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Studies of the fungal endophyte Acremonium coenophialum in tall fescue

Creator:: Azevedo, Mark D.
Abstract:: Tall fescue is thought to have co-evolved with the fungal endophyte Acremonium coenophialum to form a mutualistic relationship. Endophyte-infected (EI) plants can have increased growth and survival when compared with endophyte-free (EF) plants. Responses to endophyte-infection vary and are host-genotype and fungal-biotype specific. Mechanism(s) by which endophyte-infection confers increased growth...
Resource Type:: Masters Thesis

Epistemic Practices in Civil and Environmental Engineering Among Students, Faculty, and Practicing Engineers

Creator:: Babikoff, Travis J.
Abstract:: The epistemic practices that make up engineering are poorly understood and there is a lack of empirical research on this topic. Characterizing the epistemic practices of engineering students, faculty, and professionals is critical to creating effective curriculum that aids in developing student’s epistemic practices. Doing so allows us to better...
Resource Type:: Masters Thesis
Full Text:: committee: Dr. Michelle Bothwell, Dr. Mark Dolan, and Dr. Bryony DuPont

Production of SO₂ and SO₂ binding compounds by Saccharomyces cerevisiae during the alcoholic fermentation and the impact on wine lactic acid bacteria

Creator:: O'Neil, Allison L.
Abstract:: Malolactic fermentation (MLF) is important in the production of wines as it reduces acidity through the conversion of malic acid to lactic acid. However, successful MLF can be difficult to achieve due to yeast antagonism of the bacterium responsible for the secondary fermentation, Oenococcus oeni. In particular, yeast produced sulfur...
Resource Type:: Masters Thesis
Full Text:: last few years. I would like to acknowledge Dr. Mark A. Daeschel, Dr. Michael C. Qian, and Dr

Photo-identification of Melon-headed Whales (Peponocephala electra) in the Marquesas Islands : Creation of the First Photo-identification Catalog and Estimation of Group Size and Minimum Abundance in a Remote Archipelago

Creator:: McClung, John Ralph, II
Abstract:: For many species of oceanic dolphins, photo-identification and genetic data indicate that these island-associated populations are demographically isolated from pelagic populations and that island-associated populations exhibit very different patterns of movement and habitat use. Melon-headed whales (Peponocephala electra) are generally considered a pelagic dolphin, but have been documented around oceanic...
Resource Type:: Masters Thesis
Full Text:: number of quality non-DMI images collected within an encounter into the Poisson log- normal mark-resight

Distribution of Acremonium coenophialum in developing seedlings and inflorescences of Festuca arundinacea

Creator:: Cook, Kathy L.
Abstract:: Acremonium coenophialum is an endophytic fungus which infects the reproductive and vegetative tissue of tall fescue. Interest in this fungus was sparked by research which linked its presence in tall fescue with reduced weight gains and alkaloid-like poisoning in cattle. Incomplete information was available on the endophyte's life or disease...
Resource Type:: Masters Thesis
Full Text:: , my love and gratitude is offered to Janice Kimpel and, my husband, Mark Azevedo for their

Coexistence of top predators in headwater streams : pathways of intraguild predation between Pacific Giant salamander larvae and cutthroat trout

Creator:: Rundio, David E.
Abstract:: The coexistence of multiple predators may have important consequences for the structure and function of communities. Interactions between predators may strongly affect their combined direct and indirect effects on prey populations and lower trophic levels. Predators often have size-structured populations, which may result in intraguild predation characterized by complex trophic...
Resource Type:: Masters Thesis
Full Text:: ., Sih 1987, Kats et al. 1988, Azevedo-Ramos and Magnusson 1999). Antipredator defenses can be broadly

The effects of patch size and isolation on juvenile emigration in gray-tailed voles, Microtus canicaudus

Creator:: Nelson, Natasha
Resource Type:: Masters Thesis
Full Text:: Dan Edge for their role in data analysis. I thank Mark Azevedo for his prodding to continue 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:: contributing their knowledge, time and equipment in helping me during these studies: Mark Azevedo, Jeff Britt

Correlation of endophyte toxins (ergovaline and lolitrem B) with clinical disease : fescue foot and perennial ryegrass staggers

Creator:: Tor-Agbidye, John
Abstract:: Endophytic fungi (A. coenophialum and A. lolii) which infect grasses produce ergot alkaloids that serve as the grasses' chemical defenses and enhance the vigor of the grass. Turf-type tall fescue with high endophyte levels has been deliberately developed to produce a greener, more vigorous, pest-resistant turf. Consumption of endophyte-infected grass...
Resource Type:: Masters Thesis
Full Text:: information on distribution of the EV in the below-ground crowns and roots is provided (Azevedo, 1993). The

Genetic diversity and interactions in populations of plants and pathogens

Creator:: Knott, Elizabeth A.
Abstract:: Two experiments involving interactions between wheat (Triticum aesitivium L.) cultivars and rust pathogens were investigated. One experiment evaluated the aggressiveness (measured by infection efficiency and latent period) of populations of Puccinia recondita Rob. when inoculated on the cultivar they were isolated from, their "own" cultivar, and when inoculated onto other...
Resource Type:: Masters Thesis
Full Text:: pustules. To the botany for lunch bunch, the Thursday night Squirrel's gang, Mark Azevedo and Kathy Cook

ScholarsArchive@OSU

Studies of the fungal endophyte Acremonium coenophialum in tall fescue

Epistemic Practices in Civil and Environmental Engineering Among Students, Faculty, and Practicing Engineers

Production of SO₂ and SO₂ binding compounds by Saccharomyces cerevisiae during the alcoholic fermentation and the impact on wine lactic acid bacteria

Photo-identification of Melon-headed Whales (Peponocephala electra) in the Marquesas Islands : Creation of the First Photo-identification Catalog and Estimation of Group Size and Minimum Abundance in a Remote Archipelago

Distribution of Acremonium coenophialum in developing seedlings and inflorescences of Festuca arundinacea

Coexistence of top predators in headwater streams : pathways of intraguild predation between Pacific Giant salamander larvae and cutthroat trout

The effects of patch size and isolation on juvenile emigration in gray-tailed voles, Microtus canicaudus

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

Correlation of endophyte toxins (ergovaline and lolitrem B) with clinical disease : fescue foot and perennial ryegrass staggers

Genetic diversity and interactions in populations of plants and pathogens

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