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 101 for “"Plant Pathogen"”.
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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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Bacterial Plant Pathogen Identification using Genomics and Metagenomics
The timely identification of pathogens responsible for disease outbreaks is crucial for implementing effective control measures and minimizing the spread of infectious diseases. Conventional methods of identification are limited to specific pathogen species because they require prior knowledge and …
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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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CHARACTERIZATION OF CA²⁺-MEDIATED VIRULENCE AND MICROBIAL COMPETITION IN THE PLANT PATHOGEN PSEUDOMONAS SYRINGAE
… critical roles across all domains of life. In plants, Ca²⁺ acts as a central second messenger that transduces a wide array of biotic and abiotic signals, including those triggered during interactions with microbial pathogens. Upon pathogen recognition, plants often exhibit rapid and localized …
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Cornichon Proteins: Unexpected Roles in Plant Pathogen Infection, ER Morphology Maintenance and Pollen Development
… to CNI homologs (CNIHs) in mammals and plants. Erv14 functions as a cargo receptor of coat protein complex II (COPII) for protein trafficking from the endoplasmic reticulum (ER) to the Golgi apparatus, en route to their final destinations. By interacting with specific cargo proteins, CNI …
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Structure/Function Analysis of the Quorum-sensing Regulator EsaR from the Plant Pathogen Pantoea stewartii
… the bacteria grow to high cell densities in the plant xylem and secrete an abundance of exopolysaccharide (EPS). EPS production is regulated by quorum sensing. Two regulatory proteins are key to the process of quorum sensing, the LuxI and LuxR homologues EsaI and EsaR. Most LuxR homologues …
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Systems View Of The Soybean Genetic Mechanisms Involved In The Response To Plant Pathogen Infection
This thesis involves the important crop plant soybean (Glycine max), and provides a rich information resource for breeders and geneticists working towards improving traits for pathogen resistance.Results reported here provide a systemic view at both the genetic and biochemical level, and were …
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A Genomic and Proteomic Investigation of the Plant Pathogen Armillaria mellea: Buried Treasure or Hidden Threat?
Armillaria mellea is a major plant pathogen of timber and agronomic crops. Yet, no large-scale “-omics” data are available to enable new studies, and limited experimental models are available to investigate basidiomycete pathogenicity. Herein it is revealed that the A. mellea genome comprises 58.35 …
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Keeping time on the plant-pathogen arms race : a role for the plant circadian clock in immune response
… time-of-day variation in susceptibility to the plant-pathogen Pseudomonas syringae DC3000 pathovar tomato (P. syringae DC3000) when infected under constant light and temperature conditions. Wild type plants showed least susceptibility at circadian time (CT) 26 and 50, which correspond to …
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Analysis of symptom expressions and transmission rates caused by the plant pathogen Phytophthora ramorum on native chaparral plants from the genus Arctostaphylos
… forest environments and nurseries. This oomycete pathogen has had a huge economic impact on the nursery and lumber industry. Forests in California have experienced substantial mortality of oaks affecting the forest dynamics and diversity. Our research investigates four native species and two …
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Using the Bacterial Plant Pathogen Pseudomonas syringae pv. tomato as a Model to Study the Evolution and Mechanisms of Host Range and Virulence
Most plant pathogens are specialists where only few plant species are susceptible, while all other plants are resistant. Unraveling the mechanisms behind this can thus provide valuable information for breeding or engineering crops with durable disease resistance. A group of Pseudomonas syringae …
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Biological control of a plant pathogen and pest by expression of a cloned Serratia marcescens chiA gene and Bacillus thuringiensis cryIA(c) gene in endophytic bacteria
Protection of plants from pathogens and pests by introduced microorganisms provides an alternative to environmentally hazardous chemical pesticides and fungicides. Plant associated, free living, non-pathogenic bacteria found in the rhizosphere and phyllo plane have been the emphasis of research on …
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Callus Culture as a Prospective Biosensor: Examining Fusarium graminearum Infection and Exploring the Use of RUBY as a Pathogen-Inducible Reporter
… and globalization contributing to the spread of plant diseases and a reliance on visual symptoms for detection, agriculturalists face continual challenges in identifying the presence of pathogens with enough lead time for effective mitigation, highlighting a need for novel early plant pathogen …
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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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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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Functional Analysis of Plant Glutamate Receptors
The plant glutamate receptors (GLRs) are homologs of mammalian ionotropic glutamate receptors (iGluRs) and are hypothesized to be potential amino acid sensors in plants. Since their first discovery in 1998, the members of plant GLRs have been implicated in diverse processes such as C/N ratio …
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