Consulta: creatorFacets:"Georges, Myriam"
Registros recuperados: 4
Data/hora: 06/06/2024 11:29:05

Close inbreeding and low genetic diversity in Inner Asian human populations despite geographical exogamy
Provedor de dados: 5
Autores: Marchi, Nina; Mennecier, Philippe; Georges, Myriam; Lafosse, Sophie; Hegay, Tatyana; Dorzhu, Choduraa; Chichlo, Boris; Segurel, Laure; Heyer, Evelyne.
When closely related individuals mate, they produce inbred offspring, which often have lower fitness than outbred ones. Geographical exogamy, by favouring matings between distant individuals, is thought to be an inbreeding avoidance mechanism; however, no data has clearly tested this prediction. Here, we took advantage of the diversity of matrimonial systems in humans to explore the impact of geographical exogamy on genetic diversity and inbreeding. We collected ethno-demographic data for 1,344 individuals in 16 populations from two Inner Asian cultural groups with contrasting dispersal behaviours (Turko-Mongols and Indo-Iranians) and genotyped genome-wide single nucleotide polymorphisms in 503 individuals. We estimated the population exogamy rate and...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00477/58916/61480.pdf

Cultivation of an immobilized (hyper)thermophilic marine microbial community in a bioreactor
Provedor de dados: 5
Autores: Landreau, M.; Duthoit, Frederique; Roussel, Erwan; Schonherr, S.; Georges, Myriam; Godfroy, Anne; Le Blay, G.
Cultivation in a bioreactor of immobilized deep-sea hydrothermal microbial community was tested in order to assess the stability and reactivity of this new system. A community composed of 8 hydrothermal strains was entrapped in a polymer matrix that was used to inoculate a continuous culture in a gas-lift bioreactor. The continuous culture was performed for 41 days at successively 60°C, 55°C, 60°C, 85°C and 60°C, at pH 6.5, in anaerobic condition and constant dilution rate. Oxic stress and pH variations were tested at the beginning of the incubation. Despite these detrimental conditions, 3 strains including 2 strict anaerobes were maintained in the bioreactor. High cell concentrations (3 × 108 cells mL−1) and high ATP contents were measured in both liquid...
Tipo: Text
Palavras-chave: Immobilization; Anaerobiosis; Marine (hyper)thermophiles; Continuous culture.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00347/45851/45516.pdf

Complete Genome Sequence of Hyperthermophilic Archaeon   Thermococcus   sp. EXT12c, Isolated from the East Pacific Rise 9°N
Provedor de dados: 5
Autores: Courtine, Damien; Alain, Karine; Georges, Myriam; Bienvenu, Nadège; Morrison, Hilary G.; Eren, A. Murat; Maignien, Lois.
We report the genome sequence of Thermococcus sp. EXT12c isolated from a deep-sea hydrothermal vent at the East Pacific Rise 9°N. Microbes in the genus Thermococcus are able to grow anaerobically at high temperature, around neutral pH, and some of them under high hydrostatic pressure.
Tipo: Text
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00415/52652/53509.pdf

Complete Genome Sequence of the Hyperthermophilic and Piezophilic Archeon   Thermococcus piezophilus   CDGS   T   , Able To Grow under Extreme Hydrostatic Pressures
Provedor de dados: 5
Autores: Dalmasso, Cécile; Oger, Philippe; Courtine, Damien; Georges, Myriam; Takai, Ken; Maignien, Lois; Alain, Karine.
We report the genome sequence of Thermococcus superprofundus strain CDGST, a new piezophilic and hyperthermophilic member of the order Thermococcales isolated from the world’s deepest hydrothermal vents, at the Mid-Cayman Rise. The genome is consistent with a heterotrophic, anaerobic, and piezophilic lifestyle.
Tipo: Text
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00345/45616/45237.pdf