Index Catalog // ScholarsArchive@OSU

Phylogenetics, population genetics, molecular epidemiology, and pathogenicity of the Douglas-fir Swiss needle cast pathogen Phaeocryptopus gaeumannii

Creator:: Winton, Loretta M.
Abstract:: A hierarchical series of studies, based mainly on molecular data, was conducted to elucidate the life history of the Douglas-fir Swiss needle cast pathogen Phaeocryptopus gaeumannii at macro- and micro-evolutionary scales. This information was then utilized to design and evaluate molecular diagnostic tools for use in studies on the epidemiology...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Loretta M. Winton for the

Development and Application of Tools for Genetic Analysis of Clonal Populations

Creator:: Kamvar, Zhian N.
Abstract:: Research on the population genetics of microbial organisms requires the use of specialized analyses designed for clonal organisms to avoid violating the assumptions of traditional population genetic models. The tools necessary for performing these analyses existed as a set of unrelated software with non-overlapping capabilities and did not cover all...
Resource Type:: Dissertation
Full Text:: , written in the R statistical language, available on all computing platforms. This package is designed for

Patterns of ectomycorrhizal host-fungus specificity in the Pacific Northwest

Creator:: Molina, R.
Abstract:: Results from approximately 400 fungus-host pure culture inoculations indicate that specificity of ectomycorrhizal associations is a complex phenomenon and cannot be based solely on field observations of sporocarp-host associations. Of the numerous sporocarp-host specific fungi tested, most formed ectomycorrhizae with one or more unexpected, non-associated hosts. These results conclusively demonstrate...
Resource Type:: Dissertation
Full Text:: HOST-FUNGUS SPECIFICITY IN THE PACIFIC NORTHWEST Redacted for Privacy Abstract approved: Dr. James M

Cytotaxonomic studies in the Artemisia ludoviciana polyploid complex of the Pacific Northwest

Creator:: Estes, James R.
Abstract:: The Artemisia ludoviciana polyploid complex is a highly polymorphic assembledge of eight taxa in the Pacific Northwest, with a chromosome base number of x=9. A cytogenetic analysis of this complex was carried out to determine the sources of its variation, the types of polyploidy present, and the genetic processes active...
Resource Type:: Dissertation
Full Text:: Polyploid Complex of the Pacific Northwest AN ABSTRACT OF THE THESIS OF James Russell Estes for the

Morphology, ultrastructure and mating of sporidia of a wheat-bunt fungus, Tilletia caries (DC.) Tul.

Creator:: Kollmorgen, James Frederick
Abstract:: The teliospore of Tilletia caries germinates to produce a promycelium with a whorl of primary sporidia at its tip. The time between emergence of the promycelium and the development of primary sporidia averaged 2.3 h. Fusion between compatible sporidia occurred within an additional 3.8 h. Primary sporidia appeared to be...
Resource Type:: Dissertation
Full Text:: wheat-bunt fungus, Tilletia caries (DC.) Tul. AN ABSTRACT OF THE THESIS OF James Frederick

Potential susceptibility of tanoak associated and rare ericaceous plant species of southwestern Oregon to Phytophthora ramorum

Creator:: Zanzot, James W.
Abstract:: The sudden oak death pathogen, Phytophthora ramorum, is present in southwestern Oregon, and while an eradication effort is underway, the potential impact of the polyphagous pathogen on surrounding vegetation is unknown. Plant communities in the area are substantially different from those affected in California, although tanoak (Lithocarpus densiflorus), evergreen huckleberry...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF James W. Zanzot for the degree of

Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California

Creator:: Parke, Jennifer Lee
Resource Type:: Dissertation
Full Text:: thank Dr. James M. Trappe for the opportunity to study the ecology of native mycorrhizal fungi, and Mr

Taxonomy of desert truffles : the genera Phaeangium and Tirmania

Creator:: Alsheikh, Abdulmagid M.
Abstract:: Mycorrhizal fungi are important in food production of arid lands. The desert truffles not only form a symbiotic association with range plants but also form fruiting bodies which are both prized as food and nutritious. The taxonomy and ecology of two genera of desert truffles are treated in this thesis....
Resource Type:: Masters Thesis
Full Text:: Phaeangium and Tirmania Abstract approved: Redacted for Privacy 1 Dr. James M. Trappe Mycorrhizal fungi

The genus Leucogaster (Basidiomycetes, Leucogastraceae)

Creator:: Fogel, Robert Dale
Abstract:: Three provisional species are described as new: Leucogaster couchii, L. gelatinosus, and L. microsporus. Leucophlebs candida is transferred to Leucogastef, completing the transfer of all Leucophlebs species to Leucogaster. L. columellatus is transferred to Sclerogaster. L. longisterigmatus is synonymized with L. rubescens, L. foveolatus with L. odoratus, and L. fulvimaculatus...
Resource Type:: Dissertation
Full Text:: thanks is extended to Dr. James M. Trappe for his infinIte patience, understanding, and guidance during

The mycorrhizal associations of western hemlock

Creator:: Kropp, Bradley Ray
Abstract:: Two objectives of this research were to identify fungi which are mycorrhizal with western hemlock and to examine the ecology of hemlock mycorrhizal fungi indigenous to outplanting sites. Another objective was to evaluate the effectiveness of mycorrhizal inoculation in improving the performance of outplanted hemlock seedlings. A list of over...
Resource Type:: Dissertation
Full Text:: approved: Dr. James M. Trappe Two objectives of this research were to identify fungi which are

ScholarsArchive@OSU

Phylogenetics, population genetics, molecular epidemiology, and pathogenicity of the Douglas-fir Swiss needle cast pathogen Phaeocryptopus gaeumannii

Development and Application of Tools for Genetic Analysis of Clonal Populations

Patterns of ectomycorrhizal host-fungus specificity in the Pacific Northwest

Cytotaxonomic studies in the Artemisia ludoviciana polyploid complex of the Pacific Northwest

Morphology, ultrastructure and mating of sporidia of a wheat-bunt fungus, Tilletia caries (DC.) Tul.

Potential susceptibility of tanoak associated and rare ericaceous plant species of southwestern Oregon to Phytophthora ramorum

Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California

Taxonomy of desert truffles : the genera Phaeangium and Tirmania

The genus Leucogaster (Basidiomycetes, Leucogastraceae)

The mycorrhizal associations of western hemlock

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