Index Catalog // ScholarsArchive@OSU

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

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

The role of ethylene in ectomycorrhiza formation and Fusarium infection of Douglas fir roots

Creator:: Graham, James Herbert
Abstract:: The ectomycorrhizal fungi Cenococcum geophilum, Hebeloma crustuliniforme and Laccaria laccata produced ethylene in vitro in modified Melin-Norkrans liquid medium only if amended with 2.5 to 10 mM methionine; Pisolithus tinctorius failed to produce ethylene unless the cultures were renewed with fresh methionine-amended medium prior to ethylene assay. An additional 19...
Resource Type:: Dissertation
Full Text:: Fusarium Infection of Douglas-Fir Roots AN ABSTRACT OF THE THESIS OF James Herbert Graham, Jr. for the

The identification and quantification of Pyrenochaeta terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots

Creator:: Flota, James Ernest
Resource Type:: Masters Thesis
Full Text:: THESIS OF James Ernest Flota for the degree of Master of Science in Botany and Plant Pathology

Factors affecting germination of endomycorrhizal spores

Creator:: Daniels, Barbara Ann
Abstract:: Four isolates of Glomus mosseae, collected from diverse geographic locations, were pot cultured on varied host plants or stored in the same soil as collected. Spores of three isolates failed to germinate on any of five agar media while the fourth germinated well on all media. Lack of germination on...
Resource Type:: Dissertation
Full Text:: privacy Jame 41,/ 1'4r appe Abstract approved: \-4 Four isolates of Glomus mosseae, collected from

Potato virus X : detection and inter-relationship with Verticillium dahliae and Colletotrichum atramentarium

Creator:: Goodell, Jody Jellison
Abstract:: Preliminary studies were run to determine the sensitivity and reliability of enzyme-linked immunosorbent assay (ELISA) for the detection of potato virus X (PVX). ELISA was found to be capable of detecting PVX in tobacco at a 1:3333 sample dilution. The reliability of ELISA for the detection of PVX in potato...
Resource Type:: Masters Thesis
Full Text:: of Verticillium dahliae. Presence of PVX is correlated with increased severity of V. dahliae

Preliminary biochemical evidence for an ascospore coat protein in Saccharomyces cerevisiae : partial characterization and timing of synthesis

Creator:: Honda, Sandra
Abstract:: Sporulation in the yeast Saccharomyces cerevisiae involves the process of meiosis which is accompanied by ascospore formation. Using intact cells or spores, preliminary biochemical evidence is given to identify ascospore wall components not found in vegetative cell walls. Cell surface components are solubilized by treatment with 8 M urea and...
Resource Type:: Masters Thesis
Full Text:: formation of the prospore or forespore wall are observed. Maturation of the ascospore occurs in stage V

Development and control of benomyl-tolerant Botrytis cinerea strains on snap beans (Phaseolus vulgaris)

Creator:: Johnson, Earl Ray
Abstract:: Benomyl-tolerant Botrytis cinerea was found in snap bean fields throughout the Willamette Valley while no tolerant isolates of Whetzelinia sclerotiorum were detected. Thirty-five benomyl-tolerant isolates of B. cinerea had slower radial growth rates than eighteen benomyl-sensitive isolates. Sporulation of an aggressive tolerant isolate was not stimulated when grown on benomyl-treated...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS I wish to express my gratitude to Dr. James C. Zalewski, major professor, for his advice, help

Vegetation and fire history of a Ponderosa pine-white fir forest in Crater Lake National Park

Creator:: McNeil, Robert Curlan
Resource Type:: Masters Thesis
Full Text:: of the study r 19 0 Crater Peak LM '265 V - 55O3 Makiaks S'r'J Ma BM 5508\ - Z2 \7a11s

Quantitative epidemiology of stripe rust (Puccinia striiformis West.) in wheat cultivars (Triticum aestivum Vill.) with general resistance

Creator:: Young, Stanford Adams
Resource Type:: Dissertation
Full Text:: Production 82 V Adaption of Stripe Rust Isolates to Wheat Cultivars 84 VI Aggressiveness of Stripe Rust

ScholarsArchive@OSU

The genus Leucogaster (Basidiomycetes, Leucogastraceae)

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

The role of ethylene in ectomycorrhiza formation and Fusarium infection of Douglas fir roots

The identification and quantification of Pyrenochaeta terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots

Factors affecting germination of endomycorrhizal spores

Potato virus X : detection and inter-relationship with Verticillium dahliae and Colletotrichum atramentarium

Preliminary biochemical evidence for an ascospore coat protein in Saccharomyces cerevisiae : partial characterization and timing of synthesis

Development and control of benomyl-tolerant Botrytis cinerea strains on snap beans (Phaseolus vulgaris)

Vegetation and fire history of a Ponderosa pine-white fir forest in Crater Lake National Park

Quantitative epidemiology of stripe rust (Puccinia striiformis West.) in wheat cultivars (Triticum aestivum Vill.) with general resistance

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