Dissertations / Theses on the topic 'Virus de la mosaïque du chou-fleur'
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Kubina, Julie. "Étude de l'export nucléaire des ARNm du virus de la mosaïque du chou-fleur (CaMV) chez Arabidopsis thaliana." Thesis, Strasbourg, 2019. http://www.theses.fr/2019STRAJ052.
Full textIn metazoa most of the mature cellular and viral mRNAs are exported out of the nucleus via the TAP-p15 export receptors and their associated TREX-1 complex while a minority is exported by the exportin CRM1. In plants, this fundamental process is poorly known and even unknown for DNA phytoviruses such as CaMV and its 19S and 35S mRNAs. Our aim was to clarify this important but never studied step in CaMV life cycle in order to decode the mechanisms of mRNAs nuclear export in the model plant Arabidopsis thaliana. Our main results show that CaMV uses both the TREX-1 complex pathway as well as CRM1 to export its 35S mRNAs, and that the precursor of the viral proteinase and retrotranscriptase, P5, is important for the nuclear export by TREX-1. We also demonstrated that CaMV 35S RNA leader region and especially its highly structured stem-loop is a cis-acting element recognized by the mRNAs nuclear export machinery
Champagne, Julie. "Étude de la localisation, la phosphorylation et éléments structuraux des extensions N- et C- terminales de la protéine de la capside du virus de la mosaïque du chou-fleur." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24569/24569.pdf.
Full textBouton, Clément. "Etude de l'épissage alternatif de l'ARN 35S du virus de la mosaïque du chou-fleur (CaMV) et de l'export nucléaire des ARN viraux." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAJ036/document.
Full textAlternative splicing and nuclear export of the pregenomic 35S RNA are two steps of the infectious cycle of Cauliflower mosaic virus (CaMV) that are poorly understood. Four 35S RNA spliced isoforms were described in previous reports. Our results show that at least twelve spliced 35S RNA isoforms are generated upon infection. Alternative splicing is important for CaMV infectivity but apparently, it does not expand CaMV proteome. Its role is difficult to assess because inactivation of splice donor or acceptor sites is constantly rescued by the use of cryptic sites. In order to maintain CaMV genomic integrity, unspliced 35S RNA must be exported to the cytoplasm. Our work has been mainly focused on developing experimental tools dedicated to study the 35S RNA nuclear export pathway as well as viral sequences and proteins potentially involved in this process
Bureau, Marina. "Etude de la protéine P6 du virus de la mosaïque du chou-fleur (CaMV) : localisation cellulaire et identification de partenaires d'interaction." Paris 6, 2004. http://www.theses.fr/2004PA066032.
Full textSchmidt, Isabelle. "La transmission du virus de la mosaïque du chou-fleur (CaMV) par puceron : étude du mécanisme moléculaire d'action du facteur assistant de la transmission (FAT)." Tours, 1996. http://www.theses.fr/1996TOUR4002.
Full textHaas, Gabrielle. "Étude de l’importation nucléaire de la protéine P6 du virus de la mosaïque du chou-fleur et de son rôle dans la suppression du RNA silencing antiviral." Université Louis Pasteur (Strasbourg) (1971-2008), 2007. https://publication-theses.unistra.fr/public/theses_doctorat/2007/HAAS_Gabrielle_2007.pdf.
Full textThe P6 protein of Cauliflower mosaic virus (CaMV), a plant pararetrovirus, is a key component of the CaMV replication cycle. This multifunctional protein is involved in host specificity, symptoms expression, and in viral proteins synthesis from a polycistronic viral RNA through a noncanonical strategy. It also forms cytoplasmic inclusion bodies, called viroplasms, which are considered as viral factories. Finally, recent studies indicate that P6 shuttles between the nucleus and the cytoplasm, suggesting that the protein has one or several nuclear functions. To elucidate this aspect, we first studied the nuclear import properties of P6. Directed mutagenesis experiments combined to protein-protein interaction assays revealed that P6 contains one canonical and one non-conventional nuclear localization signal (NLS), both of which are cooperatively required for its import through the importin α pathway. In addition, in planta experiments showed that P6 nucleocytoplasmic shuttling is essential for virus infectivity demonstrating the importance of its nuclear function(s). Through genetic approaches, we have uncovered one of these functions: nuclear P6 suppresses RNA silencing, a paneukaryotic mechanism for regulation of gene expression, involved in antiviral defence, in development and in maintenance of nuclear genome integrity
Hébrard, Eugénie. "Caractérisation du facteur assistant de la transmission du virus de la mosai͏̈que du chou-fleur (CaMV) : aspects structuraux et fonctionnels." Montpellier 2, 2001. http://www.theses.fr/2001MON20040.
