Index Catalog // ScholarsArchive@OSU

Comparisons of calicivirus pathotypes using oligonucleotide patterns from two-dimensional gel electrophoresis

Creator:: Gambee, Jay E.
Abstract:: Six serotypes of calicivirus (San Miguel Sea Lion Virus types 4,6,7 and 13, Mink Calicivirus and Reptile Calicivirus) were plaque purified, and two-dimensional gel electrophoresis fingerprints, of the ³²P-labeled Ribonuclease T1 digested viral RNA, were performed for each serotype. Fingerprints revealed several oligonucleotides with similar mobilities, and therefore, possibly similar...
Resource Type:: Masters Thesis
Full Text:: professor, Dr. Alvin W. Smith, for his helpful discussions and guidance, and for providing a place to work

Morphologic, molecular and antigenic characteristics of Bacteroides nodosus

Creator:: Gradin, Joseph Lloyd
Resource Type:: Dissertation
Full Text:: Bactt.!idel'' sus Pili Abstract approved: Redacted for privacy Alvin W. Smith V Bacteroides nodosus is

Physical and chemical properties of some Bdellovibrio extracellular proteases

Creator:: Klubek, Brian Paul
Abstract:: Bdellovibrio bacteriovorus 100 and B. stolpii UKi-2 each produce two extracellular proteases which attack Azocoll (collagen) while B. starrii A3.12 produces at least four such proteolytic enzymes. Under standard growth and assay conditions each Bdellovibrio species produces a unique amount of proteolytic activity. The decreasing order of enzyme units was...
Resource Type:: Masters Thesis
Full Text:: , 1973 Typed by Illa W. Atwood for Brian Paul Klubek ACKNOWLEDGEMENT This thesis has been completed

The Social Interactions of Pseudomonas aeruginosa

Creator:: Smith, Parker
Abstract:: Pseudomonas aeruginosa is a ubiquitous environmental microbe, opportunistic pathogen, and a highly social organism. P. aeruginosa utilizes a wide array of cooperative behaviors to adapt to the environmental conditions around it. These behaviors include quorum sensing (QS), a form a cell-to-cell signaling that coordinates the expression of secreted products in...
Resource Type:: Dissertation
Full Text:: Smith for the degree of Doctor of Philosophy in Microbiology presented on March 2, 2023 Title: The

The MAV_4644 dual-function channel protein with putative ADP-ribosyltransferase activity of Mycobacterium avium is required for virulence within host macrophages

Creator:: Lewis, Matthew S.
Abstract:: Mycobacterium avium subspecies hominissuis (MAH) is an opportunistic pathogen that is ubiquitous in the environment and often isolated from faucets and showerheads. MAH mostly infects humans with an underlying disease, such as chronic pulmonary disorder (COPD), cystic fibrosis (CF), or are immunocompromised, though infections in patients without concurrent disease are...
Resource Type:: Masters Thesis
Full Text:: contributions to my professional and personal development. Thank you also to my committee members, Brian Dolan

The Role of the Mucosal Immunoglobulin IgT and Inflammatory Cytokines in Ceratonova shasta Infections in Rainbow Trout

Creator:: Taggart-Murphy, Laura M.
Abstract:: The myxozoan parasite Ceratonova shasta threatens both juvenile and adult salmonid populations in the Pacific Northwest region of the United States, causing intestine necrosis and hemorrhaging, along with high mortality in some fish strains. It induces an inflammatory tissue response in susceptible strains of fish; understanding the interactions between C....
Resource Type:: Masters Thesis
Full Text:: my committee member and research collaborator, Dr. Brian Dolan, thank you for your help in shaping

Factors affecting mitochondrial respiration in yeast

Creator:: Hough, Susan Carol
Abstract:: Two experimental approaches have been used to investigate the interaction of sterols with respiration in yeast. Cells were tested with an antifungal sterol, azasterol, and a mutant was obtained with an altered sterol composition. Polarographic measurements were done on mitochondria for both experiments. The effects of azasterol on mitochondrial respiration...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for Privacy iLeo W. Parks Two experimental approaches have been used to

