Index Catalog // ScholarsArchive@OSU

Vitamin B₁₂ production and depletion in a naturally eutrophic lake

Creator:: Gillespie, P. A.
Abstract:: The vitamin B₁₂ concentrations in both the water and sediments of Klamath Lake were found to vary significantly during a one-year period. The patterns of B₁₂ distribution were remarkably similar among the three main sites. In all cases there was an extremely sharp gradation in concentration in relation to depth...
Resource Type:: Dissertation
Full Text:: in AN ABSTRACT OF THE THESIS OF PAUL ALBERT GILLESPIE

Phylogeny of fish-infecting Calyptospora species (Apicomplexa: Eimeriorina)

Creator:: Whipps, Christopher M., Fournie, John W., Morrison, David A., Azevedo, Carlos, Matos, Edilson, Thebo, Per, and Kent, Michael L.
Abstract:: There are numerous species of apicomplexans that infect poikilothermic vertebrates, such as fishes, and possess unique morphological features that provide insight into the evolution of this important phylum of parasites. Here, the relationship of the fish-infecting Calyptospora species to other coccidians was investigated based on DNA sequence analysis. Genetic data...
Resource Type:: Article
Full Text:: species (Apicomplexa: Eimeriorina) Christopher M. Whipps & John W. Fournie & David A. Morrison & Carlos

The activity of extracellular enzymes in starved and unstarved cells of a psychrophilic marine vibrio

Creator:: Amthor, Kerstin
Abstract:: The psychrophilic marine Vibrio sp., ANT-300, was able to utilize a variety of carbon sources that can be considered typical for the marine environment. The organism grew abundantly on glucose and serine. Chitin was hydrolyzed even when it was offered as the only carbon source, while no growth occurred on...
Resource Type:: Masters Thesis
Full Text:: affinity slightly as indicated by a drop in Km from an initial 88 gM to 60 M. Calculated on a per cell

Establishment of an in vitro System for Studying Mycobacterium avium Protein Secretion

Creator:: Chinison, Jessica J.
Abstract:: Cases of pulmonary diseases caused by Mycobacterium avium complex (MAC) have increased over the years and have become a major health concern in Europe, Asia, and the United States. MAC, comprised of M. avium species and M. intracellulare, are found everywhere in the environment: in water sources and the soil....
Resource Type:: Masters Thesis
Full Text:: . MAC, comprised of M. avium species and M. intracellulare, are found everywhere in the environment

Thermally induced leakage and viability studies in an obligate psychrophilic marine bacterium

Creator:: Kenis, Paul Robert
Abstract:: Vibrio marinus MP-1, an obligate psychrophilic marine bacterium, was severely damaged when heat-shocked in the presence of nutrients. Thermally induced leakage materials from cells tested for in the medium were 260 mμ absorbing material (nucleic acids), orcinol reacting material (RNA), ninhydrin reacting material (amino acids), protein, malic dehydrogenase, and glucose-6-phosphate...
Resource Type:: Masters Thesis
Full Text:: for financial support my parents for their faith and encouragement Joe and Janice Hanus for

The effects of hydrostatic pressure and temperature on the uptake and utilization of amino acids by a facultatively psychrophilic marine bacterium

Creator:: Paul, Kala Lapidus
Abstract:: The transport response of four marine psychrophilic bacteria to a variety of substrates was determined and related to environmental conditions. Studies on pressure and temperature effects on glutamic acid transport and utilization indicated that high pressures and low temperatures inhibit glutamate transport, while permitting glutamate respiration. Similar results were obtained...
Resource Type:: Masters Thesis
Full Text:: four amino acids differed at 5 C. The differences in pressure effects m respiration is thought to be

Determination of differential gene action in Bdellovibrio bacteriovorus using RNA-DNA hybridization techniques

Creator:: Reed, Margaret Ann
Abstract:: In an attempt to study the times in the lifecycle of Bdellovibrio bacteriovorus at which various genes are transcribed, the patterns of messenger ribonucleic acid (mRNA) and ribosomal ribonucleic acid (rRNA) syntheses were examined using two different types of hybridization systems. The hybridization system using membrane bound deoxyribonucleic acid (DNA)...
Resource Type:: Masters Thesis
Full Text:: 16% of the m-RNA during all the time periods tested, and 8% (that fraction which retained the

Molecular genetic analysis of vaccinia virus genes which confer resistance to alpha-amanitin

Creator:: Tamin, Azaibi
Abstract:: Several laboratories have shown that the VV replication cycle is dependent on the host cell nucleus. The basic biological observation is that if the host cell nucleus is physically removed by cytochalasin B-mediated enucleation, functionally inactivated by UV-irradiation, or selectively blocked with a-amanitin, the results are the same: W is...
Resource Type:: Dissertation
Full Text:: HindIII N/M region of the genome by the use of marker rescue techniques [E.C. Villarreal and D.E. Hruby

Antagonistic properties of aquatic myxobacteria and pseudomonads

Creator:: Burnison, Bryan Kent
Abstract:: Certain species of the orders Myxobacterales and Pseudo-monadales are well-known antagonists. Pseudomonas fluorescens and Pseudomonas putida have been reported to produce bacteriostatic and bactericidal substances. Among the myxobacteria there are various species which are known for their ability to produce lytic enzymes and antibiotics. Organisms from both of these groups...
Resource Type:: Masters Thesis
Full Text:: (Major) presented on M. S. (Degree) May 11, 1968 (Date) Title: ANTAGONISTIC PROPERTIES OF

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:: increases in the population, as the benefit provided by the cooperator becomes dilute (Ross-Gillespie et

ScholarsArchive@OSU

Vitamin B₁₂ production and depletion in a naturally eutrophic lake

Phylogeny of fish-infecting Calyptospora species (Apicomplexa: Eimeriorina)

The activity of extracellular enzymes in starved and unstarved cells of a psychrophilic marine vibrio

Establishment of an in vitro System for Studying Mycobacterium avium Protein Secretion

Thermally induced leakage and viability studies in an obligate psychrophilic marine bacterium

The effects of hydrostatic pressure and temperature on the uptake and utilization of amino acids by a facultatively psychrophilic marine bacterium

Determination of differential gene action in Bdellovibrio bacteriovorus using RNA-DNA hybridization techniques

Molecular genetic analysis of vaccinia virus genes which confer resistance to alpha-amanitin

Antagonistic properties of aquatic myxobacteria and pseudomonads

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

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