Full textThiébeauld, Odon. "Réinitiation de la traduction dépendante de TAV au cours de l’infection des plantes par le virus de la mosaïque du chou-fleur : Caractérisation fonctionnelle d'une nouvelle protéine cellulaire RISP." Université Louis Pasteur (Strasbourg) (1971-2008), 2007. https://publication-theses.unistra.fr/public/theses_doctorat/2007/THIEBEAULD_Odon_2007.pdf.
Full textThe cauliflower mosaic virus has developed an original translation reinitiation strategy to synthesize viral proteins from polycistronic mRNA. This strategy is very complex and not very well-known but involves the viral protein TAV (transactivator/ viroplasmin) wich activates alternative cellular pathways to allow translation reinitiation of major open reading frames on the polycistronic viral RNA. In my Phd, we have shown that TAV reinitiation function depends on a novel cellular protein RISP, reinitiation supporting protein. RISP physically interacts with TAV via TAV's essential transactivation domain, and may bind the 60S ribosomal subunit. Transient expression of RISP in plant protoplasts strongly increases TAV transactivation activity. We show TAV/RISP/60S complex formation in vitro, recruitment of RISP by TAV to polysomes, and suggest the involvement of the TAV/RISP/60S complex in efficient 60S recruitment to polysomes thus increasing the probability of the reinitiation event
KERLAN, CAMILLE. "Epidemiologie et variabilite du virus de la mosaique du chou-fleur en culture de chou-fleur en bretagne de 1984-1990." Rennes 1, 1992. http://www.theses.fr/1992REN10050.
Full textMesnard, Jean-Michel. "Le Gène III du virus de la mosaïque du chou-fleur, CaMV." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376163256.
Full textMesnard, Jean-Michel. "Le gene iii du virus de la mosaique du chou-fleur (camv)." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13148.
Full textMOUGEOT, JEAN-LUC. "Etude du processus d'encapsidation du virus de la mosaique du chou-fleur (camv)." Université Louis Pasteur (Strasbourg) (1971-2008), 1995. http://www.theses.fr/1995STR13019.
Full textDAUTEL, SANDRINE. "Maturation du produit du gene iii du virus de la mosaique du chou-fleur." Université Louis Pasteur (Strasbourg) (1971-2008), 1996. http://www.theses.fr/1996STR13184.
Full textGiband, Marc. "Expression et localisation de trois gènes du virus de la mosaïque du chou-fleur (CaMV)." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37605423b.
Full textGiband, Marc. "Expression et localisation de trois genes du virus de la mosaique du chou-fleur (camv)." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13113.
Full textAlbrecht, Huguette. "Les Produits des gènes I et IV du virus de la mosaïque du chou-fleur, CaMV." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37611186n.
Full textAlbrecht, Huguette. "Les produits des genes i et iv du virus de la mosaique du chou-fleur (camv)." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13178.
Full textRouan, Dominique. "Transfert direct de gênes chez les Brassica : application à la résistance au virus de la mosai͏̈que du chou-fleur." Toulouse, INPT, 1990. http://www.theses.fr/1991INPT026A.
Full textMenissier, de Murcia Josiane. "Le Virus de la mosaïque du chou-fleur structure du génome, mise en évidence de deux activités enzymatiques associées aux virions." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37599596g.
Full textKIRCHHERR, DANIEL. "Fonction des produits des genes 1 et 3 et expression du gene 4 du virus de la mosaique du chou-fleur." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13142.
Full textLEH, VERONIQUE. "Etude des interactions entre proteines engageant les produits des orf iii et vi du virus de la mosaique du chou-fleur." Université Louis Pasteur (Strasbourg) (1971-2008), 1999. http://www.theses.fr/1999STR13180.
Full textWURCH, THIERRY. "Etude de la diffusion de cellule a cellule d'un pararetrovirus de plantes : le virus de la mosaique du chou-fleur (camv)." Université Louis Pasteur (Strasbourg) (1971-2008), 1992. http://www.theses.fr/1992STR13205.
Full textHaas, Muriel. "Protéines multifonctionnelles P3 et P6 du virus de la mosai͏̈que du chou-fleur (CaMV) : localisation subcellulaire et interaction avec d'autres partenaires protéiques." Université Louis Pasteur (Strasbourg) (1971-2008), 2003. http://www.theses.fr/2003STR13030.
