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Filtering by: Has journal Plant, Cell & Environment Remove constraint Has journal: Plant, Cell & Environment Degree Field Microbiology Remove constraint Degree Field: Microbiology Non-Academic Affiliation Oregon State University. Honors College Remove constraint Non-Academic Affiliation: Oregon State University. Honors College

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Exploring phylogeny of Rhodococcus fascians isolates using 16S ribosomal DNA sequence analysis

Creator:

Sandberg, Eva Song

Abstract:

Rhodococcus fascians is a Gram-positive, pleiomorphic actinomycete that causes leafy gall formation in a wide range of plant hosts. This particular phytopathogen has been a focus of research at the Oregon State University Plant Clinic, a diagnostic laboratory. Phylogeny of R. fascians isolates obtained from Plant Clinic submissions was determined...

Resource Type:

Honors College Thesis

Full Text:

environmental stress by colonizing more protected regions of the plant such as junctions of epidermal cell walls
Study on the Evolution and Expression of the Pyoverdine Receptor FpvA inPseudomonas aeruginosa

Creator:

Singh, Amandip

Abstract:

Pseudomonas aeruginosa is a ubiquitous gram-negative bacterium that is capable of causing infections in people who are immune compromised. The bacterium can live in a variety of environments due to the variety of virulence factors it can produce. It is well adapted to living in iron-stringent conditions because it can...

Resource Type:

Honors College Thesis

Full Text:

siderophore called pyoverdine. Pyoverdines are transported back into the cell through a ferripyoverdine
Induction of apple defense genes by Erwinia amylovora and biological control agents

Creator:

Bauer, Lisa M.

Abstract:

Fire blight is a serious disease of apple and pear trees caused by the bacterium, Erwinia amylovora. This bacterium harbors a pathogenesis mechanism known as the Hrp secretory operon which induces some resistance genes and suppresses other resistance genes in the host plant following invasion. While previous researchers analyzed expression...

Resource Type:

Honors College Thesis

Full Text:

research may illustrate the variability of plant defense behavior in a changing environment
Metagenomics and metatranscriptomics of the leaf- and root-associated microbiomes of Zostera marina and Zostera japonica

Creator:

Wojahn, John Michael Adrian

Abstract:

A great deal of research has been focused on the microbiomes of terrestrial angiosperms (flowering plants), but much less research has been performed on the microbiomes of aquatic angiosperms (Turner et al. 2013). Eelgrass beds are extremely productive ecosystems that provide habitat for many marine organisms, such as fish, shellfish,...

Resource Type:

Honors College Thesis

Full Text:

study, the phylogenetic composition of plant-associated bacterial communities was not significantly
Characterization of Quorum-Sensing Diversity in Environmental Pseudomonas aeruginosa Populations

Creator:

Grellmann, Elise Kaylene

Abstract:

While the quorum-sensing (QS) diversity of the opportunistic pathogen Pseudomonas aeruginosa has been well established in cystic fibrosis (CF) lung infections and in vitro experiments, little is known about its QS-diversity in natural environments. One significant QS-deficient behavior is social cheating. Social cheaters contain mutations that prevent them from producing...

Resource Type:

Honors College Thesis

Full Text:

were in the rhl and pqs genes. We theorize that the compost environment provides fewer selective
Gene-specific antibiotic development: Evaluating effectiveness and investigating antibiotic-resistant Escherichia coli mutants of phosphorodiamidate morpholino oligomers

Creator:

Puckett, Susan E.

Abstract:

Phosphorodiamidate morpholino oligomers (PMOs) are novel antisense drugs in the early stages of development. These synthetic DNA mimics contain the same bases found in DNA and anneal to RNA in a complementary fashion. PMOs have been designed that target genes responsible for producing essential proteins in organisms such as Escherichia...

