Search results for "pathogène"

showing 10 items of 36 documents

Immunity and other defenses in pea aphids, Acyrthosiphon pisum

2010

Background Recent genomic analyses of arthropod defense mechanisms suggest conservation of key elements underlying responses to pathogens, parasites and stresses. At the center of pathogen-induced immune responses are signaling pathways triggered by the recognition of fungal, bacterial and viral signatures. These pathways result in the production of response molecules, such as antimicrobial peptides and lysozymes, which degrade or destroy invaders. Using the recently sequenced genome of the pea aphid (Acyrthosiphon pisum), we conducted the first extensive annotation of the immune and stress gene repertoire of a hemipterous insect, which is phylogenetically distantly related to previously ch…

0106 biological sciencesAntimicrobial Peptide; Suppression Subtraction Hybridization; Hemocyte; Alarm Pheromone; Parasitoid WaspGenome InsectHemocyteGenes Insect01 natural sciencesGenomearthropodeAlarm PheromoneParasitoid WaspGenetics0303 health sciencesAphidbiologyAntimicrobial Peptidefood and beveragesGENOMIQUEINSECTEpuceronPEA APHIDSparasiteHost-Pathogen InteractionsSuppression Subtraction Hybridizationagent pathogèneréponse immunitaireACYRTHOSIPHON PISUMAntimicrobial peptidesPEA APHIDS;ACYRTHOSIPHON PISUM;INSECTE;GENOMIQUE010603 evolutionary biology03 medical and health sciencesImmune systemBuchneraImmunityStress PhysiologicalBotanyAnimalsLife ScienceSymbiosisGene030304 developmental biologyResearchgèneGene Expression ProfilingfungiImmunitybiochemical phenomena metabolism and nutritionbiology.organism_classificationAcyrthosiphon pisumGene expression profilingAphidsbacteriaResearch highlight[SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/SymbiosisGenome Biology
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Perception of pathogenic or beneficial bacteria and their evasion of host immunity: pattern recognition receptors in the frontline

2015

International audience; Plants are continuously monitoring the presence of microorganisms to establish an adapted response. Plants commonly use pattern recognition receptors (PRRs) to perceive microbe- or pathogen-associated molecular patterns (MAMPs/PAMPs) which are microorganism molecular signatures. Located at the plant plasma membrane, the PRRs are generally receptor-like kinases (RLKs) or receptor-like proteins (RLPs). MAMP detection will lead to the establishment of a plant defense program called MAMP-triggered immunity (MTI). In this review, we overview the RLKs and RLPs that assure early recognition and control of pathogenic or beneficial bacteria. We also highlight the crucial func…

plant–microbe interactionsPRRMini Review[SDV]Life Sciences [q-bio]flg22LysMplant-microbe interactionsPlant Sciencelcsh:Plant cultureBiologyevasionMicrobiologychemistry.chemical_compoundImmunityPlant defense against herbivory[SDV.BV]Life Sciences [q-bio]/Vegetal Biologylcsh:SB1-1110MAMPinnate immunityInnate immune systemfungiPattern recognition receptorbiology.organism_classificationchemistryMAMPImmunology[SDE]Environmental Sciencesplanteplant-microbe interactions;innate immunity;evasion;MAMP;PRR;flg22;FLS2;LysMPeptidoglycanFLS2bactérie pathogèneFunction (biology)Bacteria
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Expression de quelques PR protéines dans des cultures cellulaires et des plantes de tomate inoculées avec une souche pathogène ou une souche protectr…

2008

[SDV] Life Sciences [q-bio][SDE] Environmental Sciencestomateculture cellulaireprotéine[SDV]Life Sciences [q-bio][SDE]Environmental SciencesPR protéinesouche pathogènecellulesouche protectriceFusarium oxysporum
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La membrane plasmique des plantes : une clé dans la détection des agresseurs et le processus de défensefra

2014

SPE IPM; Le développement d’une méthode d’imagerie innovante a permis de montrer que la membrane plasmique des cellules végétales est une mosaïque de territoires présentant des propriétés biophysiques variées. Cette organisation est modifiée de façon très rapide en réponse à certaines molécules provenant de microorganismes, établissant un lien fonctionnel entre cette organisation et la mise en place des mécanismes de défense.

[SDV] Life Sciences [q-bio][SDE] Environmental Sciences[SDV]Life Sciences [q-bio]phases ordonnées[SDE]Environmental Sciences[SDV.BV]Life Sciences [q-bio]/Vegetal Biology[SDV.BV] Life Sciences [q-bio]/Vegetal Biologyinteraction plante-pathogèneradeaux membranairesfluidité membranairedegré d'ordre membranaire
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Exposition des eaux souterraines peu profondes à Escherichia coli résistant aux antibiotiques : approche hydrochimique pour identifier les sources et…

2016

L'antibiorésistance est une préoccupation croissante en termes de santé humaine et animale au niveau international. Le but du travail est de suivre l'impact sur la qualité de l'eau dans le bassin versant de l’Ouche et évaluer la capacité des E. coli productrices de BLSE de type CTX-M à se propager et survivre dans les eaux. Une stratégie pour l’échantillonnage des eaux de surface et souterraines a été déployée selon les contextes hydrogéologiques, l'utilisation des terres et les STEP. L’approche hydrochimique s’appuie sur l’analyse des paramètres tels que les nitrates et le bore complétés par l’analyse de Terres rares dont le gadolinium et le suivi de produits pharmaceutiques (caféine, carb…