Full textMultifunctional proteins P3 and P6 of cauliflower mosaic virus (CaMV): subcellular localization and interaction with other proteins. The main goal of my thesis was to study the mechanisms involved in the formation of cytoplasmic inclusion bodies, called viroplasms in CaMV-infected cells and to determine the intracellular localization of the ORF III product in order to determine its function(s) during systemic infection of the plant. The dense viroplasms, formed by the multifunctional P6 protein, correspond to inclusion bodies in which viral replication and morphogenesis take place. By cellular and molecular approaches, we found that the 83 N-terminal amino acids of P6 mediate P6-P6 interactions. Nevertheless, this domain is unable per se to form agregates suggesting that others domains of P6 and/or cellular factors are involved in this process. Moreover, we demonstrate for the first time that P6 has a nuclear localization and that it interacts with the import and export machinery of the cell. The P3 protein is also a multifunctional protein. We show that it plays a fundamental role in the transmission of CaMV by its aphid vector. It is also required for systemic infection of the plant. Its subcellular localization was studied using a CaMV genome encoding a P3 protein fused to a fluorescent tag, EGFP. This chimeric genome is infectious but unstable, because of the elimination of the EGFP encoding sequence during the viral cycle. Nevertheless, we found that P3 could form aggregates and that it was trapped inside the dense and the lucent viroplasms formed by CaMV P6 or P2 proteins, respectively. Finally, we show that P3 interacts with CaMV P6 protein but no function has yet been found for this interaction
PASSELEGUE, EUGENIE. "Introduction chez brassica oleracea l. Var. Botrytis l. De genes du virus de la mosaique du chou-fleur (camv) via agrobacterium tumefaciens." Rennes 1, 1995. http://www.theses.fr/1995REN10023.
Full textHaas, Gabrielle Keller Mario. "Étude de l'importation nucléaire de la protéine P6 du virus de la mosaïque du chou-fleur et de son rôle dans la suppression du RNA silencing antiviral." Strasbourg : Université Louis Pasteur, 2007. http://eprints-scd-ulp.u-strasbg.fr:8080/873/01/HAAS_Gabrielle_2007.pdf.
Full textHervé, Christine. "Recherche d'une resistance aux caulimovirus par l'introduction du gene de la proteine de capside du virus de la mosaique du chou-fleur dans des plantes hotes." Toulouse 3, 1993. http://www.theses.fr/1993TOU30086.
Full textBalázs, Ervin. "Contribution d'un vecteur hybride pour le transfert de gènes chez les plantes supérieures utilisation de séquences virales appartenant à l'ADN du virus de la mosaïque du chou-fleur." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37595675t.
Full textBALAZS, ERVIN. "Construction d'un vecteur hybride pour le transfert de genes chez les plantes superieures : utilisation de sequences virales appartenant a l'adn du virus de la mosaique du chou-fleur." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13123.
Full textThiébeauld, Odon Ryabova Lyubov. "Réinitiation de la traduction dépendante de TAV au cours de l'infection des plantes par le virus de la mosaïque du chou-fleur caractérisation fonctionnelle d'une nouvelle protéine cellulaire RISP /." Strasbourg : Université Louis Pasteur, 2008. http://eprints-scd-ulp.u-strasbg.fr:8080/872/01/THIEBEAUD_Odon_2007.pdf.
Full textThèse soutenue sur un ensemble de travaux. Titre provenant de l'écran-titre. Bibliogr. 18 p.
Laquel, Patricia. "Contribution à l'étude de la réplication du génome du virus de la mosaïque du chou-fleur, mise en évidence du rôle joué par la protéine codée par le gène V du DNA viral." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37598987c.
Full textGuidasci, Thierry. "Deux aspects de la biologie moleculaire du virus de la mosaique du chou-fleur (camv) : strategie de traduction de la protease codee par le gene v et etude de l'activite enzymatique impliquee dans la maturation du produit du gene iii." Université Louis Pasteur (Strasbourg) (1971-2008), 1994. http://www.theses.fr/1994STR13016.
Full textCentis, Sonia. "Transfert de fragments de genes d'un caulimovirus dans le colza (brassica napus l. ) : obtention de plantes transgeniques." Toulouse 3, 1988. http://www.theses.fr/1988TOU30198.
Full textChampagne, Julie. "Étude de la localisation, la phosphorylation et éléments structuraux des extensions N- et C-terminales de la protéine de la capside du virus de la mosaïque du chou-fleur /." 2007. http://www.theses.ulaval.ca/2007/24569/24569.pdf.
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