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Dissertations / Theses on the topic 'Plant-Pathogen Interactions'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Kathiria, Palak, and University of Lethbridge Faculty of Arts and Science. "Incompatible and compatible plant pathogen interactions." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2006, 2006. http://hdl.handle.net/10133/351.

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Pathogens are one of the prevalent stresses to plants. Resistance mediated by the resistance genes is efficient mechanism for evading the pathogens. To understand the influence of various biotic and abiotic factors on resistance gene promoters, plants having N gene promoter fused with reporter genes were developed. Experiments with tobacco plants revealed that on tobacco mosaic virus infection, the N protein may increase in the cells. Also, extreme temperature may result in decrease in the N protein. The salicylic acid produced during the development of systemic acquired resistance does not hi

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2

Hann, Dagmar R. "Early events in plant-pathogen interactions." Thesis, University of East Anglia, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502371.

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Plants are in constant contact with a wide range of microbes. Although many of them are potential pathogens, disease is the exception. This is partly due to a very effective immune response mounted by the plant. This immune response consists of two layers, both of which are innate. The first layer perceives the microbe directly after invasion, through recognition of pathogenassociated molecular patterns (PAMPs) by membrane localized pattern recognition receptors (PRRs). Microbes have developed specialized secretion systems for the delivery of effector proteins into the host cytoplasm, some of

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3

Mastorakis, Emmanouil. "Chromatin remodelling during plant-pathogen interactions." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/101423/.

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Plants - including commercially important crops - are exposed to numerous pathogens often resulting in significant loss of yield. Understanding the underlying mechanisms of pathogen recognition and defence strategies is key in successfully ensuring food security. Research on plant-pathogen interactions has mainly focused on the gene networks after pathogen perception as well the identification of resistance genes. Latest research suggests that chromatin remodelling, including nucleosome displacement and DNA or histone-modifying enzymes are important in plant immunity. This thesis focuses on ch

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4

Cano, Mogrovejo Liliana. "Genome analyses of filamentous pathogen-plant interactions." Thesis, University of East Anglia, 2011. https://ueaeprints.uea.ac.uk/38811/.

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5

Vélez, Heriberto. "Alternaria alternata mannitol metabolism in plant-pathogen interactions." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-12282005-171313/.

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Mannitol is purported to have role in fungi as a storage carbohydrate and has been shown to quench reactive oxygen species (ROS) both in vitro and in vivo. Mannitol metabolism in fungi is thought to occur through the mannitol cycle, which was proposed in the late 1970?s from studies of cell free extracts of the fungus Alternaria alternata. In this cycle, mannitol 1-phosphate 5-dehydrogenase (MPDH; EC 1.1.1.17) reduces fructose 6-phosphate into mannitol 1-phosphate, which is dephosphorylated by a mannitol 1-phosphatase (EC 3.1.3.22) resulting in mannitol and inorganic phosphate. Mannitol also c

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Jambagi, Shridhar. "Molecular studies of plant-pathogen interactions in strawberry." Thesis, University of Reading, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602468.

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Powdery mildew is an important disease of crop plants. In strawberry, the disease is caused by the obligate biotrophic fungus Podosphoera ophonis (syn: Sphoeratheco mocu/oris f. sp. Fragorioe) and causes significant economic loss in the cultivated strawberry. This study used the diploid species Fragorio vesco as a model to study plant pathogen interactions. Initial studies involved in the identification of mildew resistance locus 0 (MLO) genes in the diploid species, F. vesco f. vesco and identified 17 FvMLO genes. Real-time quantitative PCR (qRT-PCR) results showed differential expression of

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7

Hendry, Tia Lynne. "The role of citrate in plant-pathogen interactions." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20529.

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Bacterial plant pathogens have evolved a wide range of mechanisms to suppress the immune response that they trigger in their hosts, including the production of effectors and phytotoxins. The tri-carboxylic acid citrate, which is secreted into the apoplast by both bacterial pathogens and plant hosts has previously been shown to increase the virulence of the gram negative pathogen Pseudomonas syringae DC3000 (Pst DC3000), by acting both as a chemoattractant and as an inducer of genes associated with the type III secretion system (T3SS) and phytotoxin production. The effect of citrate on the host

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8

Tinney, Glenda Wyn. "Tripartite interactions of host plant, herbivore, and rust pathogen." Thesis, Lancaster University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364320.