Advances in Freshwater Cyanobacterial Genomics

Creator:: Brown, Nathaniel M.
Abstract:: Limnology is undergoing a transition to high-throughput -omic analysis of freshwater bacterial communities. An important first step in making the transition is to characterize several genomes that can be used as references to guide metagenome assembly and analysis. Here I characterize four new freshwater cyanobacterial genomes, a pair of lake...
Resource Type:: Dissertation
Full Text:: Freshwater Cyanobacterial Genomics Abstract approved: Theo W. Dreher Limnology is undergoing a transition

Characterization of Mycobacterium avium subsp. hominissuis Interactions with Host Macrophages and Multinucleated Giant Cells

Creator:: Joseph, Jayanthi J.
Abstract:: To examine the macrophage response to M. avium, I compared inflammasome and cytosolic sensor expression and activation. My result demonstrated that virulent strains of M. avium (A5 and 104) suppress IL-1β production and induce IFN-β production in macrophages. M. avium mutants deficient at DNA export in the biofilm exhibited reduced...
Resource Type:: Dissertation
Full Text:: me through the administrative side of graduate school. I would also like to thank Dr. Brian Dolan

Effects of propionibacterial metabolites on spoilage and pathogenic bacteria in dairy products

Creator:: Teo, Alex Yeow-Lim
Resource Type:: Masters Thesis
Full Text:: like to express my appreciation to Dr. W. E. Sandine for giving me the opportunity and privilege of

Effect of feeding concentrates of Lactobacillus organisms on intestinal colonization by Escherichia coli in swine

Creator:: Muralidhara, K. S.
Abstract:: A Lactobacillus species of human intestinal origin (strain MLC) used in swine feeding experiments was characterized using biochemical, genetic and serological techniques and found to be Lactobacillus lactis. Bottle feeding of the MLC strain in concentrate form (> 10⁹ cfu/ml) resulted in a reduction in both fecal coliforms and the...
Resource Type:: Dissertation
Full Text:: COLONIZATION BY ESCHERICHIA COLI IN SWINE Abstract approved: Redacted for privacy (Dr. W. E. Sandine) A

Detection of staphylococcal enterotoxin A by Laurell electroimmunodiffusion

Creator:: Gasper, Ekkehart
Abstract:: The serological detection of staphylococcal enterotoxin A by the quantitative technique of Laurell electroimmunodiffusion is described as well as the application of the technique to the detection of small quantities of enterotoxin A in foods. High dilutions of type-specific rabbit antiserum were used in 1% agarose gels, 1 mm thick,...
Resource Type:: Dissertation
Full Text:: LAURELL ELE,OTROWIONO9'IyArSq)N Abstract approved: Redacted for PrivacyLe, f..." Dr. Arthur W. Anderson

Methods of identifying food poisoning staphylococci

Creator:: Orth, Donald Simms
Abstract:: Several biochemical tests were studied to determine their correlation with coagulase activity. The lysozyme test was in perfect agreement with the coagulase test for the strains studied. Mannitol fermentation and egg yolk lipase tests were in agreement with the coagulase test for 96% of the coagulase positive strains. Sheep red...
Resource Type:: Masters Thesis
Full Text:: : METHODS OF IDENTIFYING FOOD POISONING STAPHYLO- COCCI Abstract approved: Redacted for Privacy Arth'ar W

A study of the function and physiological forms of ergosterol in Saccharomyces cerevisiae

Creator:: Adams, Bruce Gordon
Abstract:: A water-soluble complex containing ergosterol together with a component of yeast has been isolated. The complex can be isolated from commercial yeast extract to which ergosterol has been added or directly from whole yeast cells. The complexing agent from yeast extract is also capable of solubilizing cholesterol and a long...
Resource Type:: Dissertation
Full Text:: requirements for the degree of Doctor of Philosophy June 1968 ACKNOWLEDGEMENT To Dr. Leo W. Parks

