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| Rzeznik-orignac, Jadwiga; Puisay, Antoine; Derelle, Evelyne; Peru, Erwan; Le Bris, Nadine; Galand, Pierre E.. |
| In submarine canyon sediments, bacteria and nematodes dominate the benthic biomass and play a key role in nutrient cycling and energy transfer. The diversity of these communities remains, however, poorly studied. This work aims at describing the composition of bacteria and nematode communities in the Lacaze-Duthiers submarine canyon in the north-western Mediterranean Sea. We targeted three sediment depths for two consecutive years and investigated the communities using nuclear markers (18S rRNA and 16S rRNA genes). High throughput sequencing combined to maximal information coefficient (MIC) statistical analysis allowed us to identify, for the first time, at the same small scale, the community structures and the co-occurrence of nematodes and bacteria... |
| Tipo: Text |
Palavras-chave: Bacteria; Meiofauna; Canyon Lacaze-Duthiers; Metabarcording; Molecular approach; Mediterranean Sea; Nematodes; Marine biodiversity; 18S; 16S. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56586/76447.pdf |
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| Chambouvet, Aurelie; Smilansky, Vanessa; Jirků, Miloslav; Isidoro-ayza, Marcos; Itoïz, Sarah; Derelle, Evelyne; Monier, Adam; Gower, David J.; Wilkinson, Mark; Yabsley, Michael J.; Lukeš, Julius; Richards, Thomas A.. |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00609/72115/70858.pdf |
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| Yau, Sheree; Krasovec, Marc; Benites, L. Felipe; Rombauts, Stephane; Groussin, Mathieu; Vancaester, Emmelien; Aury, Jean-marc; Derelle, Evelyne; Desdevises, Yves; Escande, Marie-line; Grimsley, Nigel; Guy, Julie; Moreau, Hervé; Sanchez-brosseau, Sophie; Van De Peer, Yves; Vandepoele, Klaas; Gourbiere, Sebastien; Piganeau, Gwenael. |
| Virus-microbe interactions in the ocean are commonly described by “boom and bust” dynamics, whereby a numerically dominant microorganism is lysed and replaced by a virus-resistant one. Here, we isolated a microalga strain and its infective dsDNA virus whose dynamics are characterized instead by parallel growth of both the microalga and the virus. Experimental evolution of clonal lines revealed that this viral production originates from the lysis of a minority of virus-susceptible cells, which are regenerated from resistant cells. Whole-genome sequencing demonstrated that this resistant-susceptible switch involved a large deletion on one chromosome. Mathematical modeling explained how the switch maintains stable microalga-virus population dynamics... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00623/73461/72701.pdf |
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