Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Plant-Pathogen Interactions"”.
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The role of citrate in plant-pathogen interactions
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 …
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The Role of Mitochondrial Alternative Oxidase in Plant-pathogen Interactions
… (ROS) and reactive nitrogen species (RNS) in plant mitochondria. The aim of the research presented herein is to provide direct evidence in support of this hypothesis and to explore the implications of this during plant-pathogen interactions in Nicotiana tabacum. We observed leaf levels of ROS …
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Plant-Pathogen Interactions Associated with Wasting Disease in the Tropical Seagrass Thalassia testudinum.
… with the defense response systems of terrestrial plants. It is undetermined whether or not the increased ROS associated with the oxidative burst is simply an antimicrobial agent or a signaling molecule that will initiate programmed cell death (PCD) and lead to the hypersensitive response (HR), a …
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The effects of endophytic Fusarium verticillioides on the interactions of maize and its fungal pathogen Ustilago maydis.
… including mycorrhizal fungi, endophytes and pathogens inhabit plants, interact with each other, and affect their fitness. Although theoretical studies suggest that the outcomes of multispecies interactions are often different from those of pairwise interactions, most empirical studies have …
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Genomic characterizations of Xanthomonas cucurbitae and using comparative genomics to predict novel microbe-associated molecular patterns in Xanthomonas
Bacterial spot is a major plant disease caused by many plant-pathogenic members of the genus Xanthomonas. While each species is narrow in host range, bacterial spot Xanthomonads infect a large variety of plant hosts, leading to large economic losses for farmers around the world. Although …
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Effects of Increased Atmospheric Carbon Dioxide Levels on Tobacco Mosaic Virus and Root-Knot Nematodes in Genetically Resistant and Susceptible Tomato Plants
… carbon dioxide (CO<sub>2</sub>) may affect plant/pathogen interactions. This study focused on the effects of elevated CO<sub>2</sub> on Root-Knot Nematode (<em>Meloidogyne arenaria</em>) and Tobacco Mosaic Virus (TMV) infection in genetically resistant versus susceptible tomatoes …
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Characterization of the Ubiquitin N-end Rule Pathway in Arabidopsis
… homeostasis is essential for the ability of plants to grow under different physiological conditions, as well as respond to various biotic or abiotic stresses. One of the ways that cells achieve this equilibrium is through the targeted proteolysis of proteins by the ubiquitin-proteasome …
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The dynamics of molecular components that regulate aphid-plant interactions
… losses of crop yield, through draining plant resources and vectoring over 275 plant viruses. In plant-pathogen interactions, basal plant defense involving pathogen associated molecular pattern (PAMP) triggered immunity (PTI) and effector triggered immunity (ETI) effectively fends off the …
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Diverse functions of the two segmentally duplicated 9-lipoxygenases ZmLOX4 and ZmLOX5 of maize
Plant lipoxygenases (LOX) are non-heme iron containing dioxygenases that catalyze the hydroperoxidation of polyunsaturated fatty acids resulting in the synthesis of a large number of functionally diverse oxylipins. Although the physiological functions of jasmonate-producing 13-LOXs in dicots have …
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Investigating the effect of mutations in lipopolysaccharides (LPS) (O-antigen and Core region) of Salmonella Typhimurium on the colonisation of “microgreens”
… Salmonella Typhimurium, a common foodborne pathogen, has been implicated in several outbreaks, underscoring the importance of understanding its interactions with fresh produce. This study aimed to investigate the effect of mutations in lipopolysaccharides (LPS) of S. Typhimurium on the …
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Identification of <i>Phytophthora capsici</i> nuclear effector targets to bolster host immune signalling and resistance pathways
Phytophthora capsici is a plant pathogenic oomycete that causes huge damage to agriculture worldwide. Its virulence is driven by effectors, which target various host cell components in order to suppress plant immune responses. To enhance plant immunity and to generate new resistances in crops, it …
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Characterization of two genes, trehalose-6-phosphate synthase/phosphatase and nucleotide binding protein, shown to be differentially regulated in roots of Cypripedium parviflorum var. pubescens grown with a mycorrhizal fungus Thanatephorus pennatus
… and fungi could have broad implications for plant pathogen interactions. Fungi associated with North American terrestrial orchids were once included in the pathogenic genus Rhizoctonia. This suggests that orchids are able to overcome or utilize normally pathogenic pathways to establish …
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Secretion and delivery of virulence proteins from <i>Phytophthora infestans</i> to its host
… effector) or outside (apoplastic effector) plant cells to neutralise host immunity. One of the most well characterised classes of cytoplasmic effectors are the RXLR (Arg-any amino acid-Leu-Arg) class. RXLR is a highly conserved motif in genes encoding secreted proteins across many oomycete …
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The role of autophagy in arabidopsis thaliana during biotrophic and hemibiotrophic fungal infections
A plant's response to pathogen infection is tailored dependent on infection strategy. Successful plant pathogens employ various infection strategies to avoid or reduce plant defense responses for the establishment of host compatibility. Autophagy is a non-selective degradation pathway conserved in …
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Gene regulation in a pathogen-plant interaction: soft rot erwinias versus potato tubers
… disease destructive to numerous important crop plants. Damage to plants is primarily due to celldegrading enzymes (CDEs) secreted by the bacteria. I am interested in potato (Solanum tuberosum) soft rot because it is of agricultural importance and it represents an ideal model system for …
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Persistent viruses in Capsicum annuum plants: Understanding the mystery guests
Most work on plant viruses focuses on their pathogenicity, but recent studies suggest viruses may benefit their hosts, at least under some conditions. Plant-infecting viruses of the Partitiviridae and Endornaviridae are transmitted only vertically, via pollen and seed, generally cause no disease …
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New Tools to Understand Mechanisms of Nutrient Transfer from Plants to Biotrophic Pathogens
… 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 …
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Análise proteômica de raízes de soja em resposta à inoculação com nematoides de galha
… visando o entendimento da resposta da interação planta x nematoide têm sido realizados, porém, ainda há poucas informações a esse respeito. A análise de proteínas por eletroforese bidimensional associada à espectrometria de massa é uma técnica que tem sido bastante aprimorada e pode ajudar a …
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