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Artykuły w czasopismach na temat "Pomme de terre – Variabilité":
GEBRE SELASSIE, Kahsay, Georges MARCHOUX, Brigitte DELECOLLE i Edmond POCHARD. "Variabilité naturelle des souches du virus Y de la pomme de terre dans les cultures de piment du sud-est de la France. Caractérisation et classification en pathotypes". Agronomie 5, nr 7 (1985): 621–30. http://dx.doi.org/10.1051/agro:19850708.
Barasubiye, T., C. Richard i D. Dostaler. "Caractérisation pathologique et physiologique de deux populations de Verticillium albo-atrum isolées de la luzerne et de la pomme de terre". Phytoprotection 75, nr 2 (12.04.2005): 53–67. http://dx.doi.org/10.7202/706052ar.
Rousselle, Patrick, Daniel Ellisseche i Françoise Rousselle. "La pomme de terre". Cahiers d'outre-mer 45, nr 179 (1992): 303–14. http://dx.doi.org/10.3406/caoum.1992.3446.
Begue, Yves. "Agriculture et pomme de terre". Cahiers Agricultures 17, nr 4 (lipiec 2008): 333–34. http://dx.doi.org/10.1684/agr.2008.0221.
Marie-Luce Quashie, Akossiwoa. "La pomme de terre en Afrique". Cahiers Agricultures 17, nr 4 (lipiec 2008): 413. http://dx.doi.org/10.1684/agr.2008.0223.
Delcroix, Odile, i Pierre Limouzin. "La filière pomme-de-terre en Picardie". Hommes et Terres du Nord 4, nr 1 (1990): 281–83. http://dx.doi.org/10.3406/htn.1990.2301.
Nay, Sylvie. "L'exorciste et la pomme de terre brûlante". Actualités en analyse transactionnelle 133, nr 1 (2010): 46. http://dx.doi.org/10.3917/aatc.133.0046.
Song, Botao, Xianpu Guo, Jun Liu i Conghua Xie. "L’industrie de la pomme de terre en Chine". Cahiers Agricultures 17, nr 4 (lipiec 2008): 343–48. http://dx.doi.org/10.1684/agr.2008.0218.
Semal, Jean. "FAO 2008 : annèe de la pomme de terre". Cahiers Agricultures 17, nr 4 (lipiec 2008): 415. http://dx.doi.org/10.1684/agr.2008.0222.
Lutaladio, NeBambi, i Adam Prakash. "La pomme de terre : histoire et développement économique". Cahiers de Nutrition et de Diététique 45, nr 6 (grudzień 2010): S5—S16. http://dx.doi.org/10.1016/s0007-9960(10)70003-1.
Rozprawy doktorskie na temat "Pomme de terre – Variabilité":
Guyader, Sébastien. "Evaluation du potentiel de variabilité du potato leafroll virus (Luteoviridae, poleovirus) et identification de quelques facteurs de sélection". Rennes 1, 2003. http://www.theses.fr/2003REN10049.
Sevestre, François. "Mise en oeuvre de l’édition génomique par CRISPR/Cas9 pour l’étude fonctionnelle des amidon-synthases chez la pomme de terre (Solanum tuberosum)". Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1S109.
The potato is a plant of the solanaceae family that is cultivated for its tubers. This reserve organ is a staple food for many populations around the world. It is rich in starch, a polysaccharide stored in the form of insoluble granules in specialized organelles: the amyloplasts. Starch metabolism is complex and finely regulated by many enzymes including starch synthases. These enzymes are responsible for creating new α-1,4-type O-glucosidic bonds. Several isoforms of starch synthases have already been characterized in plants (GBSS, SS1, SS2, SS3, SS4 and SS5). In addition, a new isoform called SS6 (Starch Synthase 6) has recently been identified in the laboratory by proteomic analysis in potato. Functional genomics in potato were, until recently, limited by the tetraploid character and the uniquely vegetative mode of reproduction of cultivated varieties. The recent emergence of site-directed mutagenesis and in particular of the CRISPR/Cas9 system removes this barrier, in particular allowing the targeted inactivation of genes.First, we sequenced the genome of the tetraploid potato variety Désirée. This analysis revealed a strong intrinsic polymorphism. I used this data to map polymorphisms and to develop a target design assistance tool in potato genomic editing. I then characterized the starch from plants previously mutated at the GBSS locus by CRISPR/Cas9 and demonstrated an accumulation of SS2 and GWD in the starch. Consequently, the phosphate contents, in particular at the C6 position of the glucose residues, are increased. These results open new perspectives in understanding the metabolism and assembly of enzymes with starch polysaccharides.We have also shown that SS6 is present in dicotyledons except Brassicaceae. The recombinant version of the potato protein expressed in E.coli is active on glycogen and allows the elongation of glucans from DP2 to DP5. In addition, the protein fused with GFP and expressed in planta is localized in the amyloplast, confirming the observations initially made in the laboratory during the characterization of the proteome associated with potato starch. I studied the function of SS6 in planta by producing KO lines for the corresponding gene by CRISPR/Cas9 and by overexpressing the native protein under the control