Damien; Gobert, Sylvie; Lejeune, Pierre; Demoulin, Vincent; Mouget, Jean-luc. |
| Marennine is a water-soluble blue-green pigment produced by the marine diatom Haslea ostrearia. The diatom and its pigment are well known from oyster farming areas as the source of the greening of oyster gills, a natural process increasing their market value in Western France. Blooms of blue Haslea are also present outside oyster ponds and hence marine organisms can be exposed, periodically and locally, to significant amounts of marennine in natural environments. Due to its demonstrated antibacterial activities against marine pathogenic bacteria (e.g. Vibrio) and possible prophylactic effects toward bivalve larvae, marennine is of special interest for the aquaculture industry, especially bivalve hatcheries. The present study aimed to provide new insights... |
| Tipo: Text |
Palavras-chave: Diatom; Haslea ostrearia; Marennine; Marine organisms; Natural bioactive compound. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00477/58887/61443.pdf |
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