Index Catalog // ScholarsArchive@OSU

Ecological study of aquatic myxobacteria in a woodland stream

Creator:: Carlson, René Virginia
Abstract:: Most studies of bacteria in water have concerned public health; little attention has been given to organisms which are indigenous to the aquatic environment. Myxobacteria are known to occur in soil, in the marine environment, and several have been studied in relation to diseases of salmonid fishes. However, little information...
Resource Type:: Masters Thesis
Full Text:: Myxobacteria in a Woodland Stream by Rene' Virginia Carlson A THESIS submitted to Oregon State University

Hydraulic predictors and seasonal distribution of Manayunkia speciosa density in the Klamath River, CA, with implications for ceratomyxosis, a disease of salmon and trout

Creator:: Jordan, Michelle S.
Abstract:: The freshwater polychaete Manayunkia speciosa was identified as an obligate host of the salmonid parasite Ceratomyxa shasta in 1997, prompting increased research on the small benthic invertebrate. Ceratomyxa shasta infection in fish can cause mortality, and presents a disease risk for both hatchery and wild salmon and trout. Ceratomyxa shasta...
Resource Type:: Masters Thesis
Full Text:: . International Journal of River Basin Management, 8(1), 93-107. doi: 10.1080/15715121003715123 Connolly, N. M

Cooperation and conflict in Pseudomonas aeruginosa quorum sensing

Creator:: Wilder, Cara N.
Abstract:: Pseudomonas aeruginosa is an environmental bacterium as well as an opportunistic pathogen that primarily infects immunocompromised individuals, including those suffering from cystic fibrosis. The density-dependent regulation of gene expression via cell-to-cell communication, also termed quorum sensing (QS), is an important virulence determinant in this organism. Generally, P. aeruginosa uses three...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Cara N. Wilder for

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:: Reside at the C-terminus or the N-terminus of Escherichia coli Lon? Abstract approved: Janine E. Trempy

Escherichia coli uracil-DNA glycosylase : DNA binding, catalysis, and mechanism of action

Creator:: Shroyer, Mary Jane N.
Resource Type:: Masters Thesis
Full Text:: , catalysis, and mechanism of action AN ABSTRACT OF THE THESIS OF Mary Jane N. Shroyer for the degree of

Delineation of the composition of an indigenous soil population of Rhizobium meliloti in root nodules of uninoculated field grown Medicago sativa L.

Creator:: Jenkins, Michael B.
Abstract:: Agronomic and microbiological studies were conducted on "Anchor" alfalfa (Medicago sativa L.) established from uninoculated seed on three Aridisols in central Oregon. Significant responses to 230 Kg N per ha (NH₄NO₃), which was applied in mid-April and after each first and second harvests, were observed in yield parameters of the...
Resource Type:: Dissertation
Full Text:: . Significant responses to 230 Kg N per ha (NH4NO3), which was applied in mid-April and after each first and

Social Evolution and Regulatory Architecture of Pseudomonas aeruginosa Quorum Sensing

Creator:: Asfahl, Kyle L.
Abstract:: Cell-cell communication in bacteria is understood to facilitate the coordination of population-wide cooperative behavior in the form of concerted gene expression. The opportunistic pathogen Pseudomonas aeruginosa uses such a communication mechanism to regulate a large group of genes important to virulence strategies in this bacterium. This general mechanism of communication...
Resource Type:: Dissertation
Full Text:: . aeruginosa, like many Gram-negative Proteobacteria, is mediated through the synthesis of diffusible N-acyl

Molecular and genetic assessment of selected antiporters and methyl-accepting chemotaxis proteins in Vibrio cholerae

Creator:: Quinn, Matthew J.
Abstract:: The pathogen Vibrio cholerae uses cations as a primary currency of virulence and environmental persistence, using gradients of those cations to move, acquire nutrients, and control virulence gene expression. An understanding of the overlapping roles of bioenergetics and chemotaxis in the virulence and environmental survival of V. cholerae issues from...
Resource Type:: Dissertation
Full Text:: complementation, to direct chemotaxis towards N-acetyl- glucosamine. Additional observations are described

The Fitness Costs and Regulatory Strategies of Cooperative Siderophore Production in Pseudomonas

Creator:: Sexton, David
Abstract:: Cooperative behaviors in bacteria are increasingly appreciated for their relevance to microbial ecology and utility as model systems for social evolution. One example is the secretion of siderophores, a structurally diverse group of compounds that chelate extracellular iron. Siderophore production is considered cooperative because the benefits can be shared with...
Resource Type:: Dissertation
Full Text:: -dependent mechanism (Noinaj et al., 2010). 6 FpvA interacts with TonB through a conserved N

Predicted Redistribution of Ceratomyxa shasta Genotypes with Salmonid Passage in the Deschutes River, Oregon

Creator:: Stinson, Matthew E. T. and Bartholomew, Jerri L.
Abstract:: Aseries of dams on the Deschutes River, Oregon, act as migration barriers that segregate the river system into upper and lower basins. Proposed fish passage between basins would reunite populations of native potamodromous fish and allow anadromous fish of Deschutes River origin access to the upper basin. We assessed the...
Resource Type:: Article
Full Text:: -river sentinel 274 D ow nl oa de d by [ O re go n St at e U ni ve rs ity ] at 0 6

ScholarsArchive@OSU

Ecological study of aquatic myxobacteria in a woodland stream

Hydraulic predictors and seasonal distribution of Manayunkia speciosa density in the Klamath River, CA, with implications for ceratomyxosis, a disease of salmon and trout

Cooperation and conflict in Pseudomonas aeruginosa quorum sensing

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

Escherichia coli uracil-DNA glycosylase : DNA binding, catalysis, and mechanism of action

Delineation of the composition of an indigenous soil population of Rhizobium meliloti in root nodules of uninoculated field grown Medicago sativa L.

Social Evolution and Regulatory Architecture of Pseudomonas aeruginosa Quorum Sensing

Molecular and genetic assessment of selected antiporters and methyl-accepting chemotaxis proteins in Vibrio cholerae

The Fitness Costs and Regulatory Strategies of Cooperative Siderophore Production in Pseudomonas

Predicted Redistribution of Ceratomyxa shasta Genotypes with Salmonid Passage in the Deschutes River, Oregon

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