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Academic literature on the topic 'Hybridation soustractive suppressive'
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Dissertations / Theses on the topic "Hybridation soustractive suppressive"
Soto-Suarez, Mauricio. "Etude comparative de souches de Xanthomonas oryzae par des approches d’hybridations soustractives et de transcriptome." Perpignan, 2009. http://www.theses.fr/2009PERP1282.
Full textHaziza-Pigeon, Christelle. "Mise en évidence par hybridation suppressive soustractive de la surexpression de deux gènes dans le foie de souris surchargée en fer." Rennes 1, 1999. http://www.theses.fr/1999REN1S149.
Full textLessard, Marie-Hélène. "Découvrir les variations génomiques entre les souches de Lactococcus lactis ssp. cremoris par hybridation suppressive soustractive et par analyse de séquences multi-locus." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/25996/25996.pdf.
Full textCharneau, Sébastien. "Approches moléculaires des mécanismes mis en jeu en fin de schizogonie intraérythrocytaire de Plasmodium falciparum (agent du paludisme) par hybridation soustractive suppressive et puces à ADN." Paris, Muséum national d'histoire naturelle, 2005. http://www.theses.fr/2005MNHN0001.
Full textThe aim of this work was to study the differentiation of Plasmodium falciparum merozoite through its transcriptome. First, by suppression subtractive hybridization, we have realised a stage-specific cDNA library. We have identified 40 genes specifically expressed during merozoite morphogenesis, some expected as coding for merozoite proteins (27. 5%), the other coding for proteins of unknown function (72. 5%). We have characterized one of these proteins, the dynamin-2-like. Expressed only during schizogony, it could be a key-molecule of the merozoite differentiation and be involved in mitochondrial division. Second, by microarrays, we have identified 10 genes, as yet unreported, whose expression is significantly modulated by rottlerin, a protein kinase inhibitor that stops merozoite differentiation leading to the parasite lysis
Dordet-Frisoni, Emilie. "Staphylococcus xylosus : cartographie du génome et diversité génétique." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2007. http://tel.archives-ouvertes.fr/tel-00718141.
Full textMaigre, Laure. "Développement d'outils d'identification et de biotypage appliqués à l'étude des infections caprines dues à des mycoplasmes du groupe "Mycoplasma mycoides" (groupe "M. mycoides")." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10072.
Full textThe ‘M. mycoides’ cluster, a homogenous phylogenetic branch of the Mollicutes, includes 6 taxa which are responsible for diseases in ruminants, most of which are listed by the OIE. Their taxonomic identification, on which current diagnosis is based, is impaired by antigenic and genetic cross-reactivity and by the lack of a universal, intra-taxon PCR assay, especially for the Mcc, MmmLC and Mbg7 taxa. A suppression subtractive hybridization approach was developed to: 1) define molecular differences between these 3 taxa; 2) analyze the overall genetic diversity within the ‘M. mycoides’ cluster and 3) search for new markers useful for diagnosis. Results obtained here showed that several sequences are shared across taxa, with Mcc and MmmLC being very polymorphic compared to Mbg7 which is more homogeneous, representing a sort of chimera between Mcc and MmmLC. From these analyses, a specific PCR assay was designed for Mcc identification but, because of the genetic diversity existing within the ‘M. mycoides’, the taxonomic identification of new strain appears less and less relevant. Instead, regardless of their species, strain typing on the basis of their virulence would offer an alternative approach for diagnosis. We assessed this type of approach for the MmmLC taxon but so far, our attempts to uncover markers that would distinguish pathogenic strains from carrier strains, isolated from herds with no clinical history, have failed. The genetic continuum observed between strains is remnant of horizontal gene transfers and imposes the development of a more global approach for mycoplasmosis surveillance
Villalva, Grégoire Claire. "Profil d'expression génique dans les lymphomes anaplasiques à grandes cellules NPM-ALK positifs." Toulouse 3, 2004. http://www.theses.fr/2004TOU30201.
Full textCimerman, Agnès. "Analyse comparée de séquences génomiques partielles du phytoplasme du stolbur (PO) obtenus par hybridation soustractive suppressive : caracterisation des gènes ribF et stol1H10 codant la riboflavine kinase et une protéine hypothétique de surface absents du génome de "candidatus phytoplasma asteris" (OY-M)." Bordeaux 2, 2005. http://www.theses.fr/2005BOR21295.
Full textPhytoplasmas are phloem-restricted bacterial plant pathogens unvailable in culture. A modified Suppression Subtractive Hybridization (SSH) method allowed to isolate a nearly pure stolbur phytoplasma DNA from infected Catharanthus roseus periwinkle plants. Comparative analysis of 181 stolbur phytoplasma genetic loci (113 kbp) indicated that the G+C content of the stolbur phytoplasma genome should be about 26 %. Among 217 protein coding sequences, 83 % were homologous to 'Candidatus Phytoplasma asteris' (OY-M) genes. Two genes encoding proteins homologous to a mycoplasma surface protein and riboflavin kinase but absent in 'Ca. P. Asteris' were fully characterized. The stol-1H10 gene encodes a 59 kDa protein harbouring a putative signal peptide and a C-terminal transmembrane domain which should allow the matured 1H10 protein to be exposed at the phytoplasma surface. Such genes could play a role in the adaptation of stolbur phytoplasma to a specific family of insect vector
Normand, Alexia Delannoy. "Recherche de gènes impliqués dans l'installation du strongle Haemonchus contortus par une approche transcriptomique." Thesis, Tours, 2010. http://www.theses.fr/2010TOUR4034/document.
Full textGastro-intestinal nematodes such as Haemonchus contortus have a major impact on health of small ruminants world-wide. The control of infections remains largely based on anthelminthic treatments, but spreading of resistance has reduced their efficiency. An attractive solution would be the development of anti-nematode vaccines. Genes expressed during the early parasitic stage of H. contortus constituted our main targets. We have developed an approach based on SSH (Suppressive Subtractive Hybridization) technique and generated 4 subtracted cDNA libraries of H. contortus enriched in cDNA specifically expressed during L4 stage (five days post infection). 400 clones were analyzed by dot-blotand 51 clones regrouped in 10 contigs. All contigs were validated by RT-PCR. Homologues of candidates possessing a signal peptide were searched in T. colubriformis and T. circumcincta to evaluate their polymorphism. Recombinant proteins of theses candidates were produced and purified in order to know if they have a good vaccine potential with cross protection against two major gastro-intestinal nematodes
Lefebvre-Lavoie, Josiane. "Identification des gènes induits lors de la guérison cutanée chez le cheval, à l'aide de l'hybridation soustractive suppressive." Thèse, 2004. http://hdl.handle.net/1866/17481.
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