Index Catalog // ScholarsArchive@OSU

Biogeochemical Processing of Freshwater Carbon in the Anthropocene

Creator:: Buser, Jessica Z.
Abstract:: Freshwater systems cycle carbon along a spatial and temporal biogeochemical continuum, across which ecosystem processes contribute to transformations of organic matter (OM). Various ecological constraints impact rates OM transformation and production and consumption of the energetic end of respiration, methane. Microbiological processing and complete reduction of carbon substrates to methane...
Resource Type:: Dissertation
Full Text:: Microbiology presented on December 5, 2023 Title: Biogeochemical Processing of Freshwater Carbon in the

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:: Nutter for the degree of Master of Science in Microbiology presented on December 11, 2023 Title

Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

Creator:: Collart, Lindsay P.
Abstract:: Toxin production by cyanobacterial harmful algal blooms (cyanoHABs) in freshwater systems has lasting ecological and human impacts. Nutrients, light availability, hydrology, and microbial community composition impact the frequency and intensity of toxic cyanoHABs. Climate change will exacerbate toxic cyanoHABs, making real time and predictive monitoring a vital tool for managing...
Resource Type:: Dissertation
Full Text:: P. Collart for the degree of Doctor of Philosophy in Microbiology presented on June 2, 2023

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...
Resource Type:: Dissertation
Full Text:: Benjamin Americus for the degree of Doctor of Philosophy in Microbiology presented on May 23, 2023

The Social Interactions of Pseudomonas aeruginosa

Creator:: Smith, Parker
Abstract:: Pseudomonas aeruginosa is a ubiquitous environmental microbe, opportunistic pathogen, and a highly social organism. P. aeruginosa utilizes a wide array of cooperative behaviors to adapt to the environmental conditions around it. These behaviors include quorum sensing (QS), a form a cell-to-cell signaling that coordinates the expression of secreted products in...
Resource Type:: Dissertation
Full Text:: Smith for the degree of Doctor of Philosophy in Microbiology presented on March 2, 2023 Title: The

Sterol 24(28) methylene reductase in Saccharomyces cerevisiae

Creator:: Neal, William Daniel
Abstract:: A cell free extract from Saccharomyces cerevisiae containing the enzyme that causes reduction of the 24(28)methylene group on the side chain of ergosterol has been studied. Optimal conditions for the 24(28)methylene reductase were obtained. The enzyme activity was increased in cells grown with ethanol as the substrate. The Km was...
Resource Type:: Masters Thesis
Full Text:: -adenosylmethionine and ergosterol synthesis. J. Amer. Chem. Soc. 80:2023. 2725. Pressman, B.C. 1970. In Membranes

The role of S-adenosylmethionine in the biosynthesis of ergosterol and related sterols in Saccharomyces cerevisiae

Creator:: Turner, Jan Ross
Abstract:: An enzyme system was prepared from Saccharomyces cerevisiae, strain MCC, which carries out the transfer of the methyl group from S-adenosylmethionine or methionine to the side chain of yeast sterols. The cell-free system has been shown to be incapable of synthesizing ergosterol but carries out the synthesis of two as...
Resource Type:: Dissertation

Genetic variation of chlamydial Inc proteins

Creator:: Viratyosin, Wasna
Abstract:: Genomic analysis is a new approach for the characterization and investigation of novel genes, gene clusters, the function of uncharacterized proteins, and genetic diversity in microorganisms. These approaches are important for the study of chlamydiae, a system in which several genomes have been sequenced but in which techniques for genetic...
Resource Type:: Dissertation

Expanding Diagnostic Assays for Pseudoloma neurophilia & Description of the Progression of Infection in Adult Zebrafish Populations

Creator:: Schuster, Corbin J.
Abstract:: Pseudoloma neurophilia is the most common pathogen reported in zebrafish (Danio rerio) research facilities and is an important threat to the zebrafish model. This microsporidian parasite can cause clinical disease, but more importantly is a causative agent of non-protocol induced variation in research. Studies utilizing infected zebrafish, could potentially confound...
Resource Type:: Dissertation

Regulation of the terminal reactions for methionine biosynthesis in yeast

Creator:: Spence, Kemet Dean
Abstract:: Studies were carried out to elucidate the mechanism of enzymatic control of methionine biosynthesis in Saccharomyces cerevisiae. Enzymatic studies demonstrated that, in addition to the methionine activating enzyme, the S-adenosylmethionine:homocysteine transmethylase enzyme was induced during cultivation in the presence of excess methionine. A similar, though reduced effect was observed when...
Resource Type:: Dissertation

ScholarsArchive@OSU

Biogeochemical Processing of Freshwater Carbon in the Anthropocene

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

Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

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

The Social Interactions of Pseudomonas aeruginosa

Sterol 24(28) methylene reductase in Saccharomyces cerevisiae

The role of S-adenosylmethionine in the biosynthesis of ergosterol and related sterols in Saccharomyces cerevisiae

Genetic variation of chlamydial Inc proteins

Expanding Diagnostic Assays for Pseudoloma neurophilia & Description of the Progression of Infection in Adult Zebrafish Populations

Regulation of the terminal reactions for methionine biosynthesis in yeast

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