Resource Type:

Honors College Thesis

Full Text:

Escherichia coli. After the PMOs get into the bacterial cell (with peptides attached to facilitate their
Development of Fluorometric Assay for the Determination of β-glucosidase Activity in Brewing Yeasts

Creator:

Molitor, Andrew

Abstract:

Glycosides are natural molecules found in many plants and hold potential to release new flavors and aromas into alcoholic beverages, particularly beer and wine. One way to free these flavors and aromas is by enzymatic hydrolysis catalyzed by βglucosidase. The activities of β-glucosidase are strain and species dependent in yeast...

Resource Type:

Honors College Thesis

Full Text:

. .................................................................................... 28 Figure 11: Bar chart representing cell-associated and extracellular β-glucosidase
Distribution of Chlorociboria species in riparian forests of Western Oregon

Creator:

Kramer, Olivia E.

Abstract:

Transects were run at five locations in the Benton County area searching for samples of Chlorociboria spp. on dead wood, with fifteen total samples found. Of these samples, eight samples had the wood species identified, with the majority found on Acer macrophyllum and one on Salix spp. The density of...

Resource Type:

Honors College Thesis

Full Text:

types of wood available, Italy had a good environment for Chlorociboria growth (1). The Little Ice Age
Transcription Factors Associated with Tomato Seed Germination

Creator:

Sun, Jing

Abstract:

Seed germination is strictly defined as the physiological events before radicle protrusion through the endosperm cap, the endosperm region adjacent to the radicle tip. There are two opposing forces governing seed germination: the growth potential of the embryo and the mechanical resistance of the endosperm cap. The endosperm cap cell...

Resource Type:

Honors College Thesis

Full Text:

biosynthesis and response during Arabidopsis seed germination. The Plant Cell 15: 1591-1604. Sambrook J
Studies on the evolution and expression of the Type II ferripyoverdine receptor gene fpvAIIb in Pseudomonas aeruginosa

Creator:

Glover, Rochelle

Abstract:

When iron levels are low, the opportunistic pathogen Pseudomonas aeruginosa secretes the high-affinity iron-binding siderophore pyoverdine. The cognate ferripyoverdine receptor, FpvA, has gained attention as the most divergent gene in the organism’s genome, showing substantial evidence of positive selection. S-type pyocins, bacteriocins with specificity to Pseudomonads, enter cells through FpvA...

Resource Type:

Honors College Thesis

Full Text:

called siderophores, which bind iron (III) in the environment and transport it into the cell through

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Advisor

Schuster, Martin3
Ciuffetti, Lynda1
Crump, Byron C.1
Geller, Bruce1
Halsey, Kimberly H.1
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Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2006 to 2024

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Committee Member

Burke, Mary2
Blakemore, Paul R.1
Bruslind, Linda1
Curtin, Christopher1
Fox, James1
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Creator

Batish, Tanvi1
Bauer, Lisa M.1
Canakapalli, Sushumna S.1
Diaz Hui, Jonathan1
Fassio, Sara R.1
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Contributor

Halsey, Kimberly H.1
Penta, William Bryce1

Date

Date range begin – Date range end

Current results range from 2006 to 2023

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Decade

2020-20291
2010-201915
2000-20095

Degree Field

Microbiology[remove]21
Biology1
Botany1
Spanish1

Degree Level

Bachelor's21

Degree Name

Honors Bachelor of Science (H.B.S.)21
Honors Bachelor of Arts (H.B.A.)1

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application/msword1
application/pdf1
pdf1

Language

English [eng]21

License

All rights reserved18
Attribution-NonCommercial 4.0 (CC BY-NC 4.0)2
Attribution 4.0 (CC BY 4.0)1

Non-Academic Affiliation

Oregon State University. Honors College[remove]21

Peer Reviewed

No21

Resource Type

Honors College Thesis21

Rights Statement

In Copyright21

Subject

Actinomycetales1
Apples -- Disease and pest resistance -- Genetic aspects1
Corynebacterium diseases -- Genetic aspects1
Erwinia amylovora1
Fermented beverages1
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