Index Catalog // ScholarsArchive@OSU

Small secreted proteins of pyrenophora tritici-repentis and their role in wheat Infection

Creator:: Hernandez, Jason, Manning, Viola, Pandelova, Iovanna, and Ciuffetti, Lynda M.
Abstract:: Host-selective toxins (HSTs) secreted by the pathogenic isolate of Pyrenophora tritici-repentis, BFP, are major pathogenicity factors in tan spot disease of wheat. Along with characterized HSTs such as Ptr ToxA (ToxA), BFP secretes at least two more uncharacterized toxic components. In an attempt to identify these additional components, 12 candidate...
Resource Type:: Research Paper

An Ephemeral Sexual Population of Phytophthora infestans in the Northeastern United States and Canada

Creator:: Danies, Giovanna, Myers, Kevin, Mideros, María F., Restrepo, Silvia, Martin, Frank N., Cooke, David E. L., Smart, Christine D., Ristaino, Jean B., Seaman, Abby J., Gugino, Beth K., Grünwald, Niklaus J., and Fry, William E.
Abstract:: Phytophthora infestans, the causal agent of late blight disease, has been reported in North America since the mid-nineteenth century. In the United States the lack of or very limited sexual reproduction has resulted in largely clonal populations of P. infestans. In 2010 and 2011, but not in 2012 or 2013,...
Resource Type:: Article

Seasonality as a driving factor of decomposition pathways in both meadows and forests : an exploration across a gradient of climate in Oregon

Creator:: Colby, Samantha E.
Abstract:: Soil food webs process the majority of terrestrial carbon, and influence overall ecosystem function. A primary distinction among soil food webs is based on fungal versus bacterial pathways of decomposition; these lead to fundamentally different soil function, and are expected to differ in dominance between meadows and forests. This assumption...
Resource Type:: Masters Thesis

Mitigating cyanobacterial harmful algae blooms : the role of plant humics

Creator:: Theis, Susan A. F.
Abstract:: Cyanobacterial harmful algae blooms (cyanoHABs) are a growing concern worldwide due to damage of ecosystems and threats to human health. Previous research indicates that plant humics from aquatic and wetland vascular plants are effective inhibitors of cyanobacterial metabolism and growth and may be useful as control agents for mitigating cyanoHABs....
Resource Type:: Masters Thesis

Separate Introns Gained within Short and Long Soluble Peridinin-Chlorophyll a-Protein Genes during Radiation of Symbiodinium (Dinophyceae) Clade A and B Lineages

Creator:: Reichman, Jay R. and Vize, Peter D.
Abstract:: Correction: 21 Jan 2015: The PLOS ONE Staff (2015) Correction: Separate Introns Gained within Short and Long Soluble Peridinin-Chlorophyll a-Protein Genes during Radiation of Symbiodinium (Dinophyceae) Clade A and B Lineages. PLOS ONE 10(1): e0117735. https://doi.org/10.1371/journal.pone.0117735
Resource Type:: Article

Myosins VIII and XI Play Distinct Roles in Reproduction and Transport of Tobacco Mosaic Virus

Creator:: Amari, Khalid, Di Donato, Martin, Dolja, Valerian V., and Heinlein, Manfred
Abstract:: Viruses are obligatory parasites that depend on host cellular factors for their replication as well as for their local and systemic movement to establish infection. Although myosin motors are thought to contribute to plant virus infection, their exact roles in the specific infection steps have not been addressed. Here we...
Resource Type:: Article

Yosemite region nitrogen deposition and patterns in the composition of lichen communities

Creator:: Hutten, Martin
Abstract:: This dissertation describes patterns in epiphytic macrolichen community composition along a nitrogen deposition gradient in the Yosemite region of the Sierra Nevada in California. This region is part of the largest federal air quality Class 1 designated air-shed in the western United States, covering the entire crest of the Sierra...
Resource Type:: Dissertation

Phytosanitation of Douglas-fir (Pseudotsuga menziesii) logs to mitigate the risk of artificially disseminating Phytophthora ramorum within the global trade of timber

Creator:: Hulbert, Joseph M.
Abstract:: Phytophthora ramorum is a plant pathogen that was accidentally introduced to the United States. This invasive microorganism has killed over a million trees in California and Oregon, and continues to spread to new areas. Diseased areas have been nationally quarantined to prevent further spread and more than ninety countries include...
Resource Type:: Masters Thesis