Factors affecting slime accumulation in fiberboard mill process water

Creator:: Minelli, Michael Philip
Abstract:: The objectives for this study were to determine the causes of slime formation in activated sludge treatment and to recommend possible control measures. The primary problem was a seasonal filamentous bulking which was caused by the mold, Geotrichum candidum. During the winter, mycelial fibers appeared and formed a free floating...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGMENTS To Dr. Arthur W. Anderson, my major professor, special gratitude for guidance and encouragement

Search for protein-protein interactions underlying the cis-preferential replication of turnip yellow mosaic virus

Creator:: Wallace, S. Ellen
Abstract:: Coreplication experiments have revealed that replication of turnip yellow mosaic virus (TYMV) RNA in turnip protoplasts is cis-preferential. Genomes encoding mutant p141 or p66, proteins essential for virus replication, were inefficiently rescued by a helper genome. One model for the cis-preferential replication of TYMV is that p66 and p141 form...
Resource Type:: Masters Thesis
Full Text:: : Theo W. Dreher Coreplication experiments have revealed that replication of turnip yellow mosaic virus

Methionine biosynthesis in Saccharomyces cerevisiae : the one-carbon transfer portion of the pathway

Creator:: Trewyn, Ronny William
Abstract:: The generation of the methyl group of methionine, and is also involved in thymidylic acid and purine biosynthesis. The understanding of the mechanisms and controls involved in one-carbon metabolism is incomplete, and is complicated by the existence of conjugated folate cofactors containing up to seven glutamic acid residues. The information...
Resource Type:: Dissertation
Full Text:: PORTION OF THE PATHWAY Abstract approved: Redacted for Privacy L. W. Parks The folate mediated one

Biophysical properties of the turnip yellow mosaic virus explored by coat protein mutagenesis

Creator:: Powell, Joshua D.
Abstract:: Plant viruses have been instrumental in our understanding of the biophysical properties pertaining to non-enveloped icosahedral virus particles. A substantial amount of research has been performed over five decades on Turnip yellow mosaic virus (TYMV), arguably one of the most extensively studied icosahedral plant viruses and the type-member of the...
Resource Type:: Dissertation
Full Text:: :_____________________________________________________ Theo W. Dreher Plant viruses have been instrumental in our understanding of the

Studies on the fatty acid and lipid composition of Clostridium botulinum

Creator:: McCollough, Marian Lorraine
Abstract:: Routine studies of bacterial fatty acid and lipid composition, made possible by recently developed techniques, have brought about an increasing interest in the physiological significance of these compounds. The purpose of this study was to characterize the fatty acids of the vegetative cells of Clostridium botulinum 33A, as the first...
Resource Type:: Masters Thesis
Full Text:: . Arthur W. Anderson, for giving me the opportunity to conduct this study and for his guidance and

The terminal reactions in the biosynthesis of methionine in Saccharomyces cerevisiae

Creator:: Pigg, C. JoAnne
Abstract:: The terminal reactions in the biosynthetic pathway of methionine in Saccharomyces cerevisiae were investigated in this study. Analyses of a number of methionine auxotrophs for biochemical deficiences established four mutant groups. It was observed from qualitative feeding experiments that some auxotrophs were able to utilize S-adenosylmethionine (AM) and S-adenosyl-homocysteine (AH)...
Resource Type:: Dissertation
Full Text:: thesis is presented Typed by Ruth Baines May 10, 1965 ACKNOWLEDGMENTS I wish to thank Dr. Leo W

Yeast extractives in the nutrition of San Francisco sourdough bacteria (Lactobacillus sanfrancisco)

Creator:: Berg, Ronald Wayne
Abstract:: A laboratory-prepared hot-water extract of yeast is required for vigorous growth of San Francisco sourdough bacteria (Lactobacillus sanfrancisco) in pure culture. This requirement was examined with the goal of determining what is unique about fresh yeast extractives (commercial extractives exhibit much lower growth promoting activity), and which components of fresh...
Resource Type:: Dissertation
Full Text:: SANFRANCISCO) Redacted for privacy Abstract approved: Dr. A. W. Anderson A laboratory-prepared hot-water

Photooxidative degradation of annual rye-grass straw to substrates enhancing rhodotorula mucilaginosa growth

