Index Catalog // ScholarsArchive@OSU

New perspectives on evolutionary relationships within Pinus (Pinaceae) and within subsection Ponderosae (subgenus Pinus)

Creator:: Willyard, Ann Nachreiner
Abstract:: A fossil-calibrated phylogenetic framework based on exemplars from each of the four taxonomic sections within Pinus was created using multiple nuclear and chloroplast loci. Calibration at the well-defined subgeneric split within Pinus with either fossil leaves and cones (ca. 45 million years ago) or fossil wood (ca. 85 million years...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Ann M. Willyard for the

Evolutionary relationships among Pinus (Pinaceae) subsections inferred from multiple low-copy nuclear loci

Creator:: Syring, John, Willyard, Ann, Cronn, Richard, and Liston, Aaron
Abstract:: Sequence data from nrITS and cpDNA have failed to fully resolve phylogenetic relationships among Pinus species. Four low‐copy nuclear genes, developed from the screening of 73 mapped conifer anchor loci, were sequenced from 12 species representing all subsections. Individual loci do not uniformly support either the nrITS or cpDNA hypotheses...
Resource Type:: Article
Full Text:: MULTIPLE LOW-COPY NUCLEAR LOCI1 JOHN SYRING,2 ANN WILLYARD,2 RICHARD CRONN,3 AND AARON LISTON2,4

Use of simultaneous analyses to guide fossil-based calibrations of Pinaceae phylogeny

Creator:: Gernandt, David S., Magallon, Susana, Lopez, Gretel Geada, Flores, Omar Zeron, Willyard, Ann, and Liston, Aaron
Abstract:: Uncertainties in the age and phylogenetic position of Pinaceae fossils present significant obstacles to our understanding of the timing of diversification in the family. We demonstrate that simultaneous phylogenetic analyses of chloroplastDNA(matK and rbcL) and nonmolecular characters that include both extant genera and a limited number of fossil taxa provide...
Resource Type:: Article
Full Text:: López,y Omar Zerón Flores,z Ann Willyard,§ and Aaron Listonk *Departamento de Botánica, Instituto de

Plastome phylogenomics in the genus Pinus using massively parallel sequencing technology

Creator:: Parks, Matthew Benjamin
Abstract:: This thesis summarizes work completed over the previous four years primarily focusing on chloroplast phylogenomic inquiry into the genus Pinus and related Pinaceae outgroups using next-generation sequencing on Illumina platforms. During the time of our work, Illumina sequence read lengths have essentially been limited to 25 to 100 base pairs,...
Resource Type:: Dissertation
Full Text:: dividends. Finally, this thesis is dedicated to my father and the memory of my mother, Ann Huenemann Parks

Phylogenetics and genomic patterns of speciation in Pinus with an empahsis on subgenus Strobus

Creator:: Syring, John V.
Abstract:: Data from nuclear ribosomal internal transcribed spacer regions (nrITS) and chloroplast DNA (cpDNA) have failed to resolve phylogenetic relationships in Pinus. To provide greater interspecific resolution, five low-copy nuclear genes were developed from mapped conifer anchor loci. Four genes were sequenced from species representing all Pinus subsections. Individual loci do...
Resource Type:: Dissertation
Full Text:: editing of each of the three manuscripts. Ann Willyard was involved in collecting sequencing data and

Reconsidering Relationships among Stem and Crown Group Pinaceae: Oldest Record of the Genus Pinus from the Early Cretaceous of Yorkshire, United Kingdom

Creator:: Ryberg, Patricia E., Rothwell, Gar W., Stockey, Ruth A., Hilton, Jason, Mapes, Gene, and Riding, James B.
Abstract:: This study describes a specimen that extends the oldest fossil evidence of Pinus L. to the Early Cretaceous Wealden Formation of Yorkshire, UK (131-129 million years ago), and prompts a critical reevaluation of criteria that are employed to identify crown group genera of Pinaceae from anatomically preserved seed cones. The...
Resource Type:: Article

Phylogenetic Estimation and Ancestral State Reconstruction of Rubus (Rosaceae) using Target Capture Sequencing

Creator:: Carter, Katherine A.
Abstract:: Hybridization, polyploidy, and apomixis have made phylogenetic estimation in Rubus challenging. I used target capture to sequence approximately 1000 low copy nuclear loci and the chloroplast genome for 94 accessions representing the genus Rubus and distributed worldwide. Species phylogenies were estimated using two coalescent based methods, ASTRAL-II and SVDQuartets, and...
Resource Type:: Masters Thesis

A contribution to the knowledge of the Odonata of Oregon

Creator:: Schuh, Joe, 1910-1981
Resource Type:: Masters Thesis
Full Text:: thrips, and one mite and several spiders. Imms (51) says that Willyard reports theni feeding on

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Creator:: Kral, George L.
Abstract:: The climate of the Pacific Northwest is in flux, and existing forest ecosystems are stressed and poised to shift in fundamental ways, with or without human intervention. This dissertation probes the nature of forest responses to environmental change through investigations of morphology and genetics of three species of alder co-occurring...
Resource Type:: Dissertation

Genomic Resources for Phylogenetics, Species Delimitation, and Geographic Localization of Neotropical Tree Species Cedrela odorata L. (Meliaceae)

Creator:: Finch, Kristen N.
Abstract:: Biodiversity loss is of global concern, and is due in part to deforestation and high consumer demand for wood and wood products. The neotropical tree species Cedrela odorata (“Spanish cedar” or “cedro”) is economically valuable for its wood and faces threats of overexploitation. Due to strong similarities in wood features...
Resource Type:: Dissertation
Full Text:: asked for countless recommendation letters from my undergraduate mentor, Dr. Ann Willyard, who is

ScholarsArchive@OSU

New perspectives on evolutionary relationships within Pinus (Pinaceae) and within subsection Ponderosae (subgenus Pinus)

Evolutionary relationships among Pinus (Pinaceae) subsections inferred from multiple low-copy nuclear loci

Use of simultaneous analyses to guide fossil-based calibrations of Pinaceae phylogeny

Plastome phylogenomics in the genus Pinus using massively parallel sequencing technology

Phylogenetics and genomic patterns of speciation in Pinus with an empahsis on subgenus Strobus

Reconsidering Relationships among Stem and Crown Group Pinaceae: Oldest Record of the Genus Pinus from the Early Cretaceous of Yorkshire, United Kingdom

Phylogenetic Estimation and Ancestral State Reconstruction of Rubus (Rosaceae) using Target Capture Sequencing

A contribution to the knowledge of the Odonata of Oregon

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Genomic Resources for Phylogenetics, Species Delimitation, and Geographic Localization of Neotropical Tree Species Cedrela odorata L. (Meliaceae)

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