Interactions between nitrogen, phosphorus, and molybdenum in forest soils and cyanobacterial lichen in the Oregon Coast Range

Creator:: Marks, Jade A.
Abstract:: Molybdenum is an essential component of biogeochemical cycling, most notably as a component of the nitrogenase enzyme used in biological nitrogen (N) fixation. While the important role of phosphorus (P) in limiting N fixation in ecosystems has been well documented, occurrence and prevalence of molybdenum (Mo) limitation is largely unknown....
Resource Type:: Masters Thesis

Latent homology and convergent regulatory evolution underlies the repeated emergence of yeasts

Creator:: Nagy, László G., Ohm, Robin A., Kovács, Gábor M., Floudas, Dimitrios, Riley, Robert, Gácser, Attila, Sipiczki, Mátyás, Davis, John M., Doty, Sharon L., de Hoog, G Sybren, Lang, B. Franz, Spatafora, Joseph W., Martin, Francis M., Grigoriev, Igor V., and Hibbett, David S.
Abstract:: Convergent evolution is common throughout the tree of life, but the molecular mechanisms causing similar phenotypes to appear repeatedly are obscure. Yeasts have arisen in multiple fungal clades, but the genetic causes and consequences of their evolutionary origins are unknown. Here we show that the potential to develop yeast forms...
Resource Type:: Article

Systematic, genomic, and transcriptomic analysis of mycoparasitic Tolypocladium species and their Elaphomyces hosts

Creator:: Quandt, C. Alisha
Abstract:: Fungi in the genus Tolypocladium are diverse in their host associations, but the predominant ecologies include parasites of the ectomycorrhizal genus Elaphomyces and pathogens of insects. The aim of this dissertation research is to examine the evolution of these fungi and their host associations. To accomplish this several lines of...
Resource Type:: Dissertation

Concepts of Sustainability, Motivations for Pest Management Approaches, and Implications for Communicating Change

Creator:: Sherman, Jennifer and Gent, David H.
Abstract:: Impact and relevance are valued by both plant pathologists and the supporters of research and extension. Impact has been characterized as the “So what?” of research results, and in applied research in agriculture typically involves some change in human behavior. This might involve, for instance, avoidance of broad spectrum pesticides,...
Resource Type:: Article

Analysis of Genome Sequences from Plant Pathogenic Rhodococcus Reveals Genetic Novelties in Virulence Loci

Creator:: Creason, Allison L., Vandeputte, Olivier M., Savory, Elizabeth A., Davis, Edward W., II, Putnam, Melodie L., Hu, Erdong, Swader-Hines, David, Mol, Adeline, Baucher, Marie, Prinsen, Els, Zdanowska, Magdalena, Givan, Scott A., El Jaziri, Mondher, Loper, Joyce E., Mahmud, Taifo, and Chang, Jeff H.
Abstract:: Members of Gram-positive Actinobacteria cause economically important diseases to plants. Within the Rhodococcus genus, some members can cause growth deformities and persist as pathogens on a wide range of host plants. The current model predicts that phytopathogenic isolates require a cluster of three loci present on a linear plasmid, with...
Resource Type:: Article

Dissecting a Hidden Gene Duplication: The Arabidopsis thaliana SEC10 Locus

Creator:: Vukašinović, Nemanja, Cvrčková, Fatima, Eliáš, Marek, Cole, Rex A., Fowler, John E., Žárský, Viktor, and Synek, Lukáš
Abstract:: Repetitive sequences present a challenge for genome sequence assembly, and highly similar segmental duplications may disappear from assembled genome sequences. Having found a surprising lack of observable phenotypic deviations and non-Mendelian segregation in Arabidopsis thaliana mutants in SEC10, a gene encoding a core subunit of the exocyst tethering complex, we...
Resource Type:: Article

Identification and distribution of the mating-type locus and development of cleistothecia of Podosphaera macularis

Creator:: Wolfenbarger, Sierra N.
Abstract:: Podosphaera macularis, causal agent of hop powdery mildew, is known to produce cleistothecia (syn. chasmothecia) in eastern North America and Europe, but ascocarps are not reported from the Pacific Northwestern region of North America. Reasons for the apparent absence of cleistothecia in the Pacific Northwest are unknown. We established that...
Resource Type:: Masters Thesis

