Index Catalog // ScholarsArchive@OSU

Detection of the Burkholderia cepacia complex in soil environments

Creator:: Miller, Suzanne C. McKenzie
Abstract:: Burkholderia cepacia complex (Bcc) bacteria reside in soil, plant rhizospheres, and water, but the prevalence of Bcc in outdoor environments is not clear. In this study, we sampled a variety of soil and rhizosphere environments with which people may have contact: playgrounds, athletic fields, parks, hiking trails, residential yards and...
Resource Type:: Masters Thesis
Full Text:: Burkholderia cepacia complex (Bcc) bacteria reside in soil, plant rhizospheres, and water, but the prevalence

Microbial changes and interactions in the rhizosphere of vesicular-arbuscular mycorrhizal plants

Creator:: Meyer, Julie (Julie Rae)
Abstract:: The influence of vesicular-arbuscular mycorrhizae (VAM) on populations of general taxonomic and functional groups of naturally-occurring rhizosphere bacteria and actinomycetes associated with roots of sweet corn (Zea mays var. rugosa) and subterranean clover (Trifolium subterraneum L.) was assayed using selective media. Sporangial production by Phytophthora cinnamomi was also used as...
Resource Type:: Masters Thesis
Full Text:: of Science in Botany and Plant Pathology presented on September 25, 1984 . Title: Microbial Changes

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Creator:: Esterson, Andrew
Abstract:: Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Botany and Plant Pathology presented on May 27, 2016. Title: The Role

The role of rhizosphere bacteria in the growth of tall fescue

Creator:: Gawel, Len Joseph
Resource Type:: Masters Thesis
Full Text:: The concept that plant roots are in contact not merely with physico-chemlcal environment but with

Microbial analysis of coniferous forest and nursery soils : effects of ectomycorrhizae, volatiles, and humic-rich organic substrates

Creator:: Schisler, David Albert
Abstract:: Fusarium spp. frequent conifer nursery soils yet are rarely recovered from coniferous forest soils. Experiments were performed to determine what influence humic-rich organic amendments and volatiles from soil, ectomycorrhizal fungi and ectomycorrhizae have on the populations of several physiologic and taxonomic microbial groups potentially related to this phenomenon. A comparative...
Resource Type:: Dissertation
Full Text:: THESIS OF David Albert Schisler for the degree of Doctor of Philosophy in Botany and Plant Pathology

Influences of soil acidity and variety of plant on the populations of Rhizobium trifolii found in nodules of Trifolium subterraneum L.

Creator:: Dughri, Muktar H.
Abstract:: Complementary methods of strain identification were sought to delineate the composition of the population of Rhizobium trifolii found in nodules of Trifolium subterraneum L. when exposed to an Abiqua silty clay loam (Cumulic Ultic Haploxeroll) containing a resident population of R. trifolii. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDSPAGE) was...
Resource Type:: Dissertation
Full Text:: environment in which they utilize the plant photosynthate, as energy source, for their nitrogen fixing

Evaluation of effectiveness of Rhizobium trifolii strains for Trifolium subterraneum L. (subterranean clover) in southwestern Oregon soils

Creator:: Kibbey, Heather Jean
Abstract:: Twelve high effective Rhizobium trifolii strains were evaluated at four locations in southwest Oregon for the ability to effectively nodulate Mount Barker subterranean clover. All twelve strains possessed antibiotic resistance markers to facilitate identification of strains when extracted from nodules. No significant differences in plant dry weight means could be...
Resource Type:: Masters Thesis
Full Text:: differences in plant dry weight means could be observed at two of the sites, while at the re- maining two

Symbiotic and saprophytic characteristics of a soil population of Rhizobium leguminosarum bv. trifolii

Creator:: Yap, Kathryn H. M.
Abstract:: Although much has been learned about the comparative nodulating behavior of simple mixtures of rhizobial strains under non-soil situations, it is unclear how these findings relate to the factors influencing nodulation success by the complex mixtures of strains found within soil-borne rhizobial populations. Information on the structure and physiological behavior...
Resource Type:: Masters Thesis
Full Text:: cell-elongation assay only represents the second report of its use on soil microbial populations

Survival of fecal coliform bacteria in sludge-amended soils

Creator:: Hartel, Peter G.
Abstract:: A study was conducted to determine the effects or temperature, solar radiation, rainfall, and saturated flow on fecal coliform numbers in sewage sludge-amended soils. To determine this, four 4.6 X 13.7 m field plots were each amended in summer and in winter with 800 liters of anaerobically-digested sewage sludge, and...
Resource Type:: Dissertation
Full Text:: Wastewater Treatment Plant for their help; F. Collins of the City of Corvallis and C. Vernell for

Ammonia-oxidizer and denitrifier populations in boreal forest soils of differing nitrogen availability

Creator:: Burton, Marci S.
Abstract:: Nitrification and denitrification are major biological processes transforming nitrogen (N) in soils to plant available N, highly leachable nitrate (NO₃⁻) and gaseous N oxides. Although many studies in the past have studied N cycling communities, the effect of increased N inputs on ammonia-oxidizer and denitrifier population dynamics is still under...
Resource Type:: Masters Thesis
Full Text:: processes transforming nitrogen (N) in soils to plant available N, highly leachable nitrate (NO3-) and

ScholarsArchive@OSU

Detection of the Burkholderia cepacia complex in soil environments

Microbial changes and interactions in the rhizosphere of vesicular-arbuscular mycorrhizal plants

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

The role of rhizosphere bacteria in the growth of tall fescue

Microbial analysis of coniferous forest and nursery soils : effects of ectomycorrhizae, volatiles, and humic-rich organic substrates

Influences of soil acidity and variety of plant on the populations of Rhizobium trifolii found in nodules of Trifolium subterraneum L.

Evaluation of effectiveness of Rhizobium trifolii strains for Trifolium subterraneum L. (subterranean clover) in southwestern Oregon soils

Symbiotic and saprophytic characteristics of a soil population of Rhizobium leguminosarum bv. trifolii

Survival of fecal coliform bacteria in sludge-amended soils

Ammonia-oxidizer and denitrifier populations in boreal forest soils of differing nitrogen availability

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