Index Catalog // ScholarsArchive@OSU

Canopy epiphyte studies in the central Oregon Cascades : implications for the management of Douglas-fir forests

Creator:: Sillett, Stephen Charles
Abstract:: This thesis includes four separate studies. The first two studies assessed edge effects in a 700-year-old forest. After 20 years of exposure, epiphyte assemblages on the clearcut edge were similar to those of the forest interior, but there were some differences in vertical distribution patterns. Several species restricted to the...
Resource Type:: Dissertation
Full Text:: : implications for the management of Douglas-fir forests AN ABSTRACT OF THE THESIS OF Stephen Charles Si

Taxomony and mycorrhizal ecology of the desert truffles in the genus Terfezia

Creator:: Alsheikh, Abdulmagid M.
Abstract:: Mycorrhizal fungi in arid and semiarid rangelands have received little study in southwest Asia and north Africa, although they are important in food production and rangeland productivity. The desert truffles of the genera Terfezia and Tirmania form fruiting-bodies and mycorrhizae with rangeland plants. This thesis treats the taxonomy and the...
Resource Type:: Dissertation
Full Text:: reduced in picture. Reproduced from R. Heim (1934), Anna les de Cryptogamie Exotique, vol. 7. 92

Examination of the role host-selective toxins play in fungal-plant interactions

Creator:: Andrie, Rachael M.
Abstract:: Pyrenophora tritici-repentis, causal agent of tan spot of wheat, produces multiple host-selective toxins (HSTs), including Ptr ToxA, encoded for by ToxA, Ptr ToxB, encoded for by ToxB, and Ptr ToxC. Variable distribution of these three HSTs among different isolates of P. tritici-repentis, both singularly and in all possible combinations, defines...
Resource Type:: Dissertation

Infection of stressed ponderosa pines by Armillariella mellea from indigenous and artificial inoculum sources

Creator:: Fuller, Lloyd Randolph
Abstract:: Armillariella mellea (Vahl. ex Fr. ) Karst. was grown aseptically in hazel stems (Corylus cornuta var. californica) which were used in the forest to infect 290 ponderosa pines (Pinus ponderosa Laws.) which had been "stressed" in five different manners plus two control groups. All trees were inoculated twice giving a...
Resource Type:: Dissertation

Systematics, phylogeny, and biogeography of the hysterangiales and related taxa (Phallomycetidae, Homobasidiomycetes)

Creator:: Hosaka, Kentaro
Abstract:: Monophyly of the gomphoid-phalloid clade was confirmed based on multigene phylogenetic analyses. Four major subclades (Hysterangiales, Geastrales, Gomphales and Phallales) were also demonstrated to be monophyletic. The interrelationships among the subclades were, however, not resolved, and alternative topologies could not be rejected statistically. Nonetheless, most analyses showed that the Hysterangiales...
Resource Type:: Dissertation
Full Text:: , Efren Cázares, Jane Smith, Nancy Weber, Doni McKay, Bruce Caidwell, Charles Lefevre, David Pilz, Matt

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:: Restoration.” Annual Review of Ecology, Evolution, and Systematics 34 (1): 183–211. Darwin, Charles

Systematics and phylogeny of Cordyceps and the Clavicipitaceae with emphasis on the evolution of host affiliation

Creator:: Sung, Gi-Ho
Abstract:: Cordyceps is a genus of perithecial ascomycetes. It includes over 400 species that are pathogens of arthropods and parasites of the truffle genus Elaphomyces. Based on the morphology of cylindrical asci, thickened ascus apices and filiform ascospores, it is classified in the Clavicipitaceae (Hypocreales), which also includes endophytes and epiphytes...
Resource Type:: Dissertation

Factors influencing the development of onion pink root disease incited by Pyrenochaeta terrestris (Hansen) Gorenz, Walker, Larson

Creator:: Pack, Paul Eugene
Abstract:: A study was conducted of the influence of various climatic and soil factors on the development of onion pink root disease and of the influences of temperature, light, pH, carbon and nitrogen sources, and vitamins on the growth in vitro of an Oregon isolate of the pink root fungus, Pyrenochaeta...
Resource Type:: Masters Thesis
Full Text:: by Susan Carroll August 31, 1965 ACKNOWLEDGMENT The author is grateful to Dr. Edward K

Population characteristics of exotic plants in a Willamette Valley native prairie

Creator:: Lantz, Lisa E.
Resource Type:: Masters Thesis
Full Text:: establish and spread aggressively. When Charles Darwin visited South America in 1833, he noted that the

The growth of wild-type and genetically-marked strains of Tilletia caries and T. controversa in susceptible and resistant wheat cultivars

Creator:: Trail, Frances
Abstract:: The objective of this study was to provide basic information on the interaction of the bunt fungi Tilletia caries and T. controversa with their host, Triticum aestivum. Studies on the ability of haploid strains to colonize wheat heads provided the basis for experiments in which haploid strains were crossed in...
Resource Type:: Masters Thesis
Full Text:: Dr. Metzger, Dr. Phinney, Dr. Quatrano, Dr. Rickson, and Dr. Welty, A special thanks to Dr. Charles

ScholarsArchive@OSU

Canopy epiphyte studies in the central Oregon Cascades : implications for the management of Douglas-fir forests

Taxomony and mycorrhizal ecology of the desert truffles in the genus Terfezia

Examination of the role host-selective toxins play in fungal-plant interactions

Infection of stressed ponderosa pines by Armillariella mellea from indigenous and artificial inoculum sources

Systematics, phylogeny, and biogeography of the hysterangiales and related taxa (Phallomycetidae, Homobasidiomycetes)

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

Systematics and phylogeny of Cordyceps and the Clavicipitaceae with emphasis on the evolution of host affiliation

Factors influencing the development of onion pink root disease incited by Pyrenochaeta terrestris (Hansen) Gorenz, Walker, Larson

Population characteristics of exotic plants in a Willamette Valley native prairie

The growth of wild-type and genetically-marked strains of Tilletia caries and T. controversa in susceptible and resistant wheat cultivars

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