Index Catalog // ScholarsArchive@OSU

Bacterial pathogens and associated toxins involved in erythrophore cell aggregation

Creator:: Hutchison, Janine R.
Abstract:: Current detection methods for bacterial contamination rely on structure based detection of proteins and nucleic acids. While these methods are easy to use and reliable, they cannot evaluate the toxicity of a sample and the potential to cause disease. Previously, erythrophore cells derived from Betta splendens had been suggested as...
Resource Type:: Dissertation
Full Text:: maintained in the proper environment. While they may be more cost-effective, many cell lines have genetic

Chromatophores as cell-based biosensors for the detection of chemically and biologically toxic substances

Creator:: Dukovcic, Stephanie R.
Abstract:: Cell-based biosensors are function-based detectors that use the physiological response of a living cell to sense biologically stimulating agents. This emerging technology extends the application of current detection methods by reporting on the toxicity of a sample and the potential to cause disease. Previously, Betta splendens erythrophores have been described...
Resource Type:: Dissertation
Full Text:: in Microbiology presented on September 9, 2009. Title: Chromatophores as Cell-based Biosensors

Molecular characterization of bacterial populations implicated inthe anaerobic metabolism of toxic plant alkaloids from two different experimental and environmental sources

Creator:: Rattray, Rogan MacKay
Abstract:: There have been many studies that describe the protective degradation or metabolism of potentially harmful plant toxins, such as, mimosine from Leucaena leuconcephala, pyrrolizidine alkaloids from tansy ragwort (Senecio jacobaea), oxalate and some mycotoxins by rumen microbes. There are many cases of plant-related toxicoses suffered by ruminant animals where there...
Resource Type:: Masters Thesis
Full Text:: disruption of cell function or cell death [109]. In South Africa, 5 – 15% of all plant poisonings of

Preventing crown gall disease using oncogene silencing or VirE1-expressing transgenics

Creator:: Humann, Jodi L.
Abstract:: Crown gall disease is caused by the ubiquitous soil bacterium Agrobacterium tumefaciens which transfers a portion if DNA (T-DNA) into the plant cell. Preventing infection by using the biocontrol strain Agrobacterium radiobacter K84 is currently the only defense for crown gall. Two different resistance strategies were examined in this work....
Resource Type:: Dissertation
Full Text:: a portion if DNA (T-DNA) into the plant cell. Preventing infection by using the biocontrol strain

Chlamydiae under stress : environmental conditions influence the production and localization of chlamydial antigens

Creator:: Brown, Wendy J.
Abstract:: Chlamydiae are obligate intracellular pathogens that cause several serious conditions within the human host. Many of the symptoms associated with infection are thought to stem from the development of aberrant, or persistent, chlamydiae. Factors leading to chlamydial persistence include deprivation of amino acids, the release of certain cellular factors, or...
Resource Type:: Dissertation
Full Text:: bacterial cell wall or DNA synthesis. Such changes within the chiamydial environment often lead to

Exploring phylogeny of Rhodococcus fascians isolates using 16S ribosomal DNA sequence analysis

Creator:: Sandberg, Eva Song
Abstract:: Rhodococcus fascians is a Gram-positive, pleiomorphic actinomycete that causes leafy gall formation in a wide range of plant hosts. This particular phytopathogen has been a focus of research at the Oregon State University Plant Clinic, a diagnostic laboratory. Phylogeny of R. fascians isolates obtained from Plant Clinic submissions was determined...
Resource Type:: Honors College Thesis
Full Text:: environmental stress by colonizing more protected regions of the plant such as junctions of epidermal cell walls

The discriminator domain : does it reside at the C-terminus or the N-terminus of Escherichia coli Lon?

Creator:: Miller, Darcey L.
Abstract:: The mechanisms of substrate recognition by regulatory proteases are not well understood. Presently, two opposing models have arisen to describe E. coil Lon's ability to discriminate between substrates: one suggests the N-terminus involvement while the second suggests the C-terminus involvement. In this project, the role of the C-terminal domain as...
Resource Type:: Masters Thesis
Full Text:: substrates RcsA, an activator of colanic acid capsular polysaccharide, and SuIA, an inhibitor of cell

Community profiles of ammonia oxidizers across high-elevation forest-to-meadow transects

Creator:: Mintie, Ann
Abstract:: In recent years considerable interest has been shown in the diversity of ammonia-oxidizing bacteria in soil communities. The majority of the research has been carried out in Northern Europe where soils have received high atmospheric inputs of nitrogen over the past two centuries. In contrast, although much work has been...
Resource Type:: Masters Thesis
Full Text:: . This environment provided an opportunity to determine if differences existed among the ammonia

Interactions between microbial dynamics, water flow, and solute transport in unsaturated porous media

Creator:: Yarwood, Rockie R.
Abstract:: Bioremediation in the vadose zone is unpredictable because of poor understanding of factors influencing microbial growth in this environment. A lab-scale experimental system was developed to examine, noninvasively, interactions between microbial growth, water flow, and solute transport in unsaturated porous media. Measurements of microbial colonization, and its impact on hydrology,...
Resource Type:: Dissertation
Full Text:: influencing microbial growth in this environment. A lab-scale experimental system was developed to examine

The role of chlamydial inclusion membrane proteins in host-pathogen interaction and the development of novel methods for studying chlamydial biology

Creator:: Alzhanov, Damir T.
Abstract:: The majority of our modern understanding of bacterial pathogenesis is based on the strategy that involves screening bacterial genomes for the presence of the genes encoding pathogenic factors, and analysis of these genes via forward and reverse genetics. Chlamydiae represent a unique group of pathogenic bacteria in which it is...
Resource Type:: Dissertation
Full Text:: of the host cell. To study the influence of Inc proteins on host cell biology we used the method

ScholarsArchive@OSU

Bacterial pathogens and associated toxins involved in erythrophore cell aggregation

Chromatophores as cell-based biosensors for the detection of chemically and biologically toxic substances

Molecular characterization of bacterial populations implicated inthe anaerobic metabolism of toxic plant alkaloids from two different experimental and environmental sources

Preventing crown gall disease using oncogene silencing or VirE1-expressing transgenics

Chlamydiae under stress : environmental conditions influence the production and localization of chlamydial antigens

Exploring phylogeny of Rhodococcus fascians isolates using 16S ribosomal DNA sequence analysis

The discriminator domain : does it reside at the C-terminus or the N-terminus of Escherichia coli Lon?

Community profiles of ammonia oxidizers across high-elevation forest-to-meadow transects

Interactions between microbial dynamics, water flow, and solute transport in unsaturated porous media

The role of chlamydial inclusion membrane proteins in host-pathogen interaction and the development of novel methods for studying chlamydial biology

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