of the 35S promoter. Overexpression of the gene causes a decrease in the mean diameter of the starch grains at the late stage of tuber development suggesting that the enzyme is involved in the regulation of the size and therefore supposedly the number of starch grains. We also observed slight changes in starch structure in the ss6- knockout lines. Indeed, the amylopectin of the mutant lines shows a decrease in glucans from DP6 to DP14 and an increase in glucans from DP15 to DP21. Although subtle, these changes corroborate the activity observed with the recombinant protein in vitro. Inactivation of SS6 may be partially offset by the activity of other redundant starch synthases, as has been observed in many cases and in many species. The generation of combinations of mutations for SS6 and other starch synthase genes will provide insight into the role of this enzyme in the metabolism of starch storage
Carpentier, Jean. "Variabilité moléculaire et mode évolutif du gène de virulence Gp-Rbp-A et du co-Facteur RanGap2 impliqués dans l’interaction incompatible entre le nématode Globodra pallida et la pomme de terre Gpa2 résistante". Rennes, Agrocampus Ouest, 2012. http://www.theses.fr/2012NSARC105.
In order to control the potato cyst nematode. Globodera pallida, using resistant varieties is now advocated. Nevertheless, most of the resistance genes, including ther major gene Gpa2 are efficient only against a lim ited number of nematode populations. Moreover Gpa2 needs the presence of a co-factor – RanGAP2 – to recognize the nematode avirulence protein coded by the Gp-RBP-1 gene and to trigger the plant defence mechanisms. The present work aims to characterize the efficiency spectrum of Gpa2. Our goals were to identify the Gp-Rbp-1 polymorphisms affecting the outcome of the interaction with Gpa2 and the polymorphisms in RanGAP2 that can be used to expand the range of G. Pallida populations controlled by Gpa2. We have shown tha susceptibility of a potato cultivar expressing Gpa2 to a G. Pallida population. Furthermore, among the eight sites of Gp-Rbp-1 found under positive selection, the sole variation at amino acid position 187 (proline/serine) remained sufficienet to explain the recognition of GP-RBP 1 by GPA2. Despite numerous sites found to have evolved under purifying selection, RanGAP2 have two polymorphic sites (amino acids 106 and 237) and one insertion/deletion of interest. Variability observed at these sites do not enable the recognition of virulent variants (non-recognized) of GP-RBP-1 by GPA2 but seems to affect intensity of the hypersensitive response triggered by the recognition of avirulent variants of Gp Rbp-1 GPA2
Ravelomanantsoa, Santatra Herilalaina. "Biologie des populations du complexe d'espèces Ralstonia solanacearum appliquée à l'épidémiologie de la bactériose vasculaire de la pomme de terre à Madagascar". Thesis, La Réunion, 2016. http://www.theses.fr/2016LARE0017/document.
This thesis is exploring genetic diversity, population structure and molecular epidemiology of the Ralstonia solanacearum species complex (Rssc) causing potato bacterial wilt outbreaks in Madagascar. We characterized a large collection of strains (n=1224; 75 sites) collected from potato production areas. Surprisingly, the large outbreaks were associated with IIB-1 strains (Brown rot) while a few were associated with phylotypes I and III. This is the first report of phylotype IIB-1 in Madagascar. The IIB-1 strains were genotyped based on MLVA (RS2-MLVA9). And Malagasy phylotype IIB-1 clustered with worldwide distributed strains. Fine scale genetic investigation suggested three clonal populations that were introduced and spread through latently infected tuber-seeds. Phylotype III strains were genotyped with the highly discriminatory RS3-MLVA16 scheme we developed. Genetic population analyses revealed a high genetic diversity within phylotype III strains that geographically structured into 11 clonal populations. This support the endemic character of the phylotype III population in Madagascar and suggests no transmission with potato tubers. Malagasy strains were distinct from continental African strains. A clear-cut epidemiological profile is shown between IIB-1 and III strains. Genetically, no bacterial wilt resistance properties were shown for the most popular Malagasy potato cultivars, except two cultivars: 720118 and 800934 that showed strong resistance to phylotype I-31 strain that are predominantly distributed in the Indian Ocean. This study offered tool to genotype phylotype III strains and gives an insights into population structure and epidemiology of the Rssc
Kettani, Halabi Mohamed. "Etude de la diversité de Pectobacterium spp et des effets induits par les lipopolysaccharides chez les plantes". Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-01070631.