Creator:: Park, Jerry Eugene
Abstract:: Annual ryegrass (Lolium multiflorum) is a major seed crop in the Willamette Valley of Oregon. Persistent crop diseases have necessitated annual field burning to protect future crops. This practice, while very effective for disease eradication, produces large quantities of air polluting smoke in the valley and a general wastage of...
Resource Type:: Dissertation
Full Text:: Abstract approved: Redacted for privacy A. W. Anderson Annual ryegrass (Lolium multiflorum) is a major

Studies on cellulase production from annual ryegrass straw by Trichoderma reesei

Creator:: Orberg, Paulo K.
Resource Type:: Masters Thesis
Full Text:: FROM ANNUAL RYEGRASS STRAW BY Abstract approved: liaug-2034-21423-1,/, Redacted for Privacy Dr. A. W

Effect of mercury on β-galactosidase activity : possible relationship to lactose intolerance

Creator:: LaChance, Michele Collette
Abstract:: The ability of mercury to inhibit β - galactosidase activity from cell-free extracts of Streptococcus lactis, Escherichia colt and intestinal homogenates of hogs, female rats, and humans was studied. Mercuric acetate was added in vitro to all sources of β - galactosidase except for the rats, which were placed on...
Resource Type:: Masters Thesis
Full Text:: thesis is presented Typed by ma W. Atwood for Michele La Chance ACKNOWLEDGMENTS The author expresses

Terminal methylation reactions in Saccharomyces cerevisiae

Creator:: Botsford, James Lawrence
Abstract:: A cell-free system for assessing the role of S-adenosyl-methionine in the methylation of homocysteine deriving the methyl group from serine has been developed. No role for S-adenosyl-methionine could be shown in the in vitro reaction The enzyme serine transhydroxymethylase has been studied in crude and partially purified cell extracts. Evidence...
Resource Type:: Dissertation
Full Text:: SACCHAROMYCES CERE VISIAE Abstract approved: Redacted for privacy ï Dr. Leo W. Parks A cell -free

Bioinformatics applied to freshwater cyanobacterial blooms and cyanophage

Creator:: Schwartz, Andrew D.
Abstract:: Freshwater cyanobacterial blooms are a nuisance and health threat in the Pacific Northwest. The accepted methods of characterizing these blooms by microscopic cell counts cannot differentiate between toxic and non-toxic strains of the cyanobacterium Microcystis. Also, there is limited understanding of freshwater cyanophage that may control bloom dynamics. In order...
Resource Type:: Masters Thesis
Full Text:: : BIOINFORMATICS APPLIED TO FRESHWATER CYANOBACTERIAL BLOOMS AND CYANOPHAGE! Abstract approved: Theo W

Studies on roles of lactic acid bacteria and yeast in the flavor of bakery products

Creator:: Yamada, Masahiko
Abstract:: Roles of lactic acid bacteria in flour pre-ferment and white bread were investigated. Volatile compounds produced by the organisms were identified using gas-liquid chromatography (GLC). Lactic acid bacteria were isolated from domestic commercial compressed yeast and active dry yeast. Numbers per gram of sample were 10⁸ to 10⁹ in compressed...
Resource Type:: Masters Thesis
Full Text:: and Yeast in the Flavor of Bakery Products. Abstract approved: Redacted for Privacy W. E. Sandine

The lipids of spore types B, E, and F and vegetative cell types E and F of Clostridium botulinum

Creator:: Kimble, Charles E.
Abstract:: The primary purpose of this investigation was to characterize the lipids of the spores and vegetative cells of Cl. botulinum. A second purpose was to explore the possibility that lipids might serve as a means of differentiating the chiefly proteolytic Cl. botulinum type B from the nonproteolytic Cl. botulinum types...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: (Signature) A. W. Anderson The primary purpose of this investigation was to

Studies on the inhibition of spoilage organisms in Cottage cheese by lactic streptococcus organisms

Creator:: Hauser, Bruce Allen
Abstract:: A report in the literature suggesting that the use of cottage cheese dressing cultured with S. diacetilactis would afford enhanced flavor and shelf life in the finished product prompted this study to examine reasons for its effectiveness. The method used involved addition of a culture of S. diacetilactis 18-16 to...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy Abstract approved Dr. W. E. Sandine A report in the literature suggesting that

