Index Catalog // ScholarsArchive@OSU

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:: and tested the code. Zhian N. Kamvar and Niklaus J. Grünwald conceived, discussed implications, and

Development of a diagnostic assay for Phytophthora ramorum lineage detection

Creator:: Roig-Paul, Mireia
Abstract:: Phytophthora ramorum is the causal agent of Sudden Oak Death (SOD), which is an economically and environmentally important disease causing up to 80% mortality of tanoaks in Pacific Northwest coastal forests (LeBoldus et al., 2022). There are currently four clonal lineages in the United States and Europe, named North America...
Resource Type:: Undergraduate Thesis
Full Text:: . https://doi.org/10.1016/j.jcv.2012.05.006 Gagnon, M.-C., Bergeron, M.-J., Hamelin, R. C., Grünwald, N

Development of Computational, Visualization, and Molecular Tools for Fungal and Oomycete Community Ecology

Creator:: Foster, Zachary Stephen Longiaru
Abstract:: Oomycetes are an important group of organisms with a variety of ecological roles similar to fungi. Although many are well-studied plant pathogens known for their devastating effects on agricultural systems, most are little-studied saprobes and parasites of plants and animals in nearly every ecosystem on earth. The advent of affordable...
Resource Type:: Dissertation
Full Text:: Oomycete Community Ecology Abstract approved: Niklaus J. Grünwald Oomycetes are an important group of

Inferring Patterns and Processes of Emergence in Clonal Phytophthora Epidemics using Population Genomic Approaches

Creator:: Cauldron, Nicholas C.
Abstract:: Oomycete and fungal pathogens threaten food, fiber, and forests around the world. With climate change, these pathogens are expected to emerge more frequently. Evolution can facilitate their emergence through mechanisms such as mutations that change or expand host range. Characterizing evolutionary mechanisms in plant pathogens will contribute to our ability...
Resource Type:: Dissertation
Full Text:: . Abstract approved: ______________________________________________________ Niklaus J. Grünwald

Phylogeography and Evolution of Effector Genes in Phytophthora Species

Creator:: Shakya, Shankar K.
Abstract:: Plant pathogens in the genus Phytophthora are known to cause disease on field crops, nursery plants, and forest trees. The best known example probably is Phytophthora infestans, which triggered the infamous Irish potato famine. Other important Phytophthora species include: P. ramorum (sudden oak death pathogen), P. sojae (soybean root rot...
Resource Type:: Dissertation
Full Text:: . Abstract approved: ______________________________________________________ Niklaus J. Grünwald

Integration of Evolutionary Theory and Genomics to Understand Processes Involved in Host Adaptation and Divergence in Phytophthora Plant Pathogens

Creator:: Tabima, Javier F.
Abstract:: Modern plant pathology benefits from integrating methods and concepts from evolutionary biology. For example, evolutionary concepts are used to identify and examine species boundaries of plant pathogens, recognize processes underlying pathogen biogeography, identify traits that characterize emerging species, and discover new molecular interactions that originate under processes of selection. In...
Resource Type:: Dissertation
Full Text:: Niklaus J. Grünwald Modern plant pathology benefits from integrating methods and concepts from

Comparative epidemiology of Phytophthora diseases of Rhododendron

Creator:: Taylor, Clare Rebecca
Abstract:: Rhododendron species are host to many Phytophthora species and are an important crop in the nursery industry. The foliar epidemiology of twelve Phytophthora diseases on Rhododendron was studied in field and growth chamber experiments on two Rhododendron cultivars. The relative aggressiveness of Phytophthora spp. was assessed using disease incidence, severity,...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________ Niklaus J Grünwald Rhododendron species are host to many Phytophthora species and are

Fungal endophyte diversity in foliage of native and cultivated Rhododendron species determined by culturing, ITS sequencing, and pyrosequencing

Creator:: Raizen, Nathaniel L.
Abstract:: Western Oregon is home to native Rhododendron species and is the center for cultivated Rhododendron production in the United States. These Rhododendron spp. are known to be infected with fungal endophytes. However, the community structure of these endophytes in native and cultivated Rhododendron is poorly understood. Our study targeted the...
Resource Type:: Masters Thesis
Full Text:: approved: Niklaus J. Grünwald Western Oregon is home to native Rhododendron species and is

Genome sequences of Phytophthora enable translational plant disease management and accelerate research

Creator:: Grünwald, Niklaus J.
Abstract:: Des séquences entières ou partielles de génomes deviennent de plus en plus accessibles. En ce qui concerne plusieurs systèmes plante-agent pathogène, nous abordons l’ère du recéquençage du génome. Les premiers génomes de Phytophthora, P. ramorum et P. sojae, ont été disponibles à partir de 2004, suivis de près par celui...
Resource Type:: Article
Full Text:: N. J. Grünwald 14 scale on Japanese larch in Europe (Brasier & Webber, 2010; Grünwald et al., 2012

Addressing the relationship between Pseudoperonospora cubensis and P. humuli using phylogenetic analyses and host specificity assays

Creator:: Mitchell, Melanie N.
Abstract:: The two most economically important plant pathogens in the Pseudoperonospora (Peronosporaceae) genus are P. cubensis, causal agent of cucurbit downy mildew, and P. humuli, causal agent of hop downy mildew. These organisms have been shown to be very closely related phylogenetically and morphologically. In 2005, researchers in Korea proposed that...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Melanie N

ScholarsArchive@OSU

Development and Application of Tools for Genetic Analysis of Clonal Populations

Development of a diagnostic assay for Phytophthora ramorum lineage detection

Development of Computational, Visualization, and Molecular Tools for Fungal and Oomycete Community Ecology

Inferring Patterns and Processes of Emergence in Clonal Phytophthora Epidemics using Population Genomic Approaches

Phylogeography and Evolution of Effector Genes in Phytophthora Species

Integration of Evolutionary Theory and Genomics to Understand Processes Involved in Host Adaptation and Divergence in Phytophthora Plant Pathogens

Comparative epidemiology of Phytophthora diseases of Rhododendron

Fungal endophyte diversity in foliage of native and cultivated Rhododendron species determined by culturing, ITS sequencing, and pyrosequencing

Genome sequences of Phytophthora enable translational plant disease management and accelerate research

Addressing the relationship between Pseudoperonospora cubensis and P. humuli using phylogenetic analyses and host specificity assays

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