MASSON, JEAN. "Hybridation somatique chez la pomme de terre". Paris 11, 1990. http://www.theses.fr/1990PA112211.
Bouchard, Édith. "Interaction tritrophique entre une plante de pomme de terre transgénique et Perillus bioculatus, un prédateur du doryphore de la pomme de terre". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ48999.pdf.
Duceppe, Marc-Olivier. "Protéome et bilan photosynthétique de la pomme de terre (Solanum tuberosum L.) en réponse au doryphore de la pomme de terre (Leptinotarsa decemlineata Say)". Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/27966/27966.pdf.
Higher plants have developed, over time, a variety of protection mechanisms allowing them to survive and cope with a variety of biotic stress cues in their surrounding environment. The main goal of this three-part doctoral thesis was to characterize the biochemical and the physiological responses of potato (Solanum tuberosum) to defoliation by the coleopteran insect herbivore Colorado potato beetle (Leptinotarsa decemlineata). The first objective of the project was to characterize the impact of the insect on the host plant's leaf proteome, using as a model plants treated with potato beetle larvae, mechanically wounded plants and plants infested with a sucking/piercing insect, the potato aphid (Macrosiphum euphorbiae). The second objective was to gain some insight about the proteome of potato beetle oral secretions, with the aim of assessing the relative incidence of insect and host plant proteins at wound sites generated during insect feeding. The third objective, finally, was to determine the impact of leaf proteome alterations on photosynthetic capacities of the host plant, and to determine the possible impact of the plant's own molecular constituents on the responses observed. In brief, our results showed that several proteins involved in the primary and the secondary metabolisms, including photosynthesis-related proteins, were regulated in leaves in response to potato beetle feeding. However, the negative impact of the insect on several photosynthetic proteins, notably photosystem I proteins, only had negligible effects on the light capture process by the plant. The second phase of photosynthesis, on the other hand, was significantly affected by the insect, presumably via molecular effectors from both the insect and the host plant itself. These findings suggest, overall, a specific, but somewhat limited impact of Colorado potato beetle larvae on the leaf proteome and photosynthetic capacities of the potato host. They also suggest the possible induction of compensatory mechanisms in planta and the high plasticity of primary metabolism functions in the plant upon herbivore feeding.
Kröner, Alexander. "Contribution différentielle des réactions de défense générale aux résistances quantitatives de la pomme de terre à Pectobacterium atrosepticum et à Phytophthora infestans". Rennes, Agrocampus Ouest, 2012. http://www.theses.fr/2012NSARC106.
Using genetic resistance (especially quantitative resistance) is a major challenge for the design of more durable and environmentally friendly strategies in crop protection. If quantitative resistance is considered durable, underlying mechanisms are still poorly understood. The objective of the present work is to identify key elements underlying this type of resistance to favour its integration in crop protection. It started with the hypothesis that quantitative resistance is linked to quantitative differences (intensity and/or timing) of defence responses induced in the host plant by pathogen derived elicitors. We checked this hypothesis on tubers from 5 potato cultivars with variable levels of resistance against two taxonomically distant pathogens with distinct infectious strategies: the necrotrophic bacterium Pectobacterium atrosepticum causing soft rot and the hemi-biotrophic oomycete Phytophthora infestans causing late blight. A resistance ranking between cultivars has been established by quantification of disease symptoms caused by these pathogens. Simultaneously, induction of defence responses by the bacterial lipopolysaccharide (LPS) and by a concentrated culture filtrate (CCF) from the oomycete was studied by measuring the activity of phenylalanine ammonia-lyase (PAL) and the accumulation of phenolic compounds. Results provide evidence for a positive link between the level of quantitative resistance of potato to P. Atrosepticum and the intensity of defence induced by CCF, but a negative link for the pathosystem potato – P. Infestans. We also identified individual phenolic compounds positively linked with resistance level. Some of them (i. E. Chlorogenic acid and rutin) diminish growth of both pathogens in vitro, but others (i. E. Nicotiflorin) have no direct toxic effect. This suggests efficacy of inducible defence to be based on a combined action of direct and indirect effects. Taken together, our results point us to a more complex mechanistic model for quantitative resistance than supposed by our initial hypothesis, integrating physiological aspects of induced resistance with infection linked life history traits of the pathogen
Pépin, Geneviève. "Résistance au virus Y de la pomme de terre (PVY) chez des lignées transgéniques de pomme de terre exprimant un inhibiteur de protéases de type cystéine". Thesis, Université Laval, 2004. http://www.theses.ulaval.ca/2004/22301/22301.pdf.
Książki na temat "Pomme de terre – Variabilité":
Boyer, Elisabeth. Spe cial pomme de terre. Paris: Marabout, 2003.
Fletcher, James. Maladies de la pomme de terre. Ottawa: Imprimerie de l'État, 1992.