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9

Hennecke, Berthold Rembertus. "Host-pathogen interactions between the fungal pathogen Phloeospora mimosae-pigrae and Mimosa pigra, giant sensitive plant /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17081.pdf.

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10

Jennings, Dianne Brooks. "The Role of Mannitol and Mannitol Dehydrogenase in Plant-Pathogen Interactions." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20001102-175638.

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<p>Reactive oxygen species (ROS) are known to act as both signaling molecules and direct antimicrobial agents in plant defense against pathogens. Many plant pathogens have the ability to synthesize mannitol, a potent ROS quencher, and there is growing evidence that at least some phytopathogenic fungi use mannitol to suppress ROS mediated defenses. Here we show that mannitol production and secretion in the phytopathogenic fungus, Alternaria alternata is induced in the presence of host plant extracts. Additionally we demonstrate that the catabolic enzyme mannitol dehydrogenase (MTD) is induced i

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11

Sastry, J. S. S. G. M. "Molecular studies on genetic variability and plant pathogen interactions in pearl millet downy mildew(sclerospora graminicola) pathogen." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1998. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3384.

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12

Voisey, Christine Rosalie. "Chitinase induction in Phaseolus vulgaris during race-specific interactions with Pseudomonas syringae pv. phaseolicola." Thesis, University of Hull, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304537.

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13

Granberg, Åsa. "Microbotryum violaceum on Silene dioica : understanding traits that influence plant-pathogen interactions." Doctoral thesis, Umeå universitet, Ekologi, miljö och geovetenskap, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1387.

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The dynamics of a plant-pathogen interaction vary both within and among species. Both spatial structuring and specific genetic and life-history characteristics will affect the interaction and the outcome of a potential co-evolution between the two organisms. In this thesis I have studied the interaction between the wild perennial herb Silene dioica and its automictic, obligate anther smut Microbotryum violaceum MvSd. From the plant perspective, I have examined different aspects of biochemical resistance in S. dioica to M. violaceum MvSd. From the pathogen perspective, I have focused on the bre

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Granberg, Åsa. "Microbotryum violaceum on Silene dioica : understanding traits that influence plant-pathogen interactions /." Umeå : Department of Ecology and Environmental Science, Umeå University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1387.

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15

Adams, Nicolette. "Investigating the Role of Cyclic Nucleotide gated channels in Plant- Pathogen Interactions." Doctoral thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/4236.

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16

Wang, Erpei. "Pigments in Rust Fungi: Biosynthesis, Role in Plant-Pathogen Interactions, and Evolution." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18434.

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Diseases caused by rust fungi represent critical constraints to global plant production. A characteristic feature of these pathogens is the striking pigments they produce in one or more spore forms, which give them a rusty appearance. These pigments are thought to protect rust fungi against UV radiation and oxidative stress, and possibly act as virulence factors. The cytoplasmic carotenoid pigment composition and relative abundance of 14 rust species were studied, including Puccinia graminis f. sp. tritici (Pgt), P. striiformis f. sp. tritici, P. triticina, P. hordei, P. psidii, P. thaliae, P

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17

Girard, Ian. "Global RNA profiling of susceptible and tolerant genotypes of Brassica napus infected with Sclerotinia sclerotiorum and prediction and functional characterization of novel regulators of plant defense." Frontiers, 2016. http://hdl.handle.net/1993/31862.

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Brassica napus (L.) contributes over $19 billion dollars each year to the Canadian economy. However, yields are constantly threatened by Sclerotinia sclerotiorum (Lib) de Bary, the fungus responsible for Sclerotinia stem rot. To date, there are no global RNA profiling data or gene regulatory analyses of plant tissues directly at the main site of foliar infection in the B. napus-S. sclerotiorum pathosystem. Using RNA sequencing and a gene regulatory analysis, I discovered putative transcriptional regulators of biological processes associated with the tolerant phenotype of B. napus cv. Zhougyou8

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18

Seneviratne, WSJM Sudeshi Lakmali. "Genomic Analysis of Septoria nodorum Blotch Susceptibility Genes Snn1 and Snn2 in Wheat." Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/31700.

