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Filtering by: Funding statement This work was supported by the National Science Foundation of USA award # IOS:0703908 and 1127112. The funders had no role in the study design, data analysis, or preparation of the manuscript. Remove constraint Funding statement: This work was supported by the National Science Foundation of USA award # IOS:0703908 and 1127112. The funders had no role in the study design, data analysis, or preparation of the manuscript. Committee Member Schuster, Martin Remove constraint Committee Member: Schuster, Martin

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  • The role of Salmonella typhimurium type three secretion system (T3SS) and effector proteins in chromatophore cell response.

    Creator:
    Farhad, Mohammad
    Abstract:
    Bacterial contamination of food poses a great risk to human health worldwide. A chromatophore cell-based biosensor, utilizing B. splendens erythrophore cells, is an emerging technology that has shown potential to detect bacterial toxicity based on function-dependent mechanisms. Previous studies have investigated the response of erythrophore cells to foodborne pathogens, pesticides,...
    Resource Type:
    Masters Thesis
    Full Text:
    movement in erythrophore cells. The second objective of this study was to test the hypothesis that the

  • Characterization of the pathogenicity and phylogeny of members of the Rhodococcus genus

    Creator:
    Creason, Allison L.
    Abstract:
    Plant pathogenic Rhodococcus species are persistent pathogens able to cause severe growth deformities on a large range of hosts. The most well studied species, R. fascians is predicted by current models to synthesize a mixture of cytokinins that act to directly perturb the hosts' hormone balances, which results in abnormal...
    Resource Type:
    Dissertation
    Full Text:
    contributed to the conception and design of the work, analysis of data, and wrote and approved the manuscript

  • Context matters : assembly and disorder in the regulation of multivalent complexes

    Creator:
    Jara, Kayla A.
    Abstract:
    Intrinsically disordered proteins (IDPs), protein regions (IDRs), and protein complexes continue to emerge at the forefront of protein science. Proteins and protein regions lacking specific structure are found in all organisms, and often have vital roles in numerous biological processes. Breaking the well-known structure-function paradigm, the understanding of disorder-based functionality...
    Resource Type:
    Dissertation
    Full Text:
    experiments in chapter 5. Elisar Barbar was involved in the design, writing, and analysis of all

  • Bacterial Predation in Host Microbiomes

    Creator:
    Welsh, Rory M.
    Abstract:
    In host-associated microbiomes, the mechanisms that regulate community composition or the principles that govern dynamics remain far from clear. However, understanding how the structure of microbial communities shift as the system moves away from a healthy state is critical to assessing disease progression and to formulate any potential mitigation strategy....
    Resource Type:
    Dissertation
    Full Text:
    experimental design, data analysis, manuscript preparation, and funding of the project. Drs. Jerome Payet

  • 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:
    . This study sought to investigate specific factors utilized by V. parahaemolyticus and, in the process

  • Bacterial community analysis, new exoelectrogen isolation and enhanced performance of microbial electrochemical systems using nano-decorated anodes

    Creator:
    Xu, Shoutao
    Abstract:
    Microbial electrochemical systems (MESs) have attracted much research attention in recent years due to their promising applications in renewable energy generation, bioremediation, and wastewater treatment. In a MES, microorganisms interact with electrodes via electrons, catalyzing oxidation and reduction reactions at the anode and the cathode. The bacterial community of a...
    Resource Type:
    Dissertation
    Full Text:
    utilization by SX-1 increases the application potential of MFCs in renewable energy generation and waste

  • Genome-enabled investigation of the minimal growth requirements andphosphate metabolism for Pelagibacter marine bacteria

    Creator:
    Carini, Paul J.
    Abstract:
    Members of the SAR11 clade of heterotrophic α-proteobacteria are ubiquitous and abundant in the world's oceans where they are thought to play a pivotal role in the global carbon cycle. The first SAR11 bacterium cultivated in vitro, 'Candidatus Pelagibacter ubique' HTCC1062 (Ca. P. ubique), was isolated by dilution into sterile...
    Resource Type:
    Dissertation
    Full Text:
    spent working in his yard fondly, or find myself passing on this love of nature to the next generation

  • Biophysical analyses of peroxiredoxins and a partner reductase

    Creator:
    Hall, Andrea Renée
    Abstract:
    Peroxiredoxins (Prxs) are dominant peroxide-reducing enzymes with two important roles: they protect all organisms from oxidative damage induced by peroxides, and in eukaryotes, they participate in hydrogen peroxide signaling pathways. This dissertation presents studies aimed at the biophysical characterization of select Prxs and a Prx reductase to elucidate their structure-function...
    Resource Type:
    Dissertation
    Full Text:
    Chapter 6. Elisar Barbar was involved in the experimental design, analysis and writing of Chapter 6 and

  • Impacts of multispecies parasitism on coho salmon (Oncorhynchus kisutch) in Oregon

    Creator:
    Ferguson, Jayde A.
    Abstract:
    Diseases caused by parasites are recognized as significant sources of mortality in wild fish populations. I assessed the impacts of multispecies parasitism on a threatened stock of juvenile coho salmon (Oncorhynchus kisutch). A crucial prerequisite to this research was proper identification of parasites, which can be difficult for species lacking...
    Resource Type:
    Dissertation
    Full Text:
    and support. The majority of this research was funded by ODFW through a Fish Health Graduate

  • Identification and characterization of type III effector proteins in plant-associated bacteria

    Creator:
    Thomas, William J.
    Abstract:
    Symbioses between microbes and multicellular eukaryotes are found in all biomes, and encompass a spectrum of symbiotic lifestyles that includes parasitism and disease, commensalism, and mutually beneficial interdependent host-microbe relationships. Regardless of outcome, these symbiotic lifestyles are governed by a complex molecular "courtship" between microbe and potential host. This courtship...
    Resource Type:
    Dissertation
    Full Text:
    relationships observed in nature. This thesis examines the co-evolution and role of bacterial-encoded type