Index Catalog // ScholarsArchive@OSU

A two-component regulatory system controlling antibiotic production by Pseudomonas flourescens Pf-5

Creator:: Corbell, Nathan
Abstract:: Tn5 mutagenesis of apdA (for antibiotic production) and deletion of gacA (for global antibiotic and cyanide) resulted in the same pleiotropic phenotype in Pseudomonas fluorescens (i.e. production of an array of secondary metabolites including the antibiotics pyrrolnitrin, pyoluteorin, and 2,4-diacetylphloroglucinol as well as a tryptophan-side-chain oxidase, hydrogen cyanide, and an...
Resource Type:: Dissertation
Full Text:: Approved: Joyce E. Loper Tn5 mutagenesis of apdA (for antibiotic production) and deletion of gacA (for

TonB-dependent outer-membrane proteins of Pseudomonas fluorescens : diverse and redundant roles in iron acquisition

Creator:: Hartney, Sierra L.
Abstract:: Pseudomonas is a diverse genus of Gram-negative bacteria that includes pathogens of plants, insects, and humans as well as environmental strains with no known pathogenicity. Pseudomonas fluorescens itself encompasses a heterologous group of bacteria that are prevalent in soil and on foliar and root surfaces of plants. Some strains of...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________________ Joyce E. Loper Pseudomonas is a diverse genus of Gram-negative bacteria that includes

Genomics-enabled exploration of insect toxicity in the Pseudomonas fluorescens group

Creator:: Rangel, Lorena I.
Abstract:: Pseudomonas is a diverse genus of Gamma proteobacteria that are ubiquitous in the natural environment, including soil, water, plant surfaces, and animals. The Pseudomonas fluorescens group is a diverse collection of seven subgroups and more than 50 named species. This group is known for their production of a variety of...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________________ Joyce E. Loper

Genetic analysis of catechol siderophore by Erwinia carotovora

Creator:: Bull, Carolee Theresa, 1962-
Resource Type:: Dissertation
Full Text:: Erwinia carotovora Abstract approved: Dr. Joyce E. Loper Twenty-two strains of Erwinia carotovora

Effect of soil water pressures on population dynamics of Fusarium equiseti, Glocladium virens, Talaromyces flavus and Trichoderma viride, biocontrol agents of Verticillium dahliae in potatoes

Creator:: Hussain, Shaukat
Resource Type:: Masters Thesis
Full Text:: to the faculty members Drs. Neil Christensen, Joyce Loper and Jeffry Miller, who served on my

Examination of the role host-selective toxins play in fungal-plant interactions

Creator:: Andrie, Rachael M.
Abstract:: Pyrenophora tritici-repentis, causal agent of tan spot of wheat, produces multiple host-selective toxins (HSTs), including Ptr ToxA, encoded for by ToxA, Ptr ToxB, encoded for by ToxB, and Ptr ToxC. Variable distribution of these three HSTs among different isolates of P. tritici-repentis, both singularly and in all possible combinations, defines...
Resource Type:: Dissertation
Full Text:: April 21. 2006. APPROVED: ajor Professor, represent otany and Plant Pathology eChair of the D

Molecular karyotyping of Ustilago hordei and related smut fungi

Creator:: McCluskey, Kevin
Resource Type:: Dissertation
Full Text:: committee: Da llice Mills, Terri Lomax, Joyce Loper, Everett Hansen, and Tom Wolpert. A special thanks is

Biology and control of Fusarium spp. on Douglas-fir (Pseudotsuga menziesii)

Creator:: Hoefnagels, Mariëlle Henriette, 1965-
Abstract:: Fusarium spp. are among the most important pathogens of Douglas-fir (Pseudotsuga menziesii) seedlings in bareroot nurseries. Currently the most effective disease control method is soil fumigation with methyl bromide. As methyl bromide is phased out, however, other disease management strategies may become more important. We explored two alternative approaches to...
Resource Type:: Dissertation
Full Text:: : Joyce Loper, Peter Bottomley, Randy Molina, and Patrick Breen. I am especially grateful to Joyce Loper

Biology, epidemiology, and biological and chemical control of Phytophthora vignae

Creator:: Fernando, W. Gerard Dilantha
Abstract:: Phytophthora vignae, causal agent of stem and root rot of cowpea (Vigna unguiculata), was reported for the first time in Sri Lanka. The pathogen was found in cowpea field soils from 3 of 5 geographic regions sampled. Only one site however, had plants exhibiting disease symptoms. Of the eight cowpea...
Resource Type:: Dissertation
Full Text:: . I am grateful to the members of my doctoral committee, Drs. Joyce Loper, Peter Bottomley, Russ

Effect of Tannic Acid on the Transcriptome of the Soil Bacterium Pseudomonas protegens Pf-5

Creator:: Lim, Chee Kent, Penesyan, Anahit, Hassan, Karl A., Loper, Joyce E., and Paulsen, Ian T.
Abstract:: Tannins are a diverse group of plant-produced, polyphenolic compounds with metal-chelating and antimicrobial properties that are prevalent in many soils. Using transcriptomics, we determined that tannic acid, a form of hydrolysable tannin, broadly affects the expression of genes involved in iron and zinc homeostases, sulfur metabolism, biofilm formation, motility, and...
Resource Type:: Article
Full Text:: Bacterium Pseudomonas protegens Pf-5 Chee Kent Lim,a* Anahit Penesyan,a Karl A. Hassan,a Joyce E. Loper,b

ScholarsArchive@OSU

A two-component regulatory system controlling antibiotic production by Pseudomonas flourescens Pf-5

TonB-dependent outer-membrane proteins of Pseudomonas fluorescens : diverse and redundant roles in iron acquisition

Genomics-enabled exploration of insect toxicity in the Pseudomonas fluorescens group

Genetic analysis of catechol siderophore by Erwinia carotovora

Effect of soil water pressures on population dynamics of Fusarium equiseti, Glocladium virens, Talaromyces flavus and Trichoderma viride, biocontrol agents of Verticillium dahliae in potatoes

Examination of the role host-selective toxins play in fungal-plant interactions

Molecular karyotyping of Ustilago hordei and related smut fungi

Biology and control of Fusarium spp. on Douglas-fir (Pseudotsuga menziesii)

Biology, epidemiology, and biological and chemical control of Phytophthora vignae

Effect of Tannic Acid on the Transcriptome of the Soil Bacterium Pseudomonas protegens Pf-5

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