Index Catalog // ScholarsArchive@OSU

Enhanced Protein Homeostasis Mechanisms in Naked Mole Rats Cells

Creator:: Pride, Harrison, Coles, Alex, Mochnick, Jillian, Zhang, Yiqiang, Buffenstein, Rochelle, Hornsby, Peter J., Austad, Steve, Richardson, Arlan, and Perez, Viviana I.
Abstract:: Phylogenic studies suggest that cells from long-lived species are more resistant to a variety of stressors than short-lived species. However, there is little information on the cellular mechanisms that give rise to increased resistance to stress. Our previous studies have shown that liver proteins from a long-lived species have lower...
Resource Type:: Poster

A bacterial disease of the American shad (Alosa sapidissima)

Creator:: Rothman, Stanley
Abstract:: For the past six years a bacterial infection has been the cause of large losses of adult, spawning, American shad (Alosa sapidissima) in the Coos, Millicoma and Smith Rivers of Oregon. There was a sizable commercial fishery for shad in these rivers and losses of fish due to this infection...
Resource Type:: Masters Thesis
Full Text:: , animal infection, sero- logical tests, and determination of the mole percent guanine + cytosine showed

Metabolism of aroma bacteria as related to diacetyl production

Creator:: Brown, Ruth Elaine
Abstract:: Factors influencing diacetyl production by the aroma bacteria Leuconostoc citrovorum and Streptococcus diacetilactis were investigated. When grown in association with lactic streptococci, L. citrovorum strain 91404 decreased in cell numbers from 10⁸ to 10⁶ over two weeks of daily subculturing in sterile non-fat milk incubated at 21°C. The ability to...
Resource Type:: Masters Thesis
Full Text:: influencing diacetyl production by the aroma bacteria Leuconostoc citrovorum and Streptococcus diacetilactis

Sterol uptake in Saccharomyces cerevisiae

Creator:: Salerno, Laurel F.
Abstract:: An assay is described to measure sterol uptake in Saccharomyces cerevisiae. This assay involves specific binding of radioactively labelled sterol to actively growing yeast cells. It was found that uptake does not occur in stationary cultures and that some growth is necessary for FY3 , a sterol auxotroph, to take...
Resource Type:: Masters Thesis
Full Text:: cal/mole. In Figure 9, growth rate and sterol uptake are compared. The tight coupling of uptake to

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:: substrate and sub- tracted as background. Enzyme activity was reported as ;mole NADH oxidized per minute

Deoxyribonucleic acid hybridization and plasmid studies in the genus Lactobacillus

Creator:: Sriranganathan, Nammalwar
Abstract:: Using thermal denaturation methodology, the nucleic acid base composition of deoxyribonucleic acid (DNA) isolated from type, neotype and stock strains of Lactobacillus species was determined. The genus was found to be heterogeneous in base composition, ranging from 33.1 to 50.0 moles % guanine plus cytosine (GC). Genus members fell into...
Resource Type:: Dissertation
Full Text:: 44. 0 and 48. 0 moles %: L. plantarum, L. rhamnosus (human isolate) and L. casei var. casei. Group

Physiological, biochemical, and genetic studies on the [delta]²⁴ sterol methyltransferase of Saccharomyces cerevisiae

Creator:: McCammon, Mark Thomas
Abstract:: The role of the yeast S-adenosylmethionine: Δ²⁴-sterol-C-methyltransferase (SCMT) in sterol metabolism was investigated. Structural analogs of S-adenosylhomocysteine were tested for inhibition of the SCMT enzyme. A wide inhibitory range by these compounds was observed, indicating which structural features of the parent compound are important for binding to the enzyme. The...
Resource Type:: Dissertation
Full Text:: Physiological, biochemical, and genetic studies on the

Host range and chemical composition of lactic streptococcal bacteriophages

Creator:: Henning, David Ralph
Abstract:: Comparisons were made of the abilities of Streptococcus lactis, Streptococcus cremoris and Streptococcus diacetilactis bacteriophages to endure various laboratory isolation and storage treatments. Neutralization of Cottage cheese whey containing phages offered no survival advantage over unneutralized samples, refrigeration of neutral and acid whey samples increased the survival of only the...
Resource Type:: Dissertation
Full Text:: Host range and chemical composition of lactic