Factors that influence sulfide production in an estuarine environment

Creator:: Peterson, Paul Edward
Abstract:: Core samples from five sites in the Yaquina and Coos Estuary were assayed for vertical distribution of total sulfides, percent volatile solids, redox potential, particle size, total aerobic and sulfate reducing bacteria. Higher total sulfide levels were found at sites having more than four percent volatile solids, redox potential below...
Resource Type:: Masters Thesis
Full Text:: PRODUCTION IN AN ESTUARINE ENVIRONM NT Abstract approved: Dr. thur W. Anderson Core samples from five

Control of macromolecular synthesis in Saccharomyces cerevisiae

Creator:: Wehr, Carl Timothy
Abstract:: Synthesis of total RNA, DNA, and protein was followed in a haploid yeast auxotroph during starvation for required amino acids and uracil, and during shift-up and shift-down conditions. During amino acid starvation, synthesis of macromolecular constituents was not immediately affected, reflecting the presence of large intracellular amino acid pools. Under...
Resource Type:: Dissertation
Full Text:: : Dr. Leo W. Parks Synthesis of total RNA, DNA, and protein was followed in a haploid yeast auxotroph

Cell division and DNA synthesis in Saccharomyces cerevisiae following nutritional shiftup

Creator:: Jacobson, Gunnard Kenneth
Abstract:: Nutritional shift-up experiments have revealed many important macromolecular interactions in bacteria. It has been shown that RNA synthesis can be dissociated from protein and DNA synthesis. The rates of protein synthesis were found to be, at a given temperature, strictly dependent on the numbers of mature ribosomes present. DNA synthesis...
Resource Type:: Dissertation
Full Text:: Redacted for privacy Abstract approved: (. L. W. Parks Nutritional shift-up experiments have revealed

Two new roles for the TYMV tRNA-like structure : translation enhancement and repression of minus strand synthesis

Creator:: Matsuda, Daiki
Abstract:: Some positive-strand RNA plant viruses possess a transfer RNA-like structure (TLS) at the 3'-terminus of their genomic RNAs. The closest mimicry to tRNA is exhibited by the valylatable TLSs from tymoviruses and furo-like viruses, which are able to interact with key cellular tRNA enzymes: [CTP, ATP]:tRNA nucleotidyltransferase (CCA NTase), valyl-tRNA...
Resource Type:: Dissertation
Full Text:: 3. W-W. Chiu assisted with data collection in Chapter 3. Dr. P. Dunoyer assisted with data

Characterization of an inhibitor ("6S") of infectious pancreatic necrosis virus (IPNV) in normal rainbow trout serum (RTS) and its effects on the virus

Creator:: Park, Kyoung Chul
Abstract:: The characteristics of an inhibitor of infectious pancreatic necrosis virus (IPNV) found in normal rainbow trout serum (RTS) were studied. The serum inhibitor had a molecular weight of approximately 150 kDa and was dependent on divalent cations, either Ca²⁺ or Mg²⁺. It was stable at temperatures up to 50°C and...
Resource Type:: Dissertation
Full Text:: Redacted for Privacy Redacted for Privacy ACKNOWLEDGMENTS: I thank Dr. Paul W. Reno, my mentor, for

Properties and derivatives of 5-hydroxyuridine, a component of ribonucleic acid

Creator:: Hayes, Sidney Joseph, III
Resource Type:: Dissertation
Full Text:: . Adam W. Lis 0 0 0 0 0 0 0 0 0 0 0 0 0 This investigation involved a physico-chemical character

Chitinase production of Arthrobacter sp. BN2

Creator:: Miranda-Chavez, Alcibiades Heli
Abstract:: A chitinase producing bacterium was isolated from soil and identified as a species of Arthrobacter. The organism grew well at temperatures between 27 and 33.5 C, and the chitinase production was highest at 25.5 C. As the temperature increased above the optimum point, the level of enzyme production rapidly decreased,...
Resource Type:: Masters Thesis
Full Text:: : Redacted for Privacy A. W. Anderson A chitinase producing bacterium was isolated from soil and identi

