Index Catalog // ScholarsArchive@OSU

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:: OF Allison L. Creason for the degree of Doctor of Philosophy in Molecular and Cellular Biology

TonB-dependent outer-membrane proteins of Pseudomonas fluorescens : diverse and redundant roles in iron acquisition

Creator:: Hartney, Sierra L.
Abstract:: Pseudomonas is a diverse genus of Gram-negative bacteria that includes pathogens of plants, insects, and humans as well as environmental strains with no known pathogenicity. Pseudomonas fluorescens itself encompasses a heterologous group of bacteria that are prevalent in soil and on foliar and root surfaces of plants. Some strains of...
Resource Type:: Dissertation
Full Text:: , and molecular genetic approaches to predict and analyze the function of these TBDPs

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:: . Thomas for the degree of Doctor of Philosophy in Molecular and Cellular Biology presented on May 4

Outliers: The Unusual Characteristics of Marine Carbon-Oxidizing Bacterial Cells Adapted to Oligotrophic Conditions

Creator:: Noell, Stephen E.
Abstract:: Oligotrophic bacteria are adapted to low nutrient concentrations. As most of the ocean is oligotrophic (low in nutrients), oligotrophic bacteria thrive in the ocean and make up the majority of planktonic cells. Because of this, oligotrophs are crucial to oceanic nutrient cycles. However, marine oligotrophic bacteria are dwarfed by their...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Stephen E. Noell for the degree of Doctor of Philosophy in Molecular and Cellular Biology

Understanding chlamydial biology through genome sequencing and comparative genomics

Creator:: Jeffrey, Brendan
Abstract:: The human pathogen Chlamydia trachomatis displays different phenotypes between serovars both in vivo and in vitro. The study of chlamydial biology has been hampered by the lack of a tractable genetic system. Here, chlamydial isolates with known phenotypes as well as strains generated though recombination were fully sequenced to address...
Resource Type:: Dissertation
Full Text:: THE DISSERTATION OF Brendan Jeffrey for the degree of Doctor of Philosophy in Molecular and Cellular

Laboratory studies of growth conditions of Vibrio parahaemolyticus in Pacific oyster (Crassostrea gigas) with international considerations to shellfish-associated illnesses in South Korea

Creator:: Lee, Jeehye
Abstract:: Vibrio parahaemolyticus, a naturally occurring halophilic pathogen, is seasonally abundant in marine and estuarine environments. It is also the leading cause of gastroenteritis in humans world-wide. Numerous outbreak incidences associated with the pathogenic Vibrio parahaemolyticus contaminations in oyster products have raised public-health concerns as well as economic challenges to the...
Resource Type:: Undergraduate Thesis
Full Text:: molecular mechanism of bacterial adherence to the oyster host in a laboratory setting. Overall, this

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:: ecology of microorganisms and host-associated microbiomes. Host-associated microbial community dynamics

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:: ................................................................................................ 17 Chapter 2: Molecular and Morphological Analysis of Myxobolus spp. of Salmonid Fishes with the

Comparative genomics of Vibrio and characterizing microbial communities at a shellfish hatchery

Creator:: Delgado, Hanna
Abstract:: Vibrio bacteria are commonly found in freshwater, marine, and estuarine environments. Members of this genus can exist in commensal relationships with marine animals or as planktonic bacteria, however, they are well known for their roles as pathogens towards humans and animals. In this dissertation, I investigated aspects of host-bacteria relationships...
Resource Type:: Dissertation
Full Text:: and ecology. Within this research, novel genomes of a wide-ranging assortment of Vibrio are

Evaluation of the colonization and biofilm production by Burkholderia pyroccinia FP62 on geranium leaves

Creator:: Wallace, Patricia K.
Abstract:: The leaf surface is a stark environment for bacterial colonists with limited availability of nutrients, water and protected niches. Despite these limitations, a plethora of bacteria appear to have adapted ways to survive and flourish on leaf surfaces. One mechanism of survival is the formation of biofilms. Biofilms are a...
Resource Type:: Masters Thesis
Full Text:: -Environmental Molecular Sciences Laboratory for their opportunity to become a ‘user’ through a competitive

ScholarsArchive@OSU

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

TonB-dependent outer-membrane proteins of Pseudomonas fluorescens : diverse and redundant roles in iron acquisition

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

Outliers: The Unusual Characteristics of Marine Carbon-Oxidizing Bacterial Cells Adapted to Oligotrophic Conditions

Understanding chlamydial biology through genome sequencing and comparative genomics

Laboratory studies of growth conditions of Vibrio parahaemolyticus in Pacific oyster (Crassostrea gigas) with international considerations to shellfish-associated illnesses in South Korea

Bacterial Predation in Host Microbiomes

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

Comparative genomics of Vibrio and characterizing microbial communities at a shellfish hatchery

Evaluation of the colonization and biofilm production by Burkholderia pyroccinia FP62 on geranium leaves

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