[SDE] Environmental Scienceswaste water[SDV]Life Sciences [q-bio]pathogènespathogènes;hydrochimie;eaux usées;karst;eaux souterraines;waste water;pathogens;groundwater;karts;hydrochemistrypathogenshydrochimiekarstkartseaux souterraineshydrochemistry[ SDE ] Environmental Sciencesgroundwater[SDE]Environmental Sciences[SDV.BV]Life Sciences [q-bio]/Vegetal Biologyeaux uséespolluants émergents
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Mycorhization et viticulture : État des lieux et services écosystémiques rendus au vignoble

2017

Prod 2017-371 SPE IPM INRA UB; National audience

[SDE] Environmental Sciencesvignoblemycorhization;viticulture[SDV]Life Sciences [q-bio]champignonmycorhizationviticultureécosystèmebiodiversiténutrition minérale[SDV] Life Sciences [q-bio]stress[SDE]Environmental Sciencesassociation symbiotique[SDV.BV]Life Sciences [q-bio]/Vegetal Biologybiomasse[SDV.BV] Life Sciences [q-bio]/Vegetal Biologyagriculture raisonnéeagent pathogènesécheressesalinité
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Impact of vector dispersal and host-plant fidelity on the dissemination of an emerging plant pathogen

2012

International audience; Dissemination of vector-transmitted pathogens depend on the survival and dispersal of the vector and the vector's ability to transmit the pathogen, while the host range of vector and pathogen determine the breath of transmission possibilities. In this study, we address how the interaction between dispersal and plant fidelities of a pathogen (stolbur phytoplasma tuf-a) and its vector (Hyalesthes obsoletus: Cixiidae) affect the emergence of the pathogen. Using genetic markers, we analysed the geographic origin and range expansion of both organisms in Western Europe and, specifically, whether the pathogen's dissemination in the northern range is caused by resident vecto…

0106 biological sciencesRange (biology)Population DynamicsPopulation geneticslcsh:Medicine01 natural sciencessanté des plantesphytoplasme du stolburPhyletic PatternsVitisUrtica dioicahyalesthes obsoletuslcsh:SciencePathogenpathologie végétalePhylogenybactérie0303 health sciencesMultidisciplinaryEcologyEcologystolburUrtica dioicaAgricultureBiodiversityHost-Pathogen InteractionPhytoplasmaépidémiologieinsecte vecteuragent pathogèneResearch ArticleDNA BacterialGenetic MarkersPhytoplasmaEvolutionary ProcessesPhytopathology and phytopharmacyEmergenceBiologyDNA MitochondrialMicrobiologyVector Biology03 medical and health sciencesmollicute phytopathogèneIntegrated ControlintéractionEvolutionary SystematicsParasite EvolutionBiologyHybridizationMicrobial Pathogens030304 developmental biologyPlant DiseasesEvolutionary BiologyPopulation BiologyHost (biology)lcsh:Rtransmission de la maladiebiology.organism_classificationPhytopathologie et phytopharmacievariation génétiqueOrganismal Evolution[SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacyEmerging Infectious DiseasesVector (epidemiology)Microbial EvolutionBiological dispersallcsh:QParasitologyPest ControlPopulation EcologyZoologyEntomologyPopulation Genetics010606 plant biology & botanyCoevolution
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Identification, ecology and use blood meals from hematophagous Diptera (Glossinidae, Stomoxys and Tabanidae) for noninvasive sampling of wildlife in …

2015

The contact between human and wild fauna has considerably increased during these last decades due to the increase of human population size but also to conservation policies. As a consequence, the number of zoonotic diseases soared with a mean of six new infectious diseases per year, 75% of whom being vectorially transmitted. The way to avoid the human contamination by these emergent diseases is based on the efficient vector control resulting from a deep knowledge of the ecology and the feeding behavior of the different vector species. During our work, we have identified and characterized the ecology of 6 tsetse species (Glossina palpalis palpalis, G. fuscipes fuscipes, G. fusca congolense, …

Parc nationaux[SDV.MHEP] Life Sciences [q-bio]/Human health and pathologyHematophagous fliesHuman activityClimatic seasonsConservationWildlifeRepas sanguinsFaune sauvagePathogen screeningSaisons climatiques[SDE.BE] Environmental Sciences/Biodiversity and EcologyBlood mealsNon-invasive samplingÉco-distributionÉchantillonnage non-invasif[SDV.EE.SANT] Life Sciences [q-bio]/Ecology environment/HealthNational parksGabonActivités humainesMouches hématophagesCriblage de pathogènes
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Effets des micro-doses de sucre chez la vigne en conditions contrôlées

2019

National audience

[SDV] Life Sciences [q-bio]« priming »[SDV]Life Sciences [q-bio]lépidoptèrespathogènesComputingMilieux_MISCELLANEOUSdiagnostic moléculairecomposés volatils
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Ecologie des champignons phytopathogènes du sol. Intérêt pour les cultures. Mobilité des foyers d'infection de rhizoctonia solani sur sol cultivé en …

2011

communication orale invitée; absent

[SDV.SA]Life Sciences [q-bio]/Agricultural sciences[SDV.SA] Life Sciences [q-bio]/Agricultural sciencessolRhizoctonia solanichampignonphytopathogèneinfectioncultureécologieR. solanistomatognathic diseasesbetteravefoyer d'infection[ SDV.SA ] Life Sciences [q-bio]/Agricultural sciences
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