Search results for "marque"
showing 10 items of 93 documents
Les phénols de la lignine et le 13C, traceurs de l'origine des matières organiques du sol
2001
Abstract In spodosols of Gascony (France), conversion of maritime pine stands into maize cropping leads to an incorporation of maize organic matter, which changed the isotopic (δ13C) and phenolic signature in A and L horizons of soil. Hydrolysis of phenol lignin in forests and cultivated soils showed the predominance of vanillic units under forest and the early but moderate incorporation of cinnamic acids. Incorporation of syringic units appeared higher, related to a large maize production of stable syringic phenols. Syringic units represented a long-term marker of maize inputs in soils, whereas vanillic units revealed the degradation of forest organic matter.
Diversité génétique et aromatique de la truffe de Bourgogne
2013
Truffles are ectomycorrhizal Ascomycota fungi belonging to the Tuberaceae family and more specifically to the Tuber genus. More than thirty Tuber species are currently described in Europe. In this thesis, we specifically focused on the Tuber aestivum-uncinatum model. This truffle is commonly called "Burgundy Truffle" and has a gastronomic and cultural interest.The first part of this thesis focused on the taxonomic status of the Burgundy truffle (Tuber uncinatum). For this, we used a multi-marker approach combining several genetic markers commonly used at the interspecific scale. Our analyses showed that the two taxa, Tuber aestivum (summer truffle) and Tuber uncinatum are conspecific.In the…
Projet SALAMANDER : Biomarqueurs salivaires du régime méditerranéen associés à une protection au long terme contre le diabète de type 2
2017
Identification of a circulating biomarker highly associated to retinal omega-3 polyunsaturated fatty acid content: the BLISAR project
2019
International audience
Association of a predictor of retinal omega-3 polyunsaturated fatty acids with advanced age-related macular degeneration: the BLISAR project
2019
International audience
HSP70-exosomes for the monitoring of cancer
2020
Actually, cancer is unfortunately part of our daily life. Although it is better treated, more and more people are affected. Cancer research is working on two side: therapy and diagnosis. The next-generation therapies show wonderful results that were never reached so far, but diagnosis improvement can also save lives. It is well established that the earlier the cancer is diagnosed, the better the survival rate. Idem for the follow-up of the disease. In this context of precision and earliness, liquid biopsy spark interest and seems to have a bright future. It consists in the investigation of liquid analytes, particularly within the bloodstream, such as circulating tumor DNA, circulating tumor…
DIAGSOL : development of a new functional marker of exposure to herbicides B-triketones in an agricultural soil
2020
Numerous herbicides target an enzyme found not only in weeds but also in « non-target organisms » such as microorganisms. This proof-of-concept study aims to use microbial gene encoding the targeted enzyme or the targeted enzyme itself as a marker for herbicide exposure in soils. The hppd gene and the encoded enzyme (HPPD; 4-hydroxyphenylpyruvate dioxygenase), targeted by B-triketone herbicides, are the subject of this study. In silico analyses reveal that the hppd gene is spread out in all bacterial phyla. Primers specific to this gene were designed. This primer pair is used to measure the abundance, the composition and the diversity of the hppd bacterial community in soil microcosms expos…
L'émergence des "marques ombrelles" portant sur des médicaments et des dispositifs médicaux frontières : une source iatrogénie et une pratique trompe…
2017
International audience; L’apparition de plus en plus fréquente de dispositifs médicaux frontières avec le médicament conduit à induire le patient en erreur sur la nature du produit consommé et augmente le risque d’iatrogénie médicamenteuse. Ce risque est exacerbé quand le fabricant décide de regrouper des médicaments et des dispositifs médicaux frontières sous une même marque : la marque ombrelle. Dès lors se pose la question de la pratique commerciale trompeuse et du maintien d’une telle marque que l’on pourrait qualifier de déceptive.
Biodiversité intraspécifique chez Oenococcus oeni
2010
National audience
Diversité génétique au sein de la forme spéciale cyclaminis de Fusarium oxysporum et recherche d’un marqueur spécifique
2014
Le cyclamen est la 3e plante fleurie la plus vendue en France. Une des maladies dommageables de cette culture est la fusariose, causée par Fusarium oxysporum f. sp. cyclaminis (FoCy). Cette forme spéciale, inféodée au cyclamen n’est pas différenciable des autres formes spéciales et souches saprophytes. En se développant dans le xylème, FoCy entraîne la mort de la plante. Quand les symptômes externes apparaissent, la plante est condamnée. La lutte chimique est inefficace, la lutte variétale est inexistante, et les mesures prophylactiques sont difficilement applicables. Pour détecter le pathogène précocement et améliorer la lutte, nous nous sommes intéressés à sa diversité génétique. Pour cel…