Constructing a gene expression atlas of Chia (Salvia hispanica)

Creator:: Phillips, Jeremy Levi, Geniza, Matthew, Haq, Ebaad, and Jaiswal, Pankaj
Abstract:: • Salvia hispanica, also known as Chia, is an annual plant of the mint family, Lamiaceae. Chia is a vascular plant with perennating buds initially formed at or within the soil surface. Chia grows to roughly one meter tall at maturity, with leaves growing in opposite arrangement, small purple flowers,...
Resource Type:: Poster

Variable Suites of Non-effector Genes Are Co-regulated in the Type III Secretion Virulence Regulon across the Pseudomonas syringae Phylogeny

Creator:: Mucyn, Tatiana S., Yourstone, Scott, Lind, Abigail L., Biswas, Surojit, Nishimura, Marc T., Baltrus, David A., Cumbie, Jason S., Chang, Jeff H., Jones, Corbin D., Dangl, Jeffery L., and Grant, Sarah R.
Abstract:: Pseudomonas syringae is a phylogenetically diverse species of Gram-negative bacterial plant pathogens responsible for crop diseases around the world. The HrpL sigma factor drives expression of the major P. syringae virulence regulon. HrpL controls expression of the genes encoding the structural and functional components of the type III secretion system...
Resource Type:: Article

Phytophthora species and riparian alder tree damage in western Oregon

Creator:: Sims, Laura L.
Abstract:: The genus Phytophthora contains some of the most destructive pathogens of forest trees, including the most destructive pathogen of alder in recent times, Phytophthora alni. Alder trees were reported to be suffering from canopy dieback in riparian ecosystems in western Oregon, which prompted a survey of alder health and monitoring...
Resource Type:: Dissertation

Improbability mapping: a metric for satellite-detection of submarine volcanic eruptions

Creator:: O'Malley, Robert T., Behrenfeld, Michael J., Westberry, Toby K., Milligan, Allen J., Reese, Douglas C., and Halsey, Kimberly H.
Abstract:: Submarine volcanic eruptions can result in both real and apparent changes in marine algal communities, e.g., increases in phytoplankton biomass and/or growth rates that can cover thousands of square kilometers. Satellite ocean color monitoring detects these changes as increases in chlorophyll and particulate backscattering. Detailed, high resolution analysis is needed...
Resource Type:: Article

ScholarsArchive@OSU

Small secreted proteins of pyrenophora tritici-repentis and their role in wheat Infection

An Ephemeral Sexual Population of Phytophthora infestans in the Northeastern United States and Canada

Seasonality as a driving factor of decomposition pathways in both meadows and forests : an exploration across a gradient of climate in Oregon

Mitigating cyanobacterial harmful algae blooms : the role of plant humics

Separate Introns Gained within Short and Long Soluble Peridinin-Chlorophyll a-Protein Genes during Radiation of Symbiodinium (Dinophyceae) Clade A and B Lineages

Myosins VIII and XI Play Distinct Roles in Reproduction and Transport of Tobacco Mosaic Virus

Yosemite region nitrogen deposition and patterns in the composition of lichen communities

Phytosanitation of Douglas-fir (Pseudotsuga menziesii) logs to mitigate the risk of artificially disseminating Phytophthora ramorum within the global trade of timber

Interactions between nitrogen, phosphorus, and molybdenum in forest soils and cyanobacterial lichen in the Oregon Coast Range

Latent homology and convergent regulatory evolution underlies the repeated emergence of yeasts

Systematic, genomic, and transcriptomic analysis of mycoparasitic Tolypocladium species and their Elaphomyces hosts

Concepts of Sustainability, Motivations for Pest Management Approaches, and Implications for Communicating Change

Analysis of Genome Sequences from Plant Pathogenic Rhodococcus Reveals Genetic Novelties in Virulence Loci

Dissecting a Hidden Gene Duplication: The Arabidopsis thaliana SEC10 Locus

Identification and distribution of the mating-type locus and development of cleistothecia of Podosphaera macularis

Constructing a gene expression atlas of Chia (Salvia hispanica)

Variable Suites of Non-effector Genes Are Co-regulated in the Type III Secretion Virulence Regulon across the Pseudomonas syringae Phylogeny

Phytophthora species and riparian alder tree damage in western Oregon

Improbability mapping: a metric for satellite-detection of submarine volcanic eruptions

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