Pathogenic and molecular characterization of three closely related isolates of infectious pancreatic necrosis virus (IPNV)

Creator:: Bruslind, Linda D.
Abstract:: Three closely related isolates belonging to the A₁ serotype of infectious pancreatic necrosis virus (IPNV) were selected for comparison, to provide insight into the nature of variation in the virulence of IPN viruses. Brook trout fry (Salvelinus fontinalis) were experimentally infected with the three isolates by immersion. Cumulative mortalities over...
Resource Type:: Dissertation
Full Text:: Necrosis Virus (IPNV). Abstract approved: Paul W. Reno Three closely related isolates belonging to the Al

Studies on glucose isomerase from Streptomyces flavogriseus

Creator:: Chen, Wen-Pin
Resource Type:: Dissertation
Full Text:: FROM STREPTOMYCES FLAVOGRISEUS Redacted for privacy Abstract approved: Dr. Arthur W. Anderson

Significance of pigments in radiation resistance of Micrococcus radiodurans

Creator:: Krabbenhoft, Kenneth Louis
Abstract:: An ecological study of a microorganism similar to that isolated in 1956 and designated as Micrococcus radiodurans indicated that the organism could be isolated from several different environments. By taking advantage of its radio-resistivity, high levels of gamma radiation were used in the isolation procedures to inactivate most of the...
Resource Type:: Dissertation
Full Text:: The author wishes to express his appreciation to Dr. Arthur W. Anderson for his guidance and

Effects of physiological state upon nitrosoguanidine-mediated allelic recombination in Saccharomyces cerevisiae

Creator:: Buettner, Michael John
Abstract:: Saccharomyces cerevisiae strain XS-380, a. heteroallelic diploid strain, carries six genetically analyzed loci on the left arm of chromosome VII. Nitrosoguanidine (NMG) at low concentrations was observed to cause allelic recombination (either mitotic recombination or gene conversion) of the heteroallelic loci with low lethality. The NMG-inducible heteroallelic system was used...
Resource Type:: Dissertation
Full Text:: SACCHAROMYCES CEREVISIAE Redacted for Privacy Abstract approved: L. W. Parks Saccharomyces cerevisiae strain

Semisolid fermentation of alkaline-treated ryegrass straw for animal feed

Creator:: Yu, Pak-Lam
Resource Type:: Masters Thesis
Full Text:: Redacted for privacyAbstract approved: Arthui--W-. Anderson Annual ryegrass (Lolium multiform Lam) was

The development of Phytophthora cactorum as a model system for the study of sterol metabolism

Creator:: Gonzales, Robert A.
Abstract:: Phytophthora cactorum lacks sterol synthesis capability. Nevertheless, it exhibits vegetative growth in the total absence of sterol. Supplementation of the growth medium with sterol, however, resulted in a three-fold increase in cell yield. This increase was shown by whole cell and cell free experiments to be the consequence of altered...
Resource Type:: Dissertation
Full Text:: Privacy 7 ABSTRACT Leo W. Parks Phytophthora cactorum lacks sterol synthesis capability. Neverthe

Studies on the lipid and fatty acid composition of Micrococcus radiodurans

Creator:: Lewis, Norman Francis
Abstract:: Comparatively little work has been done on bacterial lipids. There are profound differences between bacterial lipids in general and lipids of the higher forms of life in such respects as the absence of sterols, phospholipids low in nitrogen but high in inositol and carbohydrate, the presence of large proportions of...
Resource Type:: Masters Thesis
Full Text:: deeply indebted to my major Professor, Dr. A. W. Anderson, for his excellent supervision, continuous

A study of the fatty acids and lipids of Clostridium botulinum type B

Creator:: Paterno, Visitacion Asi
Abstract:: The difficulties encountered in working with micro-quantities of lipids have been overcome by the advent of new and improved procedures in chromatography which have made possible better fractionation and identification. Bacterial lipids because of their different lipid pattern from other life forms have stimulated much interest. Studies have been made...
Resource Type:: Masters Thesis
Full Text:: ACIDS AND LIPIDS OF CLOSTRIDIU1v,1BOT LINUM B Redacted for Privacy Abstract approved: Dr. Arthur W