Characteristics of two salmonid fish cell lines : glycolytic rates, CO₂ requirements and susceptibility to Reovirus and Reovirus-like agents

Creator:: Kleeman, Karl Terrence
Abstract:: The research presented in this thesis is concerned with the characterization of two salmonid cell lines, CSE 119 derived from embryos of coho salmon (Oncorhynchus kisutch) and STE 137 derived from embryos of steelhead trout (Salmo gairdneri). The rates of glucose utilization and lactic acid production during the most active...
Resource Type:: Dissertation
Full Text:: REQUIREMENTS AND SUSCEP- TIBILITY TO prryvrarrq ANTI RrnATTUTTS-LTKE AGENTS Redacted for Privacy Abstract

Biological influence on red alder on Poria weirii and other root rot pathogens

Creator:: Li, Ching-Yan
Resource Type:: Dissertation
Full Text:: Biological influence on red alder on Poria weirii and

Virus resistance in transgenic plants expressing translatable and untranslatable forms of the tobacco etch virus coat protein gene sequence

Creator:: Lindbo, John A.
Resource Type:: Dissertation
Full Text:: translatable and untranslatable forms of the tobacco etch virus coat protein gene sequence AN ABSTRACT OF THE

The effects of single and multiple pathogen and parasite infections on juvenile chinook and coho salmon during early marine residency

Creator:: Sandell, Todd A.
Abstract:: Nearly 3000 juvenile Chinook (Oncorhynchus tshawytscha) and coho (O. kisutch) salmon captured in nearshore waters off the coasts of Washington and Oregon from 1999-2004 were tested for infection by Renibacterium salmoninarum, Nanophyetus salmincola, and skin metacercariae. First, three quantitative PCR primer/probe sets were compared for detection of R. salmoninarum; amplification...
Resource Type:: Dissertation
Full Text:: The Effects of Single and Multiple Pathogen and

Carbohydrate and Nitrogen Metabolism of Sphaerotilus Natans

Creator:: Robertson, James Melvin
Resource Type:: Dissertation
Full Text:: Carbohydrate and Nitrogen Metabolism of Sphaerotilus

Improved detection methods and physiological studies of staphylococcal enterotoxin

Creator:: Kimble, Charles E.
Abstract:: The purpose of this study was to develop means to facilitate the detection of staphylococcal enterotoxin and to elucidate factors that influence enterotoxin formation. It was found that semipurification flat-gel electrophoresis in a water-cooled apparatus was more efficient than CM-cellulose and Sephadex column chromatography currently used to separate toxin from...
Resource Type:: Dissertation
Full Text:: Improved detection methods and physiological studies of

Purification and properties of Streptococcus lactis β-galactosidase

Creator:: McFeters, Gordon A.
Abstract:: Experiments were carried out to purify and characterize the galactosidase of the Streptococcus lactis 7962. Purification was accomplished using standard procedures; however the lability of the enzyme to numerous treatments limited the techniques that could be used and the amount of active enzyme recovered. Gel filtration revealed that the enzyme...
Resource Type:: Dissertation
Full Text:: - 0.238 mole -1 cm-1) and dividing by cm the reaction time in minutes. This figure then was multiplied

Pathways and enzymes involved in glucose catabolism by lactic streptococci

Creator:: Nandan, Rajiva
Abstract:: The enzymes and pathways involved in the catabolism of glucose by several strains of Streptococcus diacetilactis, Streptococcus cremoris, and Streptococcus lactis, commonly called the lactic streptococci, were studied. The presence of aldolase, triosephosphate isomerase and alcohol dehydrogenase in these organisms provided evidence for the operation of the Embden-Meyerhof-Parnas (EMP) pathway...
Resource Type:: Dissertation
Full Text:: change a Go = -9.38 Kcal /mole Jackson and Morgan in 1954 (40) reported that the malty aroma produced

