Index Catalog // ScholarsArchive@OSU

Growth rate effects during starvation-survival of a marine psychrophilic vibrio

Creator:: Moyer, Craig Lee
Abstract:: Cell populations of the marine bacterium ANT-300, from either batch culture or continuous culture with dilution rates ranging from D = 0.170 h⁻¹ (fast) to D = 0.015 h⁻¹ (slow) were monitored for 98 days under starvation. Viability (CFU), acridine orange direct counts (AODC), and optical density were measured. DNA,...
Resource Type:: Masters Thesis
Full Text:: psychrophilic vibrio AN ABSTRACT OF THE THESIS OF Craig L. Moyer for the degree of Master of Science in

Bacterial 16S ribosomal DNA analysis of pyrrolizidine alkaloid detoxifying enrichments from the ovine rumen

Creator:: Gray, Diane R.
Abstract:: Bacterial cultures enriched from sheep rumen fluid have demonstrated the ability to detoxify pyrrolizidine alkaloids (seneciphylline and jacobine) in tansy ragwort (Senecio jacobaea). The microbes are difficult to isolate using classical anaerobic techniques, therefore, microbes from two different enrichment cultures demonstrating similar degradation activity were identified using their 16S ribosomal...
Resource Type:: Masters Thesis
Full Text:: . Morrie Craig N Bacterial cultures enriched from sheep rumen fluid have demonstrated the ability to

Anaerobic biodegradation of the cyclic nitramines, RDX and HMX, by ovine ruminal microbes

Creator:: Eaton, Hillary L.
Abstract:: Cyclic nitramines released into all environmental compartments through anthropogenic activities are toxic and possibly carcinogenic and mutagenic. Soils on military ranges, located throughout the world in various climatic regions and close to human activities, are especially susceptible to cyclic nitramine contamination. The properties of soils on military ranges will directly...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Hillary L. Eaton for the degree of Doctor of Philosophy in

Ruminal Biodegradation of Heterocyclic Toxic Compounds

Creator:: Tanaree, Dan D.
Abstract:: Cyclic nitramines are a class of compounds that include most of the commonly used explosives today. These are among the most common toxicants released into the environment as a result of human activity, generated on military ranges, battlefields, and production sites. Of these, hexahydro-1,3,5-trinitro-1,3,5- triazine (RDX) is of particular interest,...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ A. Morrie Craig Cyclic nitramines are a class of compounds that include most of the

Biotransformation of 2,4,6-trinitrotoluene by ruminal organisms

Creator:: De Lorme, Marthah J. M.
Abstract:: 2,4,6-Trinitrotoluene (TNT) has been the common munitions used in the world and is an environmental contaminant that is amendable to reductive transformation reactions. The rumen is an extremely reductive environment containing diverse microbial populations. There are 21 pure culture ruminal bacteria species in culture collection, these were tested for the...
Resource Type:: Dissertation
Full Text:: Abstract approved: ________________________________________________ A. Morrie Craig 2,4,6

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:: Craig There have been many studies that describe the protective degradation or metabolism of

Stable isotope probing of the ovine rumen for RDX degrading microorganisms

Creator:: Mitchell, Edward A.
Abstract:: The anaerobic and highly reductive conditions found in the ovine rumen are considered favorable for the degradation of the nitroaromatic explosives such as hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX). In this study, we used stable-isotope-probing to determine the bacteria responsible for the degradation of RDX in the rumen. Results indicate 10 μg mL⁻¹ (45...
Resource Type:: Masters Thesis
Full Text:: : A. Morrie Craig The anaerobic and highly reductive conditions found in the ovine rumen are

Distribution of Clostridium botulinum type E in fish, shellfish and the marine environment of the Pacific Northwest, and protein patterns of the toxigenic and non-toxigenic stains

Creator:: Craig, James Morrison
Abstract:: Interest in the distribution of Clostridium botulinum type E was heightened by the sudden outbreak of human botulism from smoked whitefish chubs and canned tuna fish in 1963. The question arose as to how widely the organism is distributed among fish and shellfish in the Northwest and what potential hazard...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF James Morrison Craig for the (Name

A genomic and proteomic characterization of the first cultured oligotrophic marine Gammaproteobacterium from the SAR92 clade

Creator:: Mellbye, Brett L.
Abstract:: High-throughput culturing (HTC) consisting of extinction culturing in autoclaved seawater has led to the isolation and characterization of many novel strains of oligotrophic marine bacteria. Strain HTCC 2207 was isolated from the Oregon coast by the HTC method. Phylogenetic analysis based on 16S rRNA gene sequence showed that this strain...
Resource Type:: Honors College Thesis
Full Text:: THESIS OF Brett L. Mellbye for the degree of Honors Baccalaureate of Science in Microbiology presented

Assessing disease impacts of hatcheries on downstream salmonids in the Willamette River Basin, Oregon

Creator:: Jakaitis, Michelle
Abstract:: Hatcheries are often perceived as a source of pathogen amplification, potentially increasing disease risk to free-ranging populations; at the same time, free-ranging fishes may introduce pathogens into hatcheries through untreated water sources. Many pathogens exist naturally within the environment (with the exception of introduced pathogens) and the presence of a...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ____________________________________________________________ Jerri L. Bartholomew

ScholarsArchive@OSU

Growth rate effects during starvation-survival of a marine psychrophilic vibrio

Bacterial 16S ribosomal DNA analysis of pyrrolizidine alkaloid detoxifying enrichments from the ovine rumen

Anaerobic biodegradation of the cyclic nitramines, RDX and HMX, by ovine ruminal microbes

Ruminal Biodegradation of Heterocyclic Toxic Compounds

Biotransformation of 2,4,6-trinitrotoluene by ruminal organisms

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

Stable isotope probing of the ovine rumen for RDX degrading microorganisms

Distribution of Clostridium botulinum type E in fish, shellfish and the marine environment of the Pacific Northwest, and protein patterns of the toxigenic and non-toxigenic stains

A genomic and proteomic characterization of the first cultured oligotrophic marine Gammaproteobacterium from the SAR92 clade

Assessing disease impacts of hatcheries on downstream salmonids in the Willamette River Basin, Oregon

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