Allegri, Cécile. La pomme de terre, saveurs méditerranéennes. Paris: Éditions du Bottin gourmand, 2003.
Sy, M. O. Micropropagation de la pomme de terre. Wyd. 2. [Dakar]: Centre de recherches économiques appliquées/FASEG/UCAD, 1997.
Bryner, Silvia. Maigrir avec la pomme de terre. Delémont: Editions Viridis, 2001.
Colloque sur la pomme de terre "une pomme de terre au coeur sensible" 1993 Sainte-Foy, Québec). Colloque sur la pomme de terre "une pomme de terre au coeur sensible": 29 octobre 1993. [Québec]: Gouvernement du Québec, Ministère de l'agriculture, des pêcheries et de l'alimentation, 1993.
Association canadienne pour les Nations Unies. 2008, Année internationale de la pomme de terre. [Ottawa]: Agriculture et agroalimentaire Canada, 2008.
Canada, Canada Agriculture. Benton Ridge pomme de terre station satellite d'amélioration. Ottawa: Agriculture Canada, Direction générale des communications, 1988.
Lafont, Olivier. Parmentier: Au-delà de la pomme de terre. Paris, France: Pharmathèmes, édition-communication santé, 2012.
Rioux, Romain. La conduite de la plantation des pommes de terres [sic] en saison courte. [Ottawa]: Direction générale de la recherche, Agriculture Canada, 1986.
Części książek na temat "Pomme de terre – Variabilité":
"5 La variabilité du relief dans le temps". W Le relief de la Terre, 80–87. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-2171-6-007.
"5 La variabilité du relief dans le temps". W Le relief de la Terre, 80–87. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-2171-6.c007.
"3 Diversité des climats et variabilité à grande échelle". W Le climat : la Terre et les Hommes, 65–76. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1759-7-006.
"3 Diversité des climats et variabilité à grande échelle". W Le climat : la Terre et les Hommes, 65–76. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1759-7.c006.
Vandenbroeke, Christian. "La culture de la pomme de terre en Belgique (xviie-xixe siècles)". W Plantes et cultures nouvelles, 115–29. Presses universitaires du Midi, 1992. http://dx.doi.org/10.4000/books.pumi.23047.
Haynes, C. Vance. "Mastodon-Bearing Springs and Late Quaternary Geochronology of the Lower Pomme de Terre Valley, Missouri". W Geological Society of America Special Papers, 1–38. Geological Society of America, 1985. http://dx.doi.org/10.1130/spe204-p1.
Streszczenia konferencji na temat "Pomme de terre – Variabilité":
Blakemore, Frank, i Bakul Desai. "Fast-Track Bridge Redecking: Route 64 over Pomme de Terre Lake". W Structures Congress 2006. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40889(201)133.
MANCIOPPI, Lionel, Anne BENARD, Pierre HENNEBERT i Benoit HAZEBROUCK. "Sédiments de dragage : variabilité des sédiments, retour d’expérience sur les pratiques de dragage et sur la valorisation à terre en France". W Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2009. http://dx.doi.org/10.5150/cmcm.2009.033-6.
Raporty organizacyjne na temat "Pomme de terre – Variabilité":
Propst, Dennis B., Benoni L. Amsden, Wen-Huei Chang, Richard Kasul, LiChu Lee i Kathleen Peraies. Economic Impacts from Spending by Community Dock Owners at Pomme de Terre Lake. Fort Belvoir, VA: Defense Technical Information Center, styczeń 2008. http://dx.doi.org/10.21236/ada475717.
Fields, Ross C., Jeffrey S. Girard i Martha D. Freeman. Archeological Survey and Testing at Pomme de Terre and Stockton Lakes, Cedar, Dade, Hickory, and Polk Counties, Missouri. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1992. http://dx.doi.org/10.21236/ada265994.
McNerney, Michael J. An Archaeological Survey of the Shoreline at Public Use Areas Pomme de Terre Lake, Hickory and Polk Counties, Missouri. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1988. http://dx.doi.org/10.21236/ada202592.
Mercado-Allinger, Patricia A., Margaret A. Howard, Ross C. Fields, Jack M. Jackson i Daniel J. Prikryl. Archeological Survey of Selected Fish and Wildlife Management Areas at Pomme de Terre and Stockton Lakes, Dade, Hickory, and Polk Counties, Missouri. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1989. http://dx.doi.org/10.21236/ada216583.
Hydrogeology of confined-drift aquifers near the Pomme de Terre and Chippewa rivers, western Minnesota. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri864098.
Evaluation of availability of water from drift aquifers near the Pomme de Terre and Chippewa rivers, western Minnesota. US Geological Survey, 1987. http://dx.doi.org/10.3133/wri864321.