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Filtering by: Creator Welter, Stephen C. Remove constraint Creator: Welter, Stephen C. Academic Affiliation Microbiology Remove constraint Academic Affiliation: Microbiology Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Physical and functional characterization of soluble protein antigen(s) produced by Renibacterium salmoninarum

    Creator:
    Turaga, Prasad S. D.
    Abstract:
    Renibacterium salmoninarum produces bacterial kidney disease (BKD) in salmonid fish. Soluble antigen(s) (SA) produced by the bacterium was characterized by physicochemical, functional and immunological methods. The molecular weight determination by SDS-PAGE analysis of SA yielded 14 different molecular weight species. Seven of these species were prominent, 57 kd protein being...
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    Dissertation
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    salrnoninarum Redacted for Privacy Abstract approved: Dr. Stephen L. Kaattari Renibacterium salmoninarum

  • How Do Parasites Infect Salmon? Comparative Transcriptomics Reveal Myxozoan Adaptations for Parasitism

    Creator:
    Americus, Benjamin
    Abstract:
    The phylum Cnidaria contains three main branches: Anthozoa (corals, sea anemones) Medusozoa (jellyfish, hydra), and Endocnidozoa. This latter branch is characterized by parasitism and contains the microscopic fish-parasites Myxozoa. Myxozoa are highly simplified, consisting of only a few cell types, however they have retained the nematocyst stinging cells and complex...
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    Dissertation
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    Stephen Atkinson); c: mature myxospores (from Stephen Atkinson); d: infected Tubifex oligochaete; e

  • Culturing uncultured environmental microorganisms

    Creator:
    Connon, Stephanie A.
    Abstract:
    Research on natural environments, over the last decade, is replete with microbial diversity studies that used culture-independent approaches. The cloning and sequencing of the 16S rRNA genes has been the driving force in the expansion of awareness about the great diversity of previously undiscovered microorganisms. Well-known uncultured groups of microorganisms...
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    Dissertation
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    Redacted for privacy ACKNOWLEDGMENTS I thank Stephen J. Giovannoni and Lewis Semprini for their

  • Glucocorticoid regulation of salmonid B lymphocytes

    Creator:
    Tripp, Ralph A.
    Abstract:
    The in vitro effects of cortisol in regulating salmonid B cell functions were investigated. B cells at three distinct stages of differentiation were examined for cortisol sensitivity. B lymphocyte responses were examined 1) during the early stage of the precursor, 2) during the intermediate stage of differentiation associated with clonal...
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    achievement of this degree. My sincere gratitude is extended to my major professor and friend Dr. Stephen L

  • Marine bacterioplankton abundances and distributions

    Creator:
    Morris, Robert M.
    Abstract:
    Microorganisms play key roles in ocean biogeochemistry. However, several predominant groups of uncultured bacterioplankton thought to contribute to important biogeochemical processes in the oceans are known primarily from gene cloning studies. Although these studies have greatly expanded our view of microbial diversity in the oceans, they are not quantitative and...
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    Redacted for privacy ACKNOWLEDGEMENTS I would like to express my deepest gratitude to Dr. Stephen

  • Microbial diversity, metabolic potential, and transcriptional activity along the inner continental shelf of the Northeast Pacific Ocean

    Creator:
    Bertagnolli, Anthony D.
    Abstract:
    Continental shelves located along eastern boundary currents occupy relatively small volumes of the world’s oceans, yet are responsible for a large proportion of global primary production. The Oregon coast is among these ecosystems. Recent analyses of dissolved oxygen at shallow depths in the water column has suggested increasing episodes of...
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    : _____________________________________________________ Stephen J. Giovannoni Continental shelves located along eastern boundary currents occupy

  • Developmental of a novel affinity ELISA and ita application to the analysis of affinity maturation in trout

    Creator:
    Shapiro, David A.
    Resource Type:
    Dissertation
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    . Abstract approved: Stephen L. Kaattari This study was undertaken to develop a solid phase, enzyme based

  • 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...
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    Dissertation
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    Phosphate Metabolism for Pelagibacter Marine Bacteria Abstract approved: Stephen J. Giovannoni

  • Single-Cell Genomics of Uncultivated Marine Bacteria

    Creator:
    Landry, Zachary
    Abstract:
    Historically, the difficulty of obtaining pure cultures of abundant marine microbial plankton has an obstacle to reconstructing the underlying mechanisms of biogeochemistry in the ocean. While a number of dominant marine species from the ocean surface have been cultured, the dominant microbial plankton of the dark ocean proved far more...
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    Dissertation
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    : ______________________________________________________ Stephen Giovannoni Historically, the difficulty of obtaining pure cultures of abundant marine

  • Structural and functional analysis of the 57 kDa protein produced by the fish pathogen, Renibacterium salmoninarum

    Creator:
    Wiens, Gregory D.
    Abstract:
    Little is known about the virulence factors of Renibacterium salmoninarum, the causative agent of salmonid bacterial kidney disease. The predominant protein produced by R. salmoninarum in broth culture or during infection is a 57/58 kDa protein (p57) which is associated with strain virulence. In this study monoclonal antibodies (MAbs) to...
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    . Renibacterium salmoninarum. RAbstract approved: - edacted for Privacy Stephen L. Kaattari Little is known