Search results for "Unité"
showing 10 items of 65 documents
Recherche d’éliciteurs inducteurs de résistance chez les plantes : application en phytoprotection
2013
Effets de la variabilité inter-individuelles et des interactions intra-guildes sur les stratégies d'approvisionnement de carabes consommateurs de gra…
2017
Making a choice requires, implicitly, an investment of time in one behaviour at the expense of an investment in another. Being choosy would increase the risk of losing many food item opportunities to competitors, and is directly in conflict with other essential tasks such as predator avoidance. Individuals are thus expected to adjust their level of choosiness in response to the competition and predation context. The available behavioural ecological theory and the empirical ecology of carabids would suggest that competition and predation interference induces changes in the foraging behaviour of carabid individuals. Carabids typically operate within communities in which competition and predat…
Evolutionary ecology of the trans-generational immune priming in an insect
2012
Trans-generational immune priming (TGIP) is defined as the plastic enhancement of offspring's immunocompetence following an immune challenge of the females of the parental generation. In vertebrates, this phenomenon is well described, and is achieved by the maternal transfer of antibodies. In invertebrates however, it has only recently been described. Since invertebrates do not possess antibodies, the mechanism of this transmission remains unknown. If the offspring is exposed to the maternal infection, an elevated immunocompetence can help it cope better with it. Nonetheless, apart from this benefit, several cues indicate that the TGIP bears some fitness costs for individuals. The evolution…
Effects of adjuvants of the cholera toxin family on CD4 + T cell responses in a murine model of intrarectal immunization with rotavirus-like particles
2011
Mucosal immunization is an important goal of vaccine development to protect against pathogens that use mucosa as portals of entry. However, the use of non-replicating antigens requires the addition of adjuvants.Cholera-like enterotoxins, cholera toxin (CT) from Vibrio cholerae and the heat-labile enterotoxin (LT) from toxinogenic strains of E. coli, as well as the mutant LR-192G and their B subunits (CTB and LTB) have been shown to increase immune responses against unrelated co-administered antigens by mucosal routes. However, their mechanism of action is very complex and not completely understood and differences exist between holotoxins and B subunits and within molecules, differences exis…
Microglia and α-synuclein implication in Parkinson's disease
2011
Age-related neurodegenerative disorders like Parkinson’s disease take an enormous toll on individuals and on society. Despite extensive efforts, Parkinson’s disease remains incurable and only very limited treatments exist. Indeed, Parkinson’s pathogenesis is still not clear and research on its molecular mechanisms is ongoing. In this study, we focused our interest on two abnormal events occurring in Parkinson’s patients, namely α-synuclein aggregation and microglial activation. We first investigated α-synuclein and its abnormal polymerisation. For this purpose, we developed novel methods, which allowed the in vitro production of different types of α-synuclein oligomers. Using highly sensiti…
Etude de la perception et de la signalisation d'un nouvel éliciteur de l'immunité des plantes
2015
Il n'y a pas de pièce jointe, car certains résultats sont confidentiels SPE IPM UB; Master
Etude du mode d’action de l’acide β-aminobutyrique (BABA), un stimulateur des réactions de défense, sur l’homéostasie du fer chez Arabidopsis thaliana
2012
SPE IPM CT non renseigné car non soutenu par INRA; Master
Rôle des histones désacétylases de type 2 dans le contrôle de l’immunité chez les plantes
2014
Rapport de stage de Master II R SPE IPM; Master
Etude de la régulation d'une histone déacetylase de type 2 dans le contexte des réactions de défense des plantes
2012
Rapport de stage de Master 2, Spécialité Biochimie Biologie Cellulaire et Moléculaire SPE IPM CT non renseigné car non soutenu par INRA; Master
Étude de la régulation des calmodulines de Nicotiana tabacum par le monoxyde d’azote
2014
Rapport de stage de Master II R SPE IPM; Master