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Septoria nodorum blotch is a disease of wheat caused by the necrotrophic fungus Parastagonospora nodorum. In the wheat-P. nodorum pathosystem, recognition of pathogen-produced necrotrophic effectors (NEs) by dominant host genes leads to host cell death, which allows the pathogen to gain nutrients and proliferate. To date, nine host gene-NE interactions have been reported in this pathosystem. Among them, the Snn2-SnTox2 interaction has shown to be important in both seedling and adult plant susceptibility. A saturated genetic linkage map was developed using a segregating population of recombinan

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19

Vogler, Ute Katharina. "Transgenic and classically bred apple genotypes : multitrophic investigation of plant-insect-pathogen interactions /." [S.l.] : [s.n.], 2009. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18386.

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20

Loucks, Kyle. "Plant-Pathogen Interactions Associated with Wasting Disease in the Tropical Seagrass Thalassia testudinum." UNF Digital Commons, 2013. http://digitalcommons.unf.edu/etd/427.

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Lipopolysaccharide (LPS) was shown to serve as a strong elicitor of the early defense response in the subtropical seagrass Thalassia testudinum Banks ex König and was capable of inducing an oxidative burst identified at the single cell level. The formation of reactive oxygen species (ROS) included a diphenylene iodonium sensitive response, suggesting the involvement of an NADPH oxidase. A 900 bp fragment of this enzyme was sequenced and found to encode a NAD binding pocket domain with extensive homology to the Arabidopsis thaliana rbohF (respiratory burst oxidase homolog) gene. Pharmacological

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21

Clarke, Andrew. "Nitric oxide and hydrogen peroxide mediated defence responses in Arabidopsis thaliana." Thesis, University of the West of England, Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365145.

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Incompatible plant/pathogen interactions are often manifested as the hypersensitive response (HR), characterised by host cell death and rapid tissue collapse at the site of attempted infection. A key early response during the HR is the generation of reactive oxygen species (ROS), such as the superoxide anion ( 0; -) and hydrogen peroxide (H20 2), in an oxidative burst. The ROS produced during the oxidative burst have been implicated as cellular signalling molecules for the induction of defences responses including hypersensitive cell death. Increasing evidence exist that the free radical, nitr

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22

Cunha, Felisberta Maria Jesus. "The influence of extracts of Ascophvllum nodosum on plant and soil-borne pathogen interactions." Thesis, University of Plymouth, 2002. http://hdl.handle.net/10026.1/2348.

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This thesis presents an investigation into the responses to extracts of Ascophyllum nodosum (Maxicrop seaweed extracts - MSE) of two different plants species - wheat and strawberry, and their interactions with two soil-borne pathogens, Gaeumannomyces graminis and Phytophthora fragariae respectively, under various environmental conditions. The responses to MSE using hydroponic, glasshouse and field experiments showed that levels of Take-all infection in wheat were reduced by some of the treatments applied. Repeat experiments showed that consistency of results was poor but a positive trend for d

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23

Christopher, Stephen James. "Plant-pathogen interactions: turnip crinkle virus suppression of the hypersensitive response in arabidopsis thaliana." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0429103-084755.

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Thesis (M.S.)--Worcester Polytechnic Institute.<br>Keywords: Turnip crinkle virus; arabidopsis; thaliana; TCV; avrRpt2; avrRpm1; avrRps4; systemic acquired resistance; virulence; Avr gene; R gene; pseudomonas syringae. Includes bibliographical references (p. 60-66).

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24

Dimkpa, Stanley Obumneke Nyebuhi. "Genome wide association mapping and assessment of allelic variation in strigolactone synthesis genes involved in rice plant parasite interactions." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=220456.

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25

Trethowan, Jonathan Brian. "Characterisation and expression of a novel chitin-binding protein involved in plant defence." Thesis, Royal Holloway, University of London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267687.

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26

Babíková, Zděnka. "How do interactions between herbivores and mycorrhizal fungi regulate production of plant signalling compounds and parasitoid behaviour?" Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=203957.

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The aim of this PhD was to investigate major gaps in our understanding of how mycorrhizal fungi and aphids interact via their effects on plants, and how these interactions regulate emission of plant volatiles and consequently aphid and parasitoid host location. A series of experiments was designed using broad bean (Vicia faba L.), pea aphids (Acyrthosiphon pisum) and their parasitoid wasp, Aphidius ervi and mixed or single spore cultures of AM fungi as a model system. This PhD has determined that arbuscular mycorrhizal fungi are more important drivers of above-ground ecological interactions th

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27

Astua-Monge, Gustavo. "Genetic characterization of plant-pathogen interactions between Xanthomonas campestris pv. vesicatoria and tomato (Lycopersicon esculentum L.)." [Florida] : State University System of Florida, 1999. http://etd.fcla.edu/etd/uf/1999/amg2172/astua-monge%5Fg.pdf.

