Index Catalog // ScholarsArchive@OSU

An improved method for the isolation of [triangle]²-IPP:tRNA isopentenyltransferase activity from Saccharomyces cerevisiae

Creator:: Kee, Saik Chuan
Resource Type:: Masters Thesis
Full Text:: goes to Dr. Donald J. Armstrong for his excellent guidance, perseverence and moral support. This

Cytokinin antagonists and antibiotics related to nalidixic acid : effects on Phaseolus and Nicotiana callus tissues

Creator:: Marsden, Katherine E.
Abstract:: The effects of five cytokinin antagonists on the growth of cytokinin-autonomous lines of Phaseolus lunatus cv. Kingston, Phaseolus vulgaris cv. Great Northern, and Nicotiana tabacum cv. Wisconsin 38 callus tissues have been compared. The antagonists tested included four N⁴-substituted 4-amino-2-methylthiopyrrolo[2,3-d]pyrimidines bearing the following N⁴ side chains, 4-n-pentyl- (ms²pnN⁴Prp), 4-n-hexyl- (ms²HxN⁴Prp),...
Resource Type:: Masters Thesis
Full Text:: Nicotiana Callus Tissue Abstract approved: Redacted for Privacy Donald J. 7 The effects of five cytokinin

Conservation biology of Plagiobothrys hirtus (Boraginaceae) : evaluation of life history and population enhancement

Creator:: Amsberry, Kelly
Abstract:: Plagiobothrys hirtus (Boraginaceae) is a state and federally listed endangered plant found only in Douglas County, Oregon. This vernal pool endemic has historically been threatened by agricultural conversion of seasonal wetlands in the Sutherlin area, and is currently being eradicated as habitat is lost due to the rapid urban development...
Resource Type:: Masters Thesis

Conservation biology of Perideridia erythrorhiza (Apiaceae) : experimental reintroduction and life history

Creator:: Roberts, Kimberly A.
Abstract:: An experimental reintroduction was performed to determine the best method to create new populations of the tuberous species Perideridia erythrorhiza, a rare vascular plant endemic to southern Oregon. Only a handful of sites are currently present, and many of these are subject to other land uses such as urban development...
Resource Type:: Masters Thesis
Full Text:: conservation. HortScience 32:29-34. Agren, J. 1996. Population size, pollinator limitation, and seed set in

The influence of prescribed fire on the rare endemic plant Delphinium pavonaceum (Peacock larkspur)

Creator:: McKernan, Brie-Anne
Abstract:: In the wetland prairie of William L. Finley National Wildlife Refuge (FNWR) in western Oregon, we investigated the response of Delphinium pavonaceum Ewan (peacock larkspur, Ranunculaceae), an endangered perennial forb, to four unreplicated dormant season fire regimes of 0, 2, 4, or 10 fires that were applied over a 12-year...
Resource Type:: Masters Thesis

Comparison of the water relations characteristics of woody plants in western Oregon

Creator:: Davis, Kent J.
Abstract:: I studied the water relations traits, twig conductivity, C'3 isotopic composition, and wood density of three conifer and five angiosperm species in western Oregon. This study took place from spring 2002 to fall 2003 on four sites. Species were selected to represent the diversity of drought tolerance of woody plants...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kent J. Davis for the degree of

Biosystematic studies of Phacelia capitata (Hydrophyllaceae), a species endemic to serpentine soils in southwestern Oregon

Creator:: Shelly, J. Stephen
Abstract:: Phacelia capitata Rruckeberg is a member of the Phacelia magellanica polyploid complex (species group Magellanicae), a group of wide-ranging, polymorphic perennials in western North America related to the South American P. secunda (= P. magellanica). The purpose of this project was to determine, to the extent possible, the interrelationships of...
Resource Type:: Masters Thesis
Full Text:: (Hydrophyllaceae), a Species Endemic to Serpentine Soils in Southwestern Oregon AN ABSTRACT OF THE THESIS OF J

Studies on inhibitory compounds produced by Agrobacterium radiobacter strain 84

Creator:: Staver, Michael J.
Abstract:: A study was made of compounds produced by Agrobacterium radiobacter strain 84 that are inhibitory to some pathogenic strains of A. tumefaciens. Agrocins (inhibitory compounds) were partially purified from large volumes of A. radiobacter strain 84 culture supernatants to determine (i) if more than one agrocin is produced, (ii) if...
Resource Type:: Masters Thesis
Full Text:: Agrobacterium radiobacter strain 84 by Michael J. Stayer A THESIS submitted to Oregon State University in

Population dynamics, extraction, and response to nematicide of three plant parasitic nematodes on peppermint (mentha piperita L.)

Creator:: Merrifield, Kathryn J.
Abstract:: The efficiencies of wet sieving/sucrose centrifugation (WS/SC) recovery of Pratylenchus penetrans (59 %), Paratylenchus sp., (80 %), and Criconemella xenoplax (66 %) were established. Baermann funnels (BF) recovered significantly more P. penetrans (p = 0.01) and significantly less (p = 0.01) C. xenoplax than did WS/SC. While densities of P....
Resource Type:: Masters Thesis
Full Text:: OF Kathryn J. Merrifield for the degree of Master of Science in Botany and Plant Pathology

Drivers of Soil Fungal Communities Across Three Tropical Rainforests in Panama

Creator:: Schappe, Tyler
Abstract:: Fungi play critical roles in ecosystem processes and interact with plant communities in mutualistic, pathogenic, and commensal ways. Fungal communities are thought to be influenced by both associated tree communities and soil properties. However, the relative importance of the biotic and abiotic drivers of soil fungal community structure and diversity...
Resource Type:: Masters Thesis
Full Text:: tropical montane forest. Fungal Ecology, 27, 14–23. Davison, J., Moora, M., Öpik, M., Adholeya, A

ScholarsArchive@OSU

An improved method for the isolation of [triangle]²-IPP:tRNA isopentenyltransferase activity from Saccharomyces cerevisiae

Cytokinin antagonists and antibiotics related to nalidixic acid : effects on Phaseolus and Nicotiana callus tissues

Conservation biology of Plagiobothrys hirtus (Boraginaceae) : evaluation of life history and population enhancement

Conservation biology of Perideridia erythrorhiza (Apiaceae) : experimental reintroduction and life history

The influence of prescribed fire on the rare endemic plant Delphinium pavonaceum (Peacock larkspur)

Comparison of the water relations characteristics of woody plants in western Oregon

Biosystematic studies of Phacelia capitata (Hydrophyllaceae), a species endemic to serpentine soils in southwestern Oregon

Studies on inhibitory compounds produced by Agrobacterium radiobacter strain 84

Population dynamics, extraction, and response to nematicide of three plant parasitic nematodes on peppermint (mentha piperita L.)

Drivers of Soil Fungal Communities Across Three Tropical Rainforests in Panama

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