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Filtering by: Creator Oakley, Stewart M. Remove constraint Creator: Oakley, Stewart M. Degree Field Microbiology Remove constraint Degree Field: Microbiology

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  • Reef Microbiomes of Mo'orea, French Polynesia, a Socio-Ecological Island System

    Creator:
    McConnell, Kaitlin M.
    Abstract:
    At a time of rapid global change, a socio-ecological system (SES) approach can provide a framework through which to quantify and communicate the risks and uncertainties of coupled human-natural systems. Islands, and tropical coral reef islands in particular, can be excellent models for SES research since they may be considered...
    Resource Type:
    Masters Thesis

  • Anaerobic biodegradation of the cyclic nitramines, RDX and HMX, by ovine ruminal microbes

    Creator:
    Eaton, Hillary L.
    Abstract:
    Cyclic nitramines released into all environmental compartments through anthropogenic activities are toxic and possibly carcinogenic and mutagenic. Soils on military ranges, located throughout the world in various climatic regions and close to human activities, are especially susceptible to cyclic nitramine contamination. The properties of soils on military ranges will directly...
    Resource Type:
    Dissertation
    Full Text:
    and HMX, by Ovine Ruminal Microbes Abstract approved: Albert M

  • Consequences of Influenza A Virus on Pneumococcal Biofilm Formation and Stability in the Absence of Host Factors

    Creator:
    Nutter, Laura
    Abstract:
    Streptococcus pneumoniae and Influenza A Virus both primarily infect the upper respiratory tract, with more severe disease occurring during coinfection than would be caused by either pathogen independently. Until recently, characterization of the interactions between these two pathogens has occurred exclusively in the context of a host or using host-derived...
    Resource Type:
    Masters Thesis
    Full Text:
    M. Rowe Streptococcus pneumoniae and Influenza A Virus both primarily infect the upper respiratory

  • Harnessing Heterogeneity in Human Gut Microbiome Data

    Creator:
    Tataru, Christine
    Abstract:
    The focus of this thesis is to design, characterize, and apply novel computational methods and molecular systems to interrogate heterogeneous human gut microbiome-related phenomena. In Chapter 2, I design, implement, and characterize a method for embedding co-occurrence patterns derived from massive 16s amplicon datasets. I use this method to 1....
    Resource Type:
    Dissertation
    Full Text:
    : Harnessing Heterogeneity in Human Gut Microbiome Data Abstract approved: Maude M. David The focus of this

  • Advances in Freshwater Cyanobacterial Genomics

    Creator:
    Brown, Nathaniel M.
    Abstract:
    Limnology is undergoing a transition to high-throughput -omic analysis of freshwater bacterial communities. An important first step in making the transition is to characterize several genomes that can be used as references to guide metagenome assembly and analysis. Here I characterize four new freshwater cyanobacterial genomes, a pair of lake...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Nathaniel M. Brown for

  • Analysis of Mutations Affecting Cooperation in Pseudomonas aeruginosa Populations

    Creator:
    Robinson, Tanner M.
    Abstract:
    In a process called quorum sensing (QS), the bacterial pathogen Pseudomonas aeruginosa uses small diffusible signals to coordinate cooperative behaviors via secreted “public goods”. Under QS-dependent growth conditions, social cheaters arise with mutations in lasR, the gene for the primary QS signal receptor. These cheaters do not produce public goods....
    Resource Type:
    Masters Thesis
    Full Text:
    , Foglino M, Bycroft BW, Stewart G, Lazdunski A, Williams P. 1995. Multiple homologues of LuxR and Luxl

  • Investigating Vibrio parahaemolyticus interactions with the Pacific oyster, Crassostrea gigas

    Creator:
    Aagesen, Alisha M.
    Abstract:
    Vibrio parahaemolyticus is a Gram-negative, halophilic, human pathogenic bacterium ubiquitous in the marine environment. Like many Vibrio species, V. parahaemolyticus commonly associates with shellfish, particularly oysters. Ingestion of a raw or under cooked oysters contaminated with V. parahaemolyticus can cause gastroenteritis, which is typically self-limiting and rarely causes death. Globally,...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Alisha M. Aagesen for the degree of Doctor of Philosophy in

  • Deschutes River Salmonid Risk of Enteronecrosis in a Changing Climate

    Creator:
    Yusova, Sofiya
    Abstract:
    Ceratonova shasta is an obligate endoparasite of salmonid fish that is endemic to the Pacific Northwest of North America. The parasite has a complicated lifecycle with two distinct spore stages and two obligate hosts, a salmonid and a freshwater annelid. Myxospores released from infected salmonid hosts, infect Manayunkia occidentalis (freshwater...
    Resource Type:
    Masters Thesis
    Full Text:
    Chapter 3 I explored relationships between spatial distribution of C. shasta and M. occidentalis

  • Biotransformation of 2,4,6-trinitrotoluene by ruminal organisms

    Creator:
    De Lorme, Marthah J. M.
    Abstract:
    2,4,6-Trinitrotoluene (TNT) has been the common munitions used in the world and is an environmental contaminant that is amendable to reductive transformation reactions. The rumen is an extremely reductive environment containing diverse microbial populations. There are 21 pure culture ruminal bacteria species in culture collection, these were tested for the...
    Resource Type:
    Dissertation
    Full Text:
    ) reverse osmosis water purification system was used to generate Milli-Q (resistance >18.2 MΩ-cm) quality

  • Recovery of Saccharomyces cerevisiae from ethanol-induced growth inhibition

    Creator:
    Walker, Helen M. (Helen Marguerite), 1961-
    Abstract:
    Ethanol caused altered mobility of the lipophylic probe, 1,6-diphenyl-1,3,5-hexatriene in plasma membrane preparations of Saccharomyces cerevisiae. Because lipids had been shown to protect yeast against ethanol toxicity, sterols, fatty acids, proteins, and combinations of these were tested, but protection from growth inhibition was not seen. Ethanol-induced prolonged lag periods and...
    Resource Type:
    Masters Thesis
    Full Text:
    growth inhibition AN ABSTRACT CF THE THESIS OF Helen M. Walker for the degree of Master of Science in