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Thesis (Ph. D.)--University of Florida, 1999.<br>Title from first page of PDF file. Document formatted into pages; contains vii, 86 p.; also includes graphics. Vita. Includes bibliographical references (p. 74-85).

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28

Chege, Peter Gacii. "Impact of alternate host phenology amd alternate hose-transgenic corn interactions on the Western corn rootworm (Coleoptera: Chrysomelidae)." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4389.

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Thesis (Ph.D.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on May 1, 2009) Vita. Includes bibliographical references.

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Dinkeloo, Kasia. "New Tools to Understand Mechanisms of Nutrient Transfer from Plants to Biotrophic Pathogens." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/97521.

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The interaction between Arabidopsis and its natural downy mildew pathogen, Hyaloperonospora arabidopsidis (Hpa), provides a model for understanding how oomycetes colonize plants. Hpa is a model organism for many highly destructive oomycete pathogens and transcriptomics of this interaction have been well-documented. However, the material in these studies has been derived from infected leaves that contain a mix of pathogen-proximal and pathogen-distal plant cells. The most direct interactions between Arabidopsis and Hyaloperonospora arabidopsidis occur in haustoriated cells- where the pathogen c

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30

Mamode, Cassim Adiilah. "Role of the most abundant plant sphingolipids, Glycosyl Inositol Phosphoryl Ceramides GIPCs, in membrane structure and host/pathogen interactions." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0413.

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Les Glycosyl-Inositol Phosphoryl Céramides (GIPCs) sont les sphingolipides majeurs de la biosphère. Ils représentent jusqu’à 40%mol des membranes plasmiques (MP) des plantes et des champignons. Les GIPCs sont cependant restés presque totalement ignorés depuis leur découverte il y a plus de 50 ans. Aucune donnée n’est disponible sur leurs rôles dans la structuration des membranes biologiques, leur organisation en nanodomaines membranaires et leurs interactions avec les autres lipides et les protéines. De nombreuses questions à propos des GIPCs de plantes restent encore sans réponse, telles que

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31

Ye, Fanghua Verfasser], Nicolaus von [Akademischer Betreuer] [Wirén, Holger B. [Akademischer Betreuer] Deising, and Ralph [Akademischer Betreuer] Hückelhoven. "The influence of iron (Fe) nutritional status on plant-pathogen interactions / Fanghua Ye. Betreuer: Nicolaus Wirén ; Holger B. Deising ; Ralph Hückelhoven." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2015. http://d-nb.info/1089085664/34.

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32

Bockino, Nancy Karin. "Interactions of white pine blister rust, host species, and mountain pine beetle in whitebark pine ecosystems in the Greater Yellowstone." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594498141&sid=3&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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33

Pettersson, Viktoria. "Interactions between natural enemies and the dioecious herb Silene dioica." Doctoral thesis, Umeå : Department of Ecology and Environmental Science, Umeå University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-20989.

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34

Koziol, Adam. "Application of Direct-sequencing Peptide Proteomics to the Characterization of Antagonistic (Endogenous and Exogenous) Proteins in Cereal Grains." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23853.

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The cereal seed plays a crucial role in society – both in the “food as medicine” paradigm, but also in food security. It is the starch and proteins present in the seed that lend it importance in these dissimilar anthropomorphic activities. This thesis investigation first characterized the post-translational processing of the potential diabetogen, wheat globulin-3. Globulin-3-like peptides were observed primarily in the embryo. These peptides varied significantly in their molecular masses and isoelectric points, as determined by two dimensional electrophoresis and immunoblotting. Five major po

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Gammelgård, Elin. "Interactions of potato virus A with host plants : recombination, gene silencing and non-hypersensitive resistance /." Uppsala : Dept. of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/2007111.pdf.

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36

Berenguer, Helder Duarte Paixão. "Eucalyptus predisposition to Neofusicoccum kwambonambiense under water stress." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/22330.