The distribution and influence of sterols in yeast membranes

Creator:: Bottema, Cynthia D. K.
Abstract:: Plasma membranes from Saccharomyces cerevisiae were prepared by a new procedure involving lyticase treatment of the yeast cells. The plasma membranes were right-side out, closed vesicles of uniform appearance with a sterol to phospholipid molar ratio of 0.365. The thermotropic behavior of these plasma membranes from wild-type yeast and from...
Resource Type:: Dissertation
Full Text:: The distribution and influence of sterols in yeast

Methane and carbon monoxide oxidation by nitrifying bacteria

Creator:: Jones, Ronald Dean
Resource Type:: Dissertation
Full Text:: Methane and carbon monoxide oxidation by nitrifying

In vitro regulation and cultivation of salmonid lymphocytes

Creator:: DeKoning-Loo, Jenefer
Abstract:: The foundation of the research compilation presented here began with the derivation of an improved method for obtaining optimal in vitro mitogenic responses in salmonid lymphocyte cultures by utilizing autologous or homologous plasma as the primary serum supplement. It was observed that lymphocytes which were previously unresponsive to mitogenic challenge...
Resource Type:: Dissertation
Full Text:: In vitro regulation and cultivation of salmonid

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:: 10 ¿'moles MgC12, 10 /Umoles KC1, 10/ ?doles TNH,_ cofactor, and cell - free extract which was

Cell wall chemistry, deoxyribonucleic acid base composition and pathogenesis of the kidney disease bacterium in salmonid fishes

Creator:: Sanders, James Edward
Abstract:: Experiments were designed to more precisely evaluate the effects of water temperature on the progress of bacterial kidney disease ( BKD) in three species of salmonid fishes. Infections were produced by intraperitoneal injection of suspensions of the causative organism into fish held at seven temperatures ranging from 3.9 to 20.5°C....
Resource Type:: Dissertation
Full Text:: Composition and Pathogenesis of the Kidney Disease Bacterium in Salmonid Fishes AN ABSTRACT OF THE THESIS OF

Electron transport pathways in revertible hydrogen-uptake negative mutants and parent strain of Rhizobium japonicum

Creator:: Hickok, Ruth Ellen
Resource Type:: Masters Thesis
Full Text:: excessive 0 2 (Maier et al., 1978). Up to two moles of ATP are produced per mole of H2 recycled from the

Biosynthesis of streptomyces griseus phage deoxyribonucleic acid

Creator:: Shearer, Judith Ann
Abstract:: The presented study was undertaken to determine the operational catabolic carbohydrate pathway(s) contributing to the synthesis of the DNA of the actinophage for Streptomyces griseus. The incorporation of glucose-6-¹⁴C versus glucose-1-¹⁴C was determined for the deoxyribose and purine and pyrimidine bases of the phage DNA. The specific activities of the...
Resource Type:: Masters Thesis
Full Text:: second mole of hexose phosphate to yield heptulose phosphate and triose phos- phate. c c c c

Studies on purification and characterization of an autolytic enzyme from cell walls of Bacillus subtilis

Creator:: Brown, Willie Claiborne
Abstract:: The purpose of this investigation was to purify and characterize the autolytic enzyme from cell walls of Bacillus subtilis 168. The crude enzyme was obtained by autolysis of purified cell walls in buffer at 37° C. Two purification methods were developed. The first involved fractional precipitation with ammonium sulfate. The...
Resource Type:: Dissertation
Full Text:: phosphorus was estimated by comparing the O.D. of unknown and standard samples (10, 20 and 40 mµ moles /ml

Carbohydrate metabolism in lactic streptococci with special reference to galactose

Creator:: Lee, Donald Royce
Abstract:: Phosphorylation of free galactose by lactic streptococci was mediated by an adenosine triphosphate (ATP) dependent kinase which was repressed by glucose. The phosphoenolypyruvate (PEP) phosphotransferase system (PTS) was not involved in transport of galactose, The conversion of free galactose to glucose was also demonstrated. A key Leloir pathway enzyme, uridine...
Resource Type:: Dissertation
Full Text:: studies, it was shown that glucose was the best carbohydrate for growth, and galactose the poorest, It

