IHPE – DUPONT Samuel english

DupontIHPE UMR 5244
University of Montpellier
Place Eugène Bataillon CC 80
F-34095 Montpellier Cedex 5 FRANCE
Tel +33(0)4-67-14-37-26
Fax +33(0)4-67-14-46-22
email: samuel.dupont@ifremer.fr
POSITION : Postdoctoral Fellow
Microbiology, Virology, Ecology, Molecular Biology, Microscopy, Chemistry of natural products
« Oyster hemo-microbiota: microbial diversity and dynamics during experimental pathogenesis of Crassostrea gigas. »
The main oyster species exploited in France and worldwide, Crassostrea gigas, suffers from devastating summer mortality outbreaks, which severity has dramatically increased since 2008. A series of research projects have evidenced that mortality outbreaks are linked to abiotic factors, human activities, oyster genetics, their life history, their immune status and of course, to pathogens that might influence each other. It has been recently suggested that bacteria living in oysters’ hemolymph (hemo-microbiota) might also be a factor affecting oyster fitness. However, most of the research does not consider overall microbiota but focus on bacteria living in oyster hemolymph. The candidate will be associated to a research program integrating (i) qualitative and quantitative analyses of overall oyster hemo-microbiota (virus, prokaryote and eukaryote) through classical approaches (microscopy and cytometry) as well as recent metagenomic methods (metabarcoding and shotgun metagenomic sequencing) and (ii) the analysis of hemo-microbiota dynamic in various genetic background and immune statute of the host, changes in the environment and the history of interactions between the protagonists of this pathosystem. These studies will determine if the oyster can control and adapt the composition of its hemo-microbiota to improve its fitness especially in the context of disease emergence
2014-2015 Post-doctoral fellowship in virology (Microbiology of Extreme Environments Laboratory, UMR6197 CNRS-UBO-Ifremer, Plouzané)
2010-2013  Ph.D in microbial ecology (University Pierre et Marie Curie, Paris)
2008-2010  Master degree « Fondamental biology» (University of Brest)
2004-2006: University of Technical degree of biology  (University of Rennes 1)

J. Lossouarn, S. Dupont, C. Mercier, A. Gorlas, P. Forterre & C. Geslin. An abyssal mobilome : virus, plasmids and vesicles from deep-sea hydrothermal vents. Acceptée dans Research in microbiology (2015) doi:10.1016/j.resmic.2015.04.001
S. Dupont, A. Carré-Mlouka, I. Domart-Coulon, J. Vacelet, & M. L. Bourguet-Kondracki. Exploring cultivable Bacteria from the prokaryotic community associated with the carnivorous Asbestopluma hypogea ». FEMS Ecology Microbiology (2014) 88:160-174
S. Dupont, A. Carré-Mlouka, F. Descarrega, A. Ereskovsky, A.Longeon, E. Mouray, I. Florent & M. L. Bourguet-Kondracki. Biodiversity and biological activities of the bacterial community associated with the marine sponge Phorbas tenacior (Porifera, Demospongiae). Letters in applied microbiology (2014) 58 :42-52
Orange, S. Dupont, O. Le Goff, N. Bienvenu, J.R. Disnar, F. Westall & M. Le Romancer. Experimental fossilisation of the thermophilic Gram-positive Bacteria Geobacillus SP7A: a long duration morphological and survival study. Geomicrobiology (2014)
S. Dupont, E. Corre, Y. Li, J. Vacelet, & M. L. Bourguet-Kondracki. First insights into the microbiome of a carnivorous sponge. FEMS Ecology Microbiology (2013) 86:520-531
S. Dupont, E. Corre, Y. Li, J. Vacelet, & M. L. Bourguet-Kondracki. Diversity of bacteria associated with the carnivorous sponge Asbestopluma hypogea. Cytotechnology (2013) 65:686-687