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Mestrado em Biologia Molecular e Celular<br>In Portugal, Eucalyptus, particularly Eucalyptus globulus, occupies more than 800 000 ha and, due to being a major source of biomass for fiberboard, industrial charcoal, fuel wood and paper pulp, has become a key genus, with a considerable economic importance. However, E. globulus productivity faces new pressures, with climate change-driven drought as one of the most hostile ones. Drought can lead to growth impairment and yield reduction: directly; or indirectly, through the increase of plant susceptibility to pathogens by a predisposition mechanism.

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Scherf, Andrea [Verfasser], Gerhard [Akademischer Betreuer] Thiel, and Cornelia [Akademischer Betreuer] Ullrich-Eberius. "Licorice, cucumber, downy mildew: tracing the secret Interactions between the plant extract, the host and the pathogen / Andrea Scherf. Betreuer: Gerhard Thiel ; Cornelia Ullrich-Eberius." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2012. http://d-nb.info/1106115716/34.

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Misas, Villamil Johana C. Verfasser], Paul [Akademischer Betreuer] Schulze-Lefert, Marcel [Akademischer Betreuer] [Bucher, and Hermen [Akademischer Betreuer] Overkleeft. "Activity-Profiling of Vacuolar Processing Enzymes and the Proteasome during Plant-Pathogen Interactions / Johana C. Misas Villamil. Gutachter: Paul Schulze-Lefert ; Marcel Bucher ; Hermen Overkleeft." Köln : Universitäts- und Stadtbibliothek Köln, 2010. http://d-nb.info/1038226112/34.

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Mahadevan, Geetha B. "Viral suppression of host defenses." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0507104-110551.

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Linders, Rico. "On interactions between a wild host plant, a fungal pathogen and an insect herbivore = Over interacties tussen een wilde waardplant, een pathogene schimmel en een herbivoor insekt : (met een samenvatting in het Nederlands) /." [S.l. : s.n.], 1994. http://www.gbv.de/dms/bs/toc/18973471X.pdf.

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Andrade, Linares Diana Rocío. "Characterization of tomato root-endophytic fungi and analysis of their effects on plant development, on fruit yield and quality and on interaction with the pathogen Verticillium dahliae." Phd thesis, Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5137/.

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Non-mycorrhizal fungal endophytes are able to colonize internally roots without causing visible disease symptoms establishing neutral or mutualistic associations with plants. These fungi known as non-clavicipitaceous endophytes have a broad host range of monocot and eudicot plants and are highly diverse. Some of them promote plant growth and confer increased abiotic-stress tolerance and disease resistance. According to such possible effects on host plants, it was aimed to isolate and to characterize native fungal root endophytes from tomato (Lycopersicon esculentum Mill.) and to analyze their

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Pétriacq, Pierre. "Etude de la biosynthese du nad chez les plantes : conséquences physiologiques de sa manipulation chez Arabidopsis thaliana." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112188/document.

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Porteur redox intervenant dans nombre de processus métaboliques, le NAD (nicotinamide adénine dinucléotide) est central pour les cellules vivantes. Outre son importance dans le métabolisme oxydoréductif, des données récentes suggèrent fortement d’autres rôles importants pour le NAD dans la signalisation cellulaire. Un système inductible d’enrichissement en NAD en surproduisant la quinolinate phosphoribosyltransférase (QPT) d’Escherichia coli chez Arabidopsis thaliana a permis de mettre en évidence l’implication du NAD dans les mécanismes spécifiques de défenses qui régissent les interactions p

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Pedro, Uribe Mejia. "Dissection of defense responses of skl, an ethylene insensitive mutant of Medicago truncatula." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1241.

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The interactions between Medicago truncatula and Phytophthora medicaginis were examined using skl, a mutant blocked in ethylene perception, and a range of wild accessions of this plant species. P. medicaginis infection of M. truncatula plants resulted in compatible responses, whereas the mutant genotype was found to be hyper-susceptible to the pathogen. Phytophthora reproduction and colonization rates of Medicago tissues supported this conclusion. Infection of skl with different pathogens reinforced this observation. Ethylene production in infected A17 and skl roots showed reduced ethylene e

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Ramasubramanian, Selva Kumari Verfasser], Paul [Akademischer Betreuer] Schulze-Lefert, Ulf-Ingo [Akademischer Betreuer] Fluegge, Marcel [Akademischer Betreuer] [Bucher, and Gunther [Akademischer Betreuer] Doehlemann. "Biochemical and Structural Characterization of RCR3-AVR2: A Model for Protease-Inhibitor Interactions at the Plant-Pathogen Interface. / Selva Kumari Ramasubramanian. Gutachter: Paul Schulze-Lefert ; Ulf-Ingo Fluegge ; Marcel Bucher ; Gunther Doehlemann." Köln : Universitäts- und Stadtbibliothek Köln, 2012. http://d-nb.info/1048676986/34.