Transcriptome profiling of Nitrosomonas europaea grown singly and in co-culture with Nitrobacter winogradskyi

Creator:: Pérez, José
Abstract:: In most environments, ammonia (NH₃) is oxidized to nitrate (NO₃⁻) via the intermediate nitrite (NO₂⁻). This is a microbe-driven process involving phylogenetically distinct types of microorganisms, namely, ammonia-oxidizing bacteria (AOB) and Thaumarchaea (AOA), and nitrite-oxidizing bacteria (NOB). Nitrosomonas europaea and Nitrobacter winogradskyi are the best studied AOB and NOB, respectively,...
Resource Type:: Masters Thesis
Full Text:: (Laanbroek & Gerards, 1993). It is estimated that for every mole of CO2 fixed, AOB utilize 25-30 moles NH3

Purification and characterization of R. meliloti RNA polymerase from wild type and mutant strains, and the role of the enzyme in the specificity of in vitro transcription of nitrogen fixation genes

Creator:: Nielsen, Brent L.
Resource Type:: Dissertation
Full Text:: the number of moles of ATP required for reduction of one mole of N2 is estimated to be between 22 and

S-adenosylmethionine : [triangle]²⁴-sterol methyltransferase and the regulation of ergosterol biosynthesis in Saccharomyces cerevisiae

Creator:: Bailey, Richard B.
Abstract:: The inhibition of S-aden.osylmethionine: Δ²⁴-sterol methyltransferase (EC 2.1.1.41) activity by endogenous cellular components has been studied in vitro. The principal inhibitors were Na⁺ and K⁺; Cs⁺, NH₄⁺ and Li⁺ were also shown to inhibit the reaction. The inhibition by potassium cation has been studied, and we have found that energy...
Resource Type:: Dissertation
Full Text:: ) contained 3.0 ml. of 0.1 M Tris-C1, pH 7.5, 10 11 moles MgC12. 6E120, 0.8 Ilmoles of zymosterol, and 1.0

Partial purification and properties of a columnaricin isolated from the myxobacterium Chondrococcus columnaris

Creator:: Needleman, David Sol
Abstract:: Of the 14 strains of Chondrococcus columnaris examined, 4 produced antagonistic substances that inhibited the growth of other strains of this species. The antagonistic substance produced by strain 3-P63-12 was examined in greater detail. Since the inhibitory substance had an extremely narrow spectrum of activity, and was not transmissible in...
Resource Type:: Masters Thesis
Full Text:: : PARTIAL PURIFICATION AND PROPERTIES OF A COLUMNARICIN ISOLATED FROM THE MYXOBACTERIUM CHONDROCOCCUS

The cysteine to homocysteine conversion in Saccharomyces cerevisiae

Creator:: Sorsoli, Wayne Aldo
Abstract:: The mechanism of transsulfuration and the role of cystathionine in the biosynthesis of methionine in yeast were investigated. Saccharomyces were shown to accumulate cystathionine by use of the ³⁵S labeled compound. Cell-free extracts of the wildtype clone as well as methionine auxotrophs were shown to cleave cystathionine. The enzymatically produced...
Resource Type:: Dissertation
Full Text:: , 50 µ moles of DL-allo- cystathionine and approx- imately 2µc of 35S- cystathionine. Following a

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:: Thermally Induced Leakage and Viability Studies in an

Genetic mapping and physiological characterization of RNA polymerase mutants of Bacillus subtilis

Creator:: Haworth, Stephen Randall
Resource Type:: Dissertation
Full Text:: additional 5 p, moles/ml of MgSO4, and 5 p.g /ml of any other required amino acid. Nine tenths of a ml of

Enteric Redmouth Bacterium of salmonids : a biochemical and serological comparison of selected isolates

