Search results for "QPC"
showing 10 items of 73 documents
Fungal ecology on grapes
2010
Microbial population of grapes is important from a technological point of view because it determines the quality of wine. But few studies have focused on fungal populations of grapes. A better knowledge of the fungal diversity on grapes, particularly as concerns species responsible for wine defects, may help efforts to control their development.We report the development of a PCR ITS-RFLP method as a fast and easy technique for identifying species of fungal genera present on grapes. By this methode, 41 different fungal species among 43 studied species belonging to 11 genera were characterized at the species level. Only P. thomii remained indistinguishable from P. glabrum. Using this PCR-ITS-…
Ecological role of mycotoxins produced by Fusarium graminearum : consequences of the presence of deoxynivalenol (DON) in crop residues on the soil mi…
2012
Fusarium graminearum is a plant pathogenic fungus, causing devastating disease “Fusarium head blight” (FHB) in cereals including wheat and maize. It also contaminates the grains with mycotoxins including deoxynivalenol (DON) which are toxic to human and animals. This disease has resulted in the serious losses in grain yield and quality. We established through a first bibliographic review that during off season fungus survives saprophytically on the crop residues (ecological habitat) and serves as primary inoculum for the next season crop. However, we noticed also that the literature was poor about the role mycotoxins could play in the establishment of F. graminearum in such a habitat. The m…
Etude de la stabilité de l'ADN suivant différentes modalités de conservation
2014
Rapport de stage BTS EA (Plateforme et VN) GenoSol; DEUG
Responses of soil bacterial and fungal communities to extreme soil drought and rewetting
2013
Question: The patterns of resource allocation and activity of the soil microbial community over the dry summer in Mediterranean grasslands are still largely unknown. The microbial response to summer desiccation reflects adaptation strategies, setting the stage for a large rainfall-induced soil CO2 pulse upon rewetting, an important component of the ecosystem carbon budget. Methods: In three California annual grasslands, the present (DNA-based) and potentially active (RNA-based) soil bacterial and fungal communities were tracked over a summer season and in response to controlled rewetting of intact soil cores. Phylogenetic marker genes for bacterial (16S) and fungal (28S) RNA and DNA were se…
Le statut dérogatoire des archives publiques présidentielles validé par le Conseil constitutionnel
2017
International audience
Quand la Cour de cassation fait la loi pénale et la contrôle !
2020
International audience
Non-renvoi d'une QPC. Revendication d'un bien objet d'un contrat continué à la demande des organes de la procédure
2017
International audience; (Com. 7 mars 2017, n° 16-22.000, arrêt n° 621 F-D QPC, D. 2017. 645 ; RJDA 2017, n° 355)
Role of nitric oxide synthases from Klebsormidium nitens: structural characterization and identification of protein partners
2022
Nitric oxide (NO) is an important cellular signalling molecule regulating various physiological processes, in both animals andplants. In animals, NO synthesis is mainly catalysed by NO synthase (NOS) enzymes. During biotic or abiotic stresses, NOSlike activities that are sensitive to mammalian NOS inhibitors have been detected in plants, although no sequences encodingthe well described mammalian NOS are highlighted in land plants. Interestingly, we identified NOS-like sequences in 20 algaespecies. Among them, NOSs are found in Klebsormidium nitens the model alga to study the early transition step from aquaticalgae to land plants.As mechanisms governing NO synthesis and signalling in green l…
Differential responses of bacterial and archaeal groups at high taxonomical ranks to soil management
2010
Little is known about abundances of the major bacterial taxa in agricultural soils and how they are affected by fertilization or other agricultural practices. Our aim was to determine the abundance and relative distribution of several bacterial phyla and one class, as well as the archaeal and crenarchaeal communities, and how they were affected by different fertilization regimes to examine whether specific responses of microorganisms could be identified at these high taxonomic ranks. We used real-time PCR with taxa specific primers to quantify the abundance of the Actinobacteria, Acidobacteria, Bacteriodetes, Firmicutes, Gemmatimonadetes, Verrucomicrobia, Alphaproteobacteria and Crenarchaeo…
Impact of various factors on the diversity of soil microorganisms in agricultural and forest soils
2014
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