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Filtering by: Subject Ponderosa pine -- Diseases and pests -- Control Remove constraint Subject: Ponderosa pine -- Diseases and pests -- Control Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology License All rights reserved Remove constraint License: All rights reserved

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Candidate Genes Associated with Blister Rust Resistance in Whitebark Pine (Pinus albicaulis) Revealed through de novo Transcriptome Assembly and Differential Gene Expression Analysis

Creator:

Bair, Zolton J.

Abstract:

Whitebark pine (Pinus albicaulis) is an iconic North American high-elevation tree species currently threatened by climate change, mountain pine beetle, and white pine blister rust (WPBR), a lethal disease caused by the non-native fungal pathogen Cronartium ribicola. In collaboration with the USDA Forest Service Dorena Genetic Resource Center, germplasm was...

Resource Type:

Dissertation

Full Text:

-elevation tree species currently threatened by climate change, mountain pine beetle, and white pine
Studies on the etiology and epidemiology of bull's eye rot of pears

Creator:

Henriquez, Jose Luis, 1961-

Abstract:

The objective of this dissertation is to introduce low-cost processing methods for the fabrication of ZnO transparent thin-film transistors (TTFTs). A novel method for depositing ZnO body layers via spin-coating of a zinc nitrate-based spin solution is presented. The processing conditions of spin-coated ZnO are optimized to produce continuous and...

Resource Type:

Dissertation

Full Text:

, where the highest levels of disease were found at 10°C and at 30°C, respectively. Wetness duration did
Histological comparisons of needle tissues of four species of white pine infected by Cronartium ribicola

Creator:

Sweeney, Katarina

Abstract:

Hypersensitive response-like (HR-like) needle reactions to infection by the white pine blister rust pathogen, Cronartium ribicola, have been reported for several species of five needle pines native to western North America. The best-studied examples are in Pinus monticola and P. lambertiana. In these species a "needle spot" phenotype has been...

Resource Type:

Masters Thesis

Full Text:

white pine blister rust pathosystem……………………………. 1 1.2 White pine blister rust symptoms and damage
Biology of sweet cherry powdery mildew

Creator:

Calabro, Jill M.

Abstract:

The Pacific Northwest has become one of the nation’s premier sweet cherry, Prunus avium, production areas. As production of sweet cherries has flourished in Oregon and Washington, so has powdery mildew, caused by the fungus Podosphaera clandestina, which infects both foliage and fruit causing severe economic damage to growers. Sweet...

Resource Type:

Dissertation

Full Text:

1.3 Disease cycle of sweet cherry powdery mildew………...8 1.4 Disease forecasting and control
Evaluation of the colonization and biofilm production by Burkholderia pyroccinia FP62 on geranium leaves

Creator:

Wallace, Patricia K.

Abstract:

The leaf surface is a stark environment for bacterial colonists with limited availability of nutrients, water and protected niches. Despite these limitations, a plethora of bacteria appear to have adapted ways to survive and flourish on leaf surfaces. One mechanism of survival is the formation of biofilms. Biofilms are a...

Resource Type:

Masters Thesis

Full Text:

biofilm formation in the biological control of foliar pathogens. The spatial and temporal dynamics of
Examinations of Fusarium sambucinum on Humulus lupulus and co-infection with hop stunt viroid in commercial hop fields

Creator:

Cerruti, Natasha R.

Abstract:

After an unusually high incidence of Fusarium canker was observed in commercial hop fields of the Pacific Northwest, field surveys were conducted and revealed that canker incidence ranged from 20 to 60% of bines sampled in six commercial fields, as well as wide-spread Hop stunt viroid infection in these six...

Resource Type:

Masters Thesis

Full Text:

reducing canker with thiabendazole and Brestan 60, but control varied among years, due to the incidence
Biology and management of Meloidogyne chitwoodi using oxamyl on potato in the western United States

Creator:

David, Nicholas L.

Abstract:

Field trials were conducted during 2001 to 2003 to investigate soil population dynamics of Meloidogyne chitwoodi, tuber symptom suppression using oxamyl, and post-harvest tuber symptom development on short-season potato varieties Russet Norkotah and Russet Nugget (San Luis Valley only). The experiments were located in the San Luis Valley in Colorado,...

Resource Type:

Dissertation

Full Text:

control M. chitwoodi densities in the soil. For that reason, internal and external symptoms
The epidemiology of sudden oak death in Oregon forests

Creator:

Peterson, Ebba K.

Abstract:

The phytopathogen Phytophthora ramorum (Werres, DeCock & Man in't Veld), causal agent of Sudden Oak Death (SOD) of oaks (Quercus spp.) and tanoaks (Notholithocarpus densiflorus syn. Lithocarpus densiflorus), is established in coastal forests of the western United States. Since the discovery of SOD in the Douglas-fir / tanoak forests of...

Resource Type:

Dissertation

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understand and control P. ramorum in natural, landscaped, and nursery environments. This work aims to
Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

Creator:

Gordon, Tyler C.

Abstract:

Stem rust, caused by the fungus Puccinia graminis subsp. graminicola, can cause yield reductions exceeding 90% on perennial ryegrass (Lolium perenne L.) crops grown for seed if not treated with fungicide in the spring. There is evidence that late-spring stem rust epidemics are initiated by populations that survived the winter....

Resource Type:

Masters Thesis

Full Text:

with the area under the disease progress curve (AUDPC) between 1 March and 15 April calculated from
Characterization, epidemiology, and ecology of a virus associated with black raspberry decline

Creator:

Halgren, Anne B.

Abstract:

The objective of this study was to characterize an unknown agent associated with decline in black raspberry (Rubus occidentalis) in Oregon. A virus was found consistently associated with decline symptoms of black raspberries and was named Black raspberry decline associated virus (BRDaV). Double stranded RNA extraction from BRDaV-infected black raspberry...

Resource Type:

Dissertation

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disease control is not feasible. Often, controlling the invertebrate vector is the primary and most

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Academic Affiliation

Botany and Plant Pathology[remove]12
Crop and Soil Science1

Advisor

Hamm, Philip B.1
Hansen, Everett M.1
Ingham, Russell E.1
Mahaffee, Walt1
Martin, Robert R.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2004 to 2017

View distribution

Committee Member

Johnson, Kenneth4
Johnson, Ken2
Parke, Jennifer2
Azarenko, Anita1
Chang, Jeffrey H.1
more Committee Members »

Creator

Bair, Zolton J.1
Calabro, Jill M.1
Cerruti, Natasha R.1
David, Nicholas L.1
Florence, Jade1
more Creators »

Date

Date range begin – Date range end

Current results range from 2003 to 2017

View distribution

Decade

2010-20198
2000-20094

Degree Field

Botany and Plant Pathology12
Soil Science1

Degree Level

Doctoral7
Master's5

Degree Name

Doctor of Philosophy (Ph.D.)7
Master of Science (M.S.)5

File Format

application/pdf2

Language

English [eng]12

License

All rights reserved[remove]12

Non-Academic Affiliation

Oregon State University. Graduate School12

Peer Reviewed

No10

Resource Type

Dissertation7
Masters Thesis5

Rights Statement

In Copyright12

Subject

Autolysis1
Biofilms1
Black raspberries -- Diseases and pests -- Control -- Oregon1
Black raspberries -- Virus diseases -- Control -- Oregon1
Black raspberries -- Viruses -- Oregon1
more Subjects »

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