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 30 for “"Pseudomonas sp"”.
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Isolation and molecular characterisation of two Pseudomonas sp. ACC deaminase genes
… nitrogen source. Enzyme assays indicated that Pseudomonas had high ACC deaminase gene-specific primers and probes respectively revealed that only one bacterium, Pseudomonas fluerescens strain 17, had a gene with homology to previously sequenced ACC deaminase genes.
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Degradation of tertiary butyl alcohol by a Pseudomonas sp. isolated from groundwater
A <i>Pseudomonas</i> sp. capable of degrading tertiary butyl alcohol (TBA) as a sole carbon source, was isolated from a groundwater aquifer (50 ft. deep) at a petroleum refinery. The most probable number (MPN) of TBA degrading microorganisms was 4.9 x 10³ organisms/g (dry wt) of subsurface soil. …
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Biodegradation of tertiary butyl alcohol by an introduced Pseudomonas sp. in subsurface soil microcosms
… was stimulated by the addition of the Pseudomonas sp., VT100. The indigenous subsurface microflora of the Fredrick clay metabolized TBA in soil microcosms that contained 10 to 500 mg/liter TBA. The addition of Pseudomonas sp., VT100, to the Fredrick clay enhanced the rate of TBA …
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Exploring reactivity and component interactions in Toluene/o-Xylene Monooxygenase from pseudomonas sp. OX1
… protein. This diiron active site is responsible for activation of dioxygen and oxidation of hydrocarbons. Additional component proteins modify the structure of the hydroxylase regulating substrate access and pre-organizing the diiron site for reactivity. The relationships between …
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The 16S rRNA characterization of a novel "microaerophilic" Pseudomonas sp. from the oligotrophic deep subsurface environment
… negative microaerophilic bacterium, designated Pseudomonas sp. strain MR 100, was isolated from a depth of 463 meters at the Savannah River DOE site and identified using 16S rDNA sequencing and DNA-DNA reassociation. Micro aerophiles from the Middendorf formation were isolated by use of a …
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Characterization of the meta-cleavage pathway enzymes, 4-Hydroxy-2-ketovalerate aldolase and aldehyde dehydrogenase (acylating), from Pseudomonas sp. strain CF600
… work presented in this thesis focuses on three aspects of the aldolase-dehydrogenase. First, DmpG was overexpressed and purified in order to address the question of whether this polypeptide alone possesses 4-hydroxy-2-ketovalerate aldolase activity. While previous work had indicated that DmpF …
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The exploration of potato-associated bacteria in the Central Andean Highlands and their application in integrated crop management systems
… are needed for crop management practices. Bioprospecting in the Central Andean Highlands resulted in the isolation and in vitro screening of 600 bacterial isolates. The best performing isolates, under in vitro conditions, were field trialled in their home countries. Six of the isolates, …
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Potenciálisan Hydra patogén baktériumok vizsgálata
… oligactis-ra feltételezhetően patogénként ható Pseudomonas sp. és Flavobacterium sp. egyes mikrobiológiai jellemzőit vizsgáltam, továbbá ezen baktériumokkal végeztem fertőzési kísérletet különböző szuszpenzió koncentrációkkal, egy Hydra fajon belül különböző törzsekkel.
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Enhancement of cold tolerance and growth of tomato plants using endophytic bacteria isolated from cold-adapted plants
… impacts crop production. Climate change is responsible for warm winter periods that allow crop production under partial protection, such as commercial greenhouses and tunnels used for tomato production in Sicily. However, temperature conditions are not constant under commercial greenhouse …
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Diseño de consorcios bacterianos potenciadores de la nodulación para la recuperación de estuarios degradados por estreses abióticos utilizando Medicago sativa
… beneficios a los suelos. En Huelva (Andalucía, España) se encuentran estuarios con gran importancia ecológica y económica, como el conjunto de estuarios de los ríos Tinto y Odiel, muy estudiados por ser una de las regiones con mayor contaminación por metales pesados del mundo, y el estuario del …
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Variations in bacterial adenosine triphosphate values due to genus and environmental conditions
Variations in ATP content in three ground beef spoilage bacteria, Lactobacillus brevis, Lactobacillus jensenii, and Pseudomonas sp. were investigated using the bioluminescence (luciferin-luciferase) assay. Environmental factors (temperature, atmosphere, pH, aeration, and phase of growth), as well …
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Bioremediation of modelled petroleum-contaminated soils of the Niger Delta and the impact of zeolite augmentation
… hydrocarbon-degrading bacteria, Acinetobacter sp, Rhodococcus sp and Pseudomonas sp, was investigated. These bacterial strains were selected based on criteria that they were able to utilize hydrocarbons (hexadecane and sodium benzoate) as the sole source of carbon and energy and were able to …
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Bioprospección de microorganismos presentes en hidrocarburos para determinar el potencial productor de biosurfactantes y determinación de equipos principales para su producción.
En este trabajo se presenta el proceso de bioprospección de microorganismos nativos en tres muestras puntuales de hidrocarburos de los departamentos del Casanare y Boyacá, enfocado a la búsqueda de Pseudomonas sp., por ser un grupo reportado en otros países para la producción de ramnolípidos y …
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Biosynthesis of polyhydroxyalkanoates for cardiac tissue engineering applications
… an alternative source of polymers produced by Pseudomonas sp. As Gram-negative bacteria, Pseudomonas sp. contains lipopolysaccharides in the membrane, which are co-purified with PHAs and may cause immunogenic reactions. This limits the biomedical applications of the mcl-PHAs in several cases. …
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The Plant Growth-Promoting Potential of Root-Associated Bacteria from Plants Growing in Stressed Environments
… agriculture and enhanced phytoremediation. Despite their promise, there is still a need to characterize and identify plant growth-promoting bacteria amidst isolates cultured to date. Therefore the purpose of this study was to i) screen bacterial endophytes isolated from plants growing in both …
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Bacteria At Oil-Water Interfaces
… interfaces. I investigate films formed by Pseudomonas sp. P62 at initially pristine interfaces using particle tracking and pendant drop elastometry. Adhered bacteria colonize and form structures at the interface. The interface evolves via three mechanical and dynamical stages. Initially, it …
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Anticancer and antibiotic leads from marine organis
… regulation of antibiotic production from marine Pseudomonas aeruginosa were investigated. Kahalalide F (KF) is a potent anticancer lead isolated from the herbivorous marine mollusk E. rufescens and its algal diet Bryopsis pennata. Our semisynthesis approach was aimed to improve the efficacy or …
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Characterisation of phenol hydroxylase and its auxiliary proteins, DmpM and DmpK, from pseudomonas spl Strain CF600
Phenol hydroxylase from Pseudomonas sp. strain CF600 is an enzyme comprising three components: DmpP, a reductase containing an FAD and a [2Fe-2S] cluster; DmpM, an activator protein required for efficient catalysis; and DmpLNO, an oxygenase containing a binuclear iron cluster. The oxygenase …
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Exploring the reactivity of bacterial multicomponent monooxygenases
… reactivity of the oxygenated diiron units responsible for BMM catalysis. Chapter 2. Revisiting the Mechanism of Dioxygen Activation in Soluble Methane Monooxygenase from M. capsulatus (Bath): Evidence for a Multi-Step, Proton- Dependent Reaction Pathway Stopped-flow kinetic investigations of …
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