Creator:: O'Leary, Patrick John
Abstract:: A comparison of the agglutinating and precipatiating antigens of Enteric Redmouth Bacterium (ERMB) was made. There are two major and one minor agglutinating antigens which describe two serotypes (I and II). Only serotype I metabolizes sorbitol. A bacterin from serotype I cross protected against a challenge of bacteria of serotype...
Resource Type:: Masters Thesis
Full Text:: genus ranges from 45.8-46.8 moles percent as ascertained by thermal melting (Mollaret and Thal, 1974

Studies on glucose-6-phosphate dehydrogenase obtained from Vibrio marinus, an obligate marine psychrophile

Creator:: Miller, Wayne Warren
Abstract:: Four-fold partially purified glucose-6-phosphate dehydrogenase (G-6-PDH) from the obligately psychrophilic marine bacterium Vibrio marinus was effected by thermally induced leakage of the enzyme, ammonium sulfate fractionation and column chromatography on Sephadex G-200 gel. The effects of temperature, pressure, salinity, and pH were determined for the various degrees of enzyme purity....
Resource Type:: Masters Thesis
Full Text:: 520 moles Tris -HC1, 10 µmoles G -6 -P and 2. 0 µmoles NADP. The assay was carried out at 20 C

Factors influencing the production of tyramine, histamine and tryptamine in cheese

Creator:: Edwards, Susan Thornton
Resource Type:: Masters Thesis
Full Text:: and Tryptamine in Cheese AN ABSTRACT IN THE THESIS OF Susan Thornton Edwards for the degree of

Control of acid production and β-galactosidase synthesis in lactic streptococci

Creator:: Citti, James Edward
Abstract:: The public health and economic significance of rapid acid production by lactic streptococci in controlled dairy fermentations is well known. However, the fast acid-producing characteristic of these organisms is not stable, and cultures of fast organisms have been shown to contain slow cells. These studies were carried out to characterize...
Resource Type:: Dissertation
Full Text:: Control of acid production and B-Galactosidase synthesis

The purification and characterization of the fructose 1,6-diphosphate aldolase from Vibrio marinus, an obligately psychrophilic marine bacterium

Creator:: Jones, Larry Paul
Resource Type:: Dissertation
Full Text:: at 25 C the K ism 10 -4 and V is 2404 moles FDP cleaved per minute per2.8 x 10 max mole protein. 1

An investigation of carbon and nitrogen metabolism through a genomic analysis of the genus Nitrobacter

Creator:: Starkenburg, Shawn R.
Abstract:: The chemolithoautotrophic nitrite oxidizing bacteria (NOB) participate in the biogeochemical cycling of nitrogen by catalyzing and conserving energy from the oxidation of nitrite (NO₂-) to nitrate (NO₃-) via a nitrite oxidoreductase (NXR). The main objective of this work was to comparatively annotate and analyze the genome sequences of Nitrobacter winogradskyi...
Resource Type:: Dissertation
Full Text:: presented on December 18, 2007 Title: An Investigation of Carbon and Nitrogen Metabolism through a

Development of immunological memory in rainbow trout (Oncorhynchus mykiss) and aflatoxin B₁ modulation of the response

Creator:: Arkoosh, Mary
Abstract:: Immunological memory has been shown to occur unequivocally in mammals. However, controversy exists regarding the capability of fish to elicite a memory response. This study demonstrates that memory does occur rainbow trout, Oncorhynchus rnykiss. Trout injected with a T-dependent antigen, trinitrophenylated keyhole-limpet hemocyanin, (TNP-KLH) (100 μg/fish) were able to produce...
Resource Type:: Dissertation
Full Text:: Immunological Memory in Rainbow Trout (Oncorhynchus mykiss) and Aflatoxin B 1 Modulation of the Response

Structural effects on Arthrobacter ATCC 25581 methylene hydroxylase activity

Creator:: Hayasaka, Steven Shin
Abstract:: Arthrobacter ATCC 25581, capable of subterminal oxidation of n-hexadecane to 2-, 3-, and 4- alcoholic and ketonic products, was examined for the ability of this methylene hydroxylase capability to be induced and repressed, and for structural relationships influencing methylene function oxidation. Induction was best carried out by use of n-alkanes...
Resource Type:: Masters Thesis
Full Text:: p.1 of n-hexadecane, 10 p. moles of NADH, NAD, NADPH or NADP, and 2 p. moles of FeSO4. 7H20. All