The inhibitory effect of Streptococcus diacetilactis on the growth of Staphylococcus aureus in milk and vanilla cream filling

Creator:: Radich, Ruth Elaine
Abstract:: Trypticase-Soy Broth (TSB) was inoculated with Streptococcus diacetilactis, incubated at 21C for 24 hours and centrifuged to remove the cells. When the spent TSB was inoculated with Staphylococcus aureus, it allowed 99.8% less growth than fresh TSB. If the spent TSB were supplemented with 0.08 μg/ml of niacinamide, this inhibition...
Resource Type:: Masters Thesis
Full Text:: CREAM FILLING Abstract approved: Redacted for Privacy W. E. SandiVS'1 Trypticase-Soy Broth (TSB) was

An ecological study of the lactic streptococci

Creator:: Radich, Paul Christian
Abstract:: In an attempt to determine the natural habitat of Streptococcus lactis, Streptococcus cremoris, and Streptococcus diacetilactis 27 different species of vegetables, 18 species of fruits and many individual cow raw milk samples were examined. S. lactis was found to occur on potatoes, corn, cucumbers, peas, beans, and cantaloupe. In each...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: W. E. Sandine In an attempt to determine the natural habitat of Streptococcus

Molecular characterization of crustacean parasite Nadelspora canceri

Creator:: Amogan, Harold
Abstract:: Investigations into the phylogeny, genome size, and karyotype of microsporidian Nadeispora canceri were initiated to further characterize the organism. Isolates of N. canceri spores were obtained from both Dungeness (Cancer magisrer) and red rock crabs (Cancer productus). Analysis of the ssu rDNA sequence from spore isolates of the two crab...
Resource Type:: Masters Thesis
Full Text:: Crustacean Parasite Nadeispora canceri. Abstract approved: Paul W. Reno Investigations into the phylogeny

Coordinated regulation of plasma membrane lipids in Saccharomyces cerevisiae

Creator:: Low, Christopher S. F.
Abstract:: Plasma membranes isolated from a yeast sterol auxotroph (RD5-R) grown on 1,5, and 15 pg m1⁻¹ exogenous concentrations of sterol showed no discontinuity in plots of steady-state fluorescence anisotropy. Liposomes constructed from phospholipid and sterol extracted from RD5-R grown on different sterols indicated exogenously supplied sterol modulated cellular phospholipids such...
Resource Type:: Dissertation
Full Text:: Lipids In Saccharomyces cerevisiae Abstract approved: Redacted for privacy Leo W. Parks Plasma

Comparative Genomics of Freshwater Bloom-Forming Cyanobacteria and Associated Organisms

Creator:: Driscoll, Connor B.
Abstract:: The advent of improved DNA sequencing technologies has allowed the analysis of various microbial communities. Bloom-forming freshwater cyanobacteria can produce toxins and taste-and-odor compounds that can negatively affect drinking water supplies. Here, I have employed second- and third-generation sequencing technologies to characterize bloom-forming freshwater cyanobacterial genomes and their associated heterotrophic...
Resource Type:: Dissertation
Full Text:: Genomics of Freshwater Bloom-Forming Cyanobacteria and Associated Organisms Abstract approved: Theo W

Preparation, evaluation, and use of lyophilized, concentrated dairy starter cultures in cheese and yogurt manufacture

Creator:: Speckman, Calvin Albert
Abstract:: Cultures of Streptococcus lactis and Streptococcus cremoris were grown in sterile 11% nonfat milk (NFM) at 32 C for 17 hr with the pH maintained at 6. 3 with sodium carbonate. The cells were harvested and resuspended in a medium of 5% gelatin, 5% sodium citrate, 2% monosodium glutamate and...
Resource Type:: Dissertation
Full Text:: DAIRY STARTER CULTURES IN CHEESE AND YOGURT MANUFACTURE Abstract approved: Redacted for Privacy Dr. W

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