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 22 for “"Necator"”.
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Improved Polyhydroxyalkanoate Production from Selected Volatile Fatty Acids using Cupriavidus necator
… culture bacterial fermentation using Cupriavidus necator. Optimisation strategies involved the following investigations using shake flasks and 5 litre based batch fermentations:<br/><br/>Shake flask investigations determined that the temperature of 30oC and a nutrient medium, resulted in the …
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Fungicide Sensitivity of Erysiphe necator and Plasmopara viticola from Virginia and nearby states
… viticola) and powdery mildew (PM, Erysiphe necator) to commonly used single-site fungicides in Virginia and nearby states. DM and PM isolates were collected from 2005 to 2007. In grape leaf disc bioassays, 92% of the DM isolates were QoI (azoxystrobin)-resistant, but none were resistant to …
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Characterizing resistance of Erysiphe necator to fungicides belonging to the quinone outside inhibitors and demethylation inhibitors
Practical resistance of Erysiphe necator to quinone outside inhibitors (QoIs) is now widespread, and resistance to demethylation inhibitors (DMIs) has also developed. The goal of this research was to characterize fungicide resistance by elucidating resistance mechanisms and determining its …
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Ontogenic Resistance To Uncinula Necator In Developing Berries Of Grapevine (Vitis Spp.): Using Germplasm Diversity To Study The Mechanism
… resistance to the powdery mildew fungus Uncinula necator, as they age, becoming resistant within approximately two weeks after bloom (ontogenic resistance). Ontogenic resistance is of interest to uncover new avenues of disease management and to expand our knowledge of fruit development. Several …
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EPIDEMIOLOGY AND POPULATION GENETICS OF THE GRAPE POWDERY MILDEW CAUSAL FUNGUS, ERYSIPHE NECATOR, AND ITS RELATION TO COMMERCIAL DISEASE MANAGEMENT
Erysiphe necator is the causal fungus of grapevine powdery mildew disease and is one of the most widespread and consistently problematic pathogens of grapevine worldwide. Imported Vitis vinifera are among the most commonly grown grape species worldwide and are highly susceptible to powdery mildew …
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The function of IL-4Rα expression on key immune cells during experimental Nippostrongylus brasiliensis infections
… resembles that of the human hookworms Necator americanus and Ancylostoma duodenale and as such is a useful murine model for studying hookworm disease.
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Investigating Microbial Quorum Sensing Potential for Enhanced Production of Biodegradable Polymers
… two Gram-negative bacterial species (Cupriavidus necator H16 and Pseudomonas putida KT2440) were grown in specific production media and supplemented with three different exogenous quorum molecules sensing (C4-HSL, C6-HSL and 3-oxo-C12-HSL), to study if there was a change in the amount of PHA …
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The assessment of the contamination of soil-transmitted helminth life stages in the environment and under fingernails
… Trichuris trichiura and the hookworms (Necator americanus and Ancylostoma duodenale). STHs pose an important threat to global public health, affecting the poorest and most deprived communities where sanitation is inadequate, and water supplies are unsafe. Large-scale deworming programs …
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Biohydrogen as a Fuel: Understanding and Engineering Hydrogenase Enzymes for Biotechnological Applications
… [NiFe]-hydrogenase, native to Cupriavidus necator. It was shown that this hydrogenase was assembled in E. coli and it exhibited activity both in vitro and in vivo. Serendipitously, it was found that the native E. coli maturase system, critical for biosynthesis of the [NiFe] cofactor, could …
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Characterization of fungicide resistance in grape powdery and downy mildew using field trials, bioassays, genomic, and transcriptomic approaches: quinoxyfen, phosphite, and mandipropamid
… used against grape powdery mildew (Erysiphe necator). In 2013, E. necator isolates with reduced quinoxyfen sensitivity (designated as quinoxyfen lab resistance or QLR) were detected in Virginia. Field trials were conducted in 2014, 2015, and 2016 at the affected vineyard to determine to what …
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Vibrational spectroscopic studies on [NiFe] hydrogenases: insights into structure and function
… [NiFe]-hydrogenase from Cupriavidus necator, lacking the [Fe-S] cluster-containing small subunit HoxK, has been subjected to detailed spectroscopic investigations. This project revealed so far unknown maturation intermediates of the stepwise assembled [NiFe] cofactor. Among them, the …
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Biosynthesis and characterisation of polyhydroxyalkanoate biopolymers and their oligomers for circular economy
… wastes were supplied directly to Cupriavidus necator for use as potential carbon sources for PHA accumulation in a 48-hour shake flask cultivation study, in either tryptone soy broth or basal salt medium. LDPE and PE-T produced the most PHA yield with high purity (29% CDW and 40% CDW …
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The bacterial synthesis and characterisation of polyhydroxyalkanoates using waste plastics as carbon sources for novel applications
… carbon sources. The bacterial strain Cupriavidus necator H16 was used to generate polyhydroxybutyrate (PHB) and other PHAs with differing polyester compositions, depending on the type of waste carbon source used in 48 hour fermentations in nutrient rich media. These products were then chemically …
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Epidemiology and molecular characterization of human and canine hookworm
… to determine the species of hookworm present. Necator americanus was confirmed by PCR as the predominant hookworm species. A single case of Ancylostoma ceylanicum was identified. A study on the prevalence of hookworms and other gastrointestinal parasites in shelter dogs in south Louisiana and …
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Producción de precursores de bioplásticos a partir de la coseta de remolacha agotada
… mediante fermentación con Cupriavidus necator se evaluó en el hidrolizado de la ESBP, rico en azúcares, y en el medio obtenido después de la fermentación láctica, rico en ácidos orgánicos. Estos experimentos se llevaron a cabo como estudios preliminares, para ver la capacidad de C. …
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Using epidemiological principles and mathematical models to understand fungicide resistance evolution
… wheat and powdery mildew on grapevine (Erysiphe necator) to investigate the relative performance of these two strategies. We show that depending on the exact way in which the strategies are compared and the exact case, either strategy can be the more effective. However, when aiming to optimise …
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Production of bioplastic precursors (polyhydroxyalkanoates) from macroalgae
… fermentation with a pure culture of Cupriavidus necator, using as substrate sugar hydrolysates obtained from the alga without pretreatment, and previously pretreated with acid dilutions and heat input. Firstly (article 1), the dietary fibre content of the biomass without pretreatment was analysed …
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Functional Study of Lipoxygenase-mediated Resistance to Fungal Pathogens in Maize for Milk-chain Safety and in Grapevine for Sustainable Viticulture
… disease caused by an obligate biotroph, Erysiphe necator (En) is the most important fungal disease affecting grapevines, whereas. mycotoxin contamination of maize by Aspergillus flavus (Af) and Fusarium verticillioides (Fv) is a chronic global challenge impacting food security, health and trade. …
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The feeding apparattus [sic] of the nematode parasite Globodera pallida
… The parasitic nematodes such as hookworms (Necator americanus), whipworms (Trichuris trichess) and roundworm (Ascaris lumbricoides) are all highly prevalent within the global population with approximately 4.5 billion helminth infections estimated in a world population of some 6 billion …
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