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:: change in max from 297 to 295 mµ and the change in max from 28, 500 to 30, 600 moles /cc. 4. Hauschild

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:: sterol mole- cule. Danielson and Bloch (15) observed that this methyl group could arise from a

Studies on host range, fine structure, and nucleic acids of lactic streptococcus bacteriophages

Creator:: Nyiendo, Joanne Annette
Abstract:: The most frequent cause of insufficient acid production during fermentation of dairy products is bacteriophage infection of lactic starter cultures. Previously, efforts to minimize this problem have dealt primarily with the host range relationships of the viruses and susceptibility patterns of the lactic streptococci. This study was undertaken to characterize...
Resource Type:: Dissertation
Full Text:: Studies on host range, fine structure, and nucleic acids

Guanosine tetrophosphate accumulation in Rhizobium meliloti

Creator:: Saedi, Mohammad Saeed
Abstract:: The effect of carbon source, nitrogen source, and amino acid starvation on the accumulation of guanosine tetraphosphate.and RNAand protein synthesis in Rhizobium meliloti are described in this report. An accumulation of ppGpp and a decrease in the rate of RNA and protein synthesis were observed in response to nitrogen source...
Resource Type:: Masters Thesis
Full Text:: synthesis was inhibited (Figure 4A) and low levels of ppGpp accumulated (30 pico moles/O.D.) (Table II

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

Creator:: Hayes, Sidney Joseph, III
Resource Type:: Dissertation
Full Text:: -hydroxyuridine diphosphate glucose serve as subArates for the dehydrogenase and utilize 2 moles of NAD per mole

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

Creator:: Teo, Alex Yeow-Lim
Resource Type:: Masters Thesis
Full Text:: propionate, acetate and carbon dioxide. Typically, 3 moles of lactate result in the production of a 2:1:1

Survey of Parasites In Threatened Stocks of Coho Salmon (Oncorhynchus kisutch) In Oregon By Examination of Wet Tissues and Histology

Creator:: Ferguson, Jayde A., St-Hilaire, Sophie, Peterson, Tracy S., Rodnick, Kenneth J., and Kent, Michael L.
Abstract:: We are conducting studies on the impacts of parasites on Oregon coastal coho salmon (Oncorhynchus kistuch). An essential first step is documenting the geographic distribution of infections, which may be accomplished by using different methods for parasite detection. Thus, the objectives of the current study were to (1) identify parasite...
Resource Type:: Article
Full Text:: (1992), McDonald and Margolis (1995), Gibson (1996), Hoffman (1999), and Moles (2007). Diagnostic

Physiological studies on Bdellovibrio bacteriovorus 109D

Creator:: Dunn, Joseph Edward
Resource Type:: Dissertation
Full Text:: - organotrophic; (g) endowed with DNA which is highly homogeneous and contains 42-51 moles per- cent G+C; (h

Microbial ecology of an old-growth Douglas fir canopy

Creator:: Caldwell, Bruce A.
Abstract:: Microbial populations associated with the major substrates of the canopy of a 70 m old-growth Douglas fir were studied to determine potential activities. Seasonal samples from bark, foliage, epiphytic moss, lichens, and litter accumulations were collected to i) obtain population data, ii) to isolate the major groups of microorganisms present,...
Resource Type:: Masters Thesis
Full Text:: from bark, foliage, epiphytic moss, lichens, and litter accumulations were collected to i) obtain

Some factors influencing carbon dioxide production by Leuconostoc citrovorum

Creator:: Holmes, Beverly Ann
Abstract:: This study was undertaken to determine the role Leuconostoc citrovorum may play in carbon dioxide production in milk. The ability of L. citrovorum strains to produce gas was studied by two methods. A qualitative method used visual measurement of gas where an agar plug was forced up the neck of...
Resource Type:: Masters Thesis
Full Text:: by Betacoccus cremoris. These authors found that 1.0 mole of citric acid yielded 2. 0 moles carbon

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