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Clin, Pauline. "Modéliser les dynamiques épidémiques avec priming immunitaire au sein des mélanges variétaux." Electronic Thesis or Diss., Rennes, Agrocampus Ouest, 2022. http://www.theses.fr/2022NSARD100.

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Permettre aux agriculteurs de s’affranchir des pesticides et préserver les ressources génétiques cultivées en limitant l’émergence de nouvelles maladies est l’un des objectifs de la transition agro-écologique. Les mélanges variétaux sont une solution efficace et plus durable que les cultures pures de variétés résistantes pour la maîtrise des épidémies, mais leur fonctionnement est encore mal compris. L’immunité végétale et plus précisément le priming immunitaire est parfois évoqué pour expliquer l’efficacité observée des mélanges, mais son influence sur les épidémies reste peu étudiée. J’ai do

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Ferreira, Rafael Marini [UNESP]. "Secretoma da bactéria fitopatogênica Xanthomonas citri subsp. citri." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/92688.

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Made available in DSpace on 2014-06-11T19:26:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-11-05Bitstream added on 2014-06-13T20:33:53Z : No. of bitstreams: 1 ferreira_rm_me_jabo.pdf: 510263 bytes, checksum: 543073ee3d6f55d77bb1607889dc966f (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O cancro cítrico está entre as principais doenças que afetam a produção de laranjas no Brasil e é causado pela bactéria fitopatogênica gram-negativa Xanthomonas citri subsp. citri (Xac). O presente trabalho teve por objetivo analisar a expressão diferencial de prot

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Veillet, Florian. "Étude des mécanismes moléculaires et biochimiques du transport de sucres dans les relations source/puits et au cours de l'interaction entre Arabidopsis thaliana et le champignon nécrotrophe Botrytis cinerea." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2305/document.

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La distribution des sucres est un processus clé dans le développement de la plante et cours des interactions plantes/microorganismes.Une recherche des acteurs moléculaires impliqués dans la répartition des ressources carbonées au cours de l'interaction avec le champignon nécrotrophe B. cinerea a été réalisée. Plusieurs familles de transporteurs de sucres et d'invertases ont été ciblées, permettant d'établir une cartographie des gènes régulés transcriptionnellement lors de l'interaction. Le rôle de certains gènes candidats a été étudié par une approche de génomique fonctionnelle afin de mettre

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Ferreira, Rafael Marini. "Secretoma da bactéria fitopatogênica Xanthomonas citri subsp. citri /." Jaboticabal : [s.n.], 2009. http://hdl.handle.net/11449/92688.

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Resumo: O cancro cítrico está entre as principais doenças que afetam a produção de laranjas no Brasil e é causado pela bactéria fitopatogênica gram-negativa Xanthomonas citri subsp. citri (Xac). O presente trabalho teve por objetivo analisar a expressão diferencial de proteínas secretadas pela bactéria selvagem e por um mutante (02H02) assintomático, que teve a proteína HrpB4, que participa de seu sistema de secreção tipo III (SSTT) inativada, em condição de cultivo em meio rico CN e em meio XAM1 indutor de hipersensibilidade e patogenicidade (genes hrp). As proteínas secretadas em meio de cul

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Wingate, V. P. M. "An immunological approach to study the cell surface of Pseudomonas syringae pv. glycinea." Thesis, Open University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377943.

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Dauch, Amélie L. "Velvetleaf-Colletotrichum coccodes pathosystem : molecular monitoring of the pathogen and gene expression analysis during plant pathogen interaction." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102492.

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Colletotrichum coccodes strain DAOM 183088 is considered a potential bioherbicide for velvetleaf (Abutilon theophrasti), a devastating weed in North American corn and soybeans. Risk assessment studies have created a demand for an accurate and robust method to monitor this strain, and to distinguish it from indigenous background population of microorganisms present in the field. Safe biological control management of velvetleaf also requires comprehensive understanding of the pathogenicity determinants employed by this host-specific fungus to establish infection on velvetleaf, an aspect central

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