Search results for "Gènes"

showing 6 items of 66 documents

homogeneous embeddings of SL2(C) modulo a finite sub-group.

2000

L'objet de ce travail est l'étude des variétés algébriques normales complexes munies d'une action algébrique de $SL_{2}$ et qui contiennent $SL_{2}/H$ comme orbite ouverte, $H$ étant un sous-groupe fini de $SL_{2}$.Plus précisément on définit un plongement homogène de $SL_{2}/H$ comme la donnée d'une $SL_{2}$-variété irréductible $X$ (quasi-projective ou non) contenant $SL_{2}/H$ comme orbite ouverte et d'un morphisme $SL_{2}$-équivariant de $SL_{2}$ dans $X$.Les plongements homogènes lisses ainsi que les plongements minimaux (plongements lisses et complets qui ne sont pas des éclatements d'un autre plongement lisse complet) de $SL_{2}/\{Id\}$ et de $SL_{2}/\{\pm Id\}$ ont été déterminés pa…

group actionsreductive groupshomogeneous spacesGéométrie algébrique[MATH.MATH-AG] Mathematics [math]/Algebraic Geometry [math.AG]groupes réductifsactions de groupesespaces homogènesalgebraic geometry
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Loss of rod sensitivity and gene expression changes in the retina of fructose-fed insulin-resistant mice

2012

Purpose: Metabolic syndrome is of major concern in Western countries since it predisposes individuals to the development of diabetes. Insulin resistance is one of the biochemical features of the metabolic syndrome. Fructose feeding has been used to elicit insulin resistance in rodents. Our purpose was to characterize the functional and gene expression changes in the retina after long term feeding mice with a fructose-enriched diet.Methods: Control and ApoB100,LDLR-/- mice, a murine model of aging of the human retina, were fed with a 60%-rich fructose diet for 8 months. Scotopic single flash and Flicker electroretinograms were recorded to monitor the response of the retina to flash stimuli. …

insulin[SDV.MHEP] Life Sciences [q-bio]/Human health and pathologymicelaevulose[ SDV.AEN ] Life Sciences [q-bio]/Food and Nutritionrétinesouris615 nutritional factorseye diseases582 lipidsfructose[SDV.AEN] Life Sciences [q-bio]/Food and Nutrition[SDV.MHEP.OS] Life Sciences [q-bio]/Human health and pathology/Sensory Organs[ SDV.MHEP.OS ] Life Sciences [q-bio]/Human health and pathology/Sensory Organs[ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathologysense organs[SDV.MHEP.OS]Life Sciences [q-bio]/Human health and pathology/Sensory Organs[SDV.AEN]Life Sciences [q-bio]/Food and Nutritioninsuline[SDV.MHEP]Life Sciences [q-bio]/Human health and pathology532 gene/expressionexpression des gènes
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Listeria monocytogenes

2017

Prod 2017-266 équipe EA UB BIOME; National audience; résumé du livre : Pour garantir et maîtriser la sécurité microbiologique des aliments et prévenir les crises sanitaires alimentaires, la connaissance et la surveillance des microorganismes pathogènes depuis la production primaire jusqu’à la distribution des denrées alimentaires en passant par la transformation, sont indispensables. Cet ouvrage de référence traite des dangers microbiologiques alimentaires majeurs (microorganismes infectieux ou toxines d’origine microbienne) et des risques associés pour l’Homme. Illustré de nombreux schémas et tableaux de synthèse, il fait un point complet sur les notions fondamentales de microbiologie géné…

microorganismes pathogènes[SDV] Life Sciences [q-bio][SDE] Environmental Sciences[SDV]Life Sciences [q-bio][SDE]Environmental Sciences[SDV.BV]Life Sciences [q-bio]/Vegetal Biology[SDV.BV] Life Sciences [q-bio]/Vegetal BiologyListeria monocytogenesrisques microbiologiques alimentaires
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(no title)

2017

Biological invasions are recognized as a significant evolutionary factor over short time scales. In particular, their effect is well recorded on the genetic structure of populations, the patterns of phenotypic evolution and the richness of parasite fauna associated to invasive populations. This study aims at quantifying the consequences of a biological invasion according to these three levels (genetical, phenotypical and parasitological) taking as example the Mozambique tilapia Oreochromis mossambicus. This African cichlid is characterized by an unusual conservation status since it is both (i) ranked among the world's worst invasive species due to its global dispersion during the 20th centu…

tilapia[SDV.OT] Life Sciences [q-bio]/Other [q-bio.OT]biological invasionsintrogressionmonogenean parasitesCichlidaeévolution contemporainemorphométrie géométriquepression de propaguleparasites monogènesfounding eventinvasion biologiquepropagule pressurecontemporary evolutionévènement fondateurgeometric morphometricshybridationhybridization
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Evolutionary advantage conferred by an eukaryote-to-eukaryote gene transfer event in wine yeasts

2015

Although an increasing number of horizontal gene transfers have been reported in eukaryotes, experimental evidence for their adaptive value is lacking. Here, we report the recent transfer of a 158-kb genomic region between Torulaspora microellipsoides and Saccharomyces cerevisiae wine yeasts or closely related strains. This genomic region has undergone several rearrangements in S. cerevisiae strains, including gene loss and gene conversion between two tandemly duplicated FOT genes encoding oligopeptide transporters. We show that FOT genes confer a strong competitive advantage during grape must fermentation by increasing the number and diversity of oligopeptides that yeast can utilize as a s…

transfert de gènes[SDV.SA]Life Sciences [q-bio]/Agricultural sciencesBiologiaAliments BiotecnologiaSaccharomycesnitrogensaccharomycesvinVitisBiomassAmino AcidsHomologous Recombinationgene transferFermentation in winemakingGeneticsazote0303 health sciencesVegetal Biologybiologyfot genesfood and beverageseucaryoteBiological EvolutionGlutathioneAgricultural sciencesPhenotypeEukaryotehgt;domestication;competition;nitrogen;oligopeptides;fot genesoligopeptidescompetitionGene Transfer HorizontalGenes FungalSaccharomyces cerevisiaehgtSaccharomyces cerevisiae03 medical and health sciencesdomesticationalcoholic fermentationGenetics[SDV.BV]Life Sciences [q-bio]/Vegetal BiologyFermentacióGene conversionwineMolecular BiologyGeneDiscoveriesEcology Evolution Behavior and Systematics030304 developmental biologyWinefermentation alcooliqueBase Sequence030306 microbiologybiology.organism_classificationYeastFermentationrégion génomiqueBiologie végétaleSciences agricoles
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« Deirdre O’Mahony, artiste et archéologue des savoirs techniques indigènes »

2022

Les projets participatifs et collaboratifs de l’artiste irlandaise Deirdre O’Mahony, ancrés dans le monde rural du Burren, valorisent le patrimoine vernaculaire et les savoir-faire indigènes. Ses recherches de terrain portant sur l’évolution du paysage abordé comme milieu et les collaborations multiples qu’elle entreprend aboutissent à des propositions artistiques revisitant le land art. Ses interventions dans le paysage sont souvent complétées par des propositions dialogiques, dont le repas partagé, qui invite les participants à explorer l’histoire des lieux, les jeux de pouvoir qui s’y tissent et la pertinence des savoirs vernaculaires pour les enjeux de demain, notamment en matière de sé…

vernacular heritageland artcollaborative artfood securityindigenous technical knowledgeruralitépatrimoine vernaculairesavoirs techniques indigènessécurité alimentairepomme de terreBurrenfaminepotato[SHS.ART] Humanities and Social Sciences/Art and art historyart collaboratifperformancearchivesrurality
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