Index Catalog // ScholarsArchive@OSU

Tumorigenic bacteria from blueberry stem galls are related to Rhizobium tumorigenes-like Agrobacteria found in Rhododendron crown gall in Germany

Creator:: Khalib, Nurul Ain
Abstract:: Blueberry stem galls in Pacific Northwest are often attributed to Agrobacterium tumefaciens. The disease also is associated with indole-3-acetic-acid (IAA) producing bacteria, as described on cranberry stem gall. Lack of studies makes it difficult to conclude whether these two types of bacteria could be the causal agent of stem gall...
Resource Type:: Undergraduate Thesis
Full Text:: APPROVED: Virginia Stockwell, Ph.D. USDA ARS Hort. Crops Research Unit

Characterization of the Plasmids of the Pathogenic Plant Bacterium Erwinia amylovora in Washington and Oregon

Creator:: Carey, Alyssa B.
Abstract:: Erwinia amylovora is a plant pathogenic bacterium that causes the destructive disease fire blight of apple and pear. We examined the plasmid content of a collection of 305 isolates of E. amylovora from Washington and Oregon with PCR assays and RFLP. Nearly all isolates of E. amylovora carried plasmid pEA29,...
Resource Type:: Honors College Thesis
Full Text:: . Alyssa B. Carey, Author Acknowledgements I would like to thank Dr. Virginia Stockwell for

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:: . Acknowledgments I would like to thank Virginia Stockwell for all the guidance and support that she has

Contribution of native plasmids to fitness of Pantoea vagans C9-1, a biological control agent for fire blight of apple and pear

Creator:: Klein, Jeannie M.
Abstract:: Pantoea vagans C9-1 (C9-1) is a biological control agent sprayed onto apple and pear trees during bloom for suppression of fire blight, a devastating bacterial disease caused by Erwinia amylovora. Prior bioinformatics studies of C9-1 focused on predicted phenotypes associated with the three native megaplasmids, pPag1, pPag2, and pPag3, and...
Resource Type:: Honors College Thesis
Full Text:: : _____________________________________________ Virginia O. Stockwell Pantoea vagans C9-1 (C9-1) is a biological control agent sprayed

Effect of iron on biological control of fire blight by Pseudomonas fluorescens A506

Creator:: Temple, Todd N.
Abstract:: Competitive exclusion has been the mechanism hypothesized to account for the biological control of fire blight disease of pear and apple by the bacterium Pseudomonas fluorescens A506 (A506). Recent laboratory assays demonstrated, however, that A506 produces an antibiotic that is toxic to the fire blight pathogen, Erwinia amylovora, when cultured...
Resource Type:: Masters Thesis
Full Text:: with laboratory work, I thank Virginia Stockwell, Joyce Loper, Teresa Sawyer, Nancy Chaney, Marcella

Enhancement of thiamin in plants by metabolic engineering

Creator:: Dong, Wei, Stockwell, Virginia O., and Goyer, Aymeric
Abstract:: Thiamin is an essential nutrient in the human diet. Severe thiamin deficiency leads to beriberi, a lethal disease which is common in developing countries. Thiamin biofortification of staple food crops is a possible strategy to alleviate thiamin deficiency-related diseases. In plants, thiamin plays a role in the response to abiotic...
Resource Type:: Article
Full Text:: , Virginia O. Stockwell1, and Aymeric Goyer1,2 Authors’ addresses: 1Department of Botany and Plant

Analysis of boscalid resistance of isolates of Botrytis cinerea

Creator:: Villanueva, Brenda
Abstract:: Succinate dehydrogenase (Sdh) inhibitor fungicides, such as boscalid, are effective for the management of gray mold caused by the fungal pathogen Botrytis cinerea. Unfortunately, resistance to boscalid was common among isolates of the pathogen from small fruits grown in Oregon. Boscalid-resistance is commonly associated with mutations in Sdh, especially in...
Resource Type:: Undergraduate Thesis
Full Text:: ). Acknowledgements Sincere thanks to Gayle McGhee and Virginia Stockwell of the USDA, Agricultural Research Service

Screening Cotoneaster for Resistance to Fire Blight by Artificial Inoculation

Creator:: Rothleutner, Joseph J., Contreras, Ryan N., Stockwell, Virginia O., and Owen, James S.
Abstract:: Cotoneaster is a genus of ornamental landscape plants commonly affected by fire blight. Fire blight is a disease caused by the bacterial pathogen, Erwinia amylovora (Burrill) Winslow et al. that attacks a wide range of taxa in the apple subfamily (Maloideae; Rosaceae). To assess susceptibility of species and identify potential...
Resource Type:: Article
Full Text:: Inoculation Rothleutner, J. J., Contreras, R. N., Stockwell, V. O., & Owen, J. S. (2014). Screening

Characterization and Cultivar Susceptibility Assessment of Bacterial Blight in Hazelnut Caused by Xanthomonas arboricola pv. corylina

Creator:: Webber, John B., III
Abstract:: Bacterial blight (Xanthomonas arboricola pv. corylina) (Xac) of hazelnut (Corylus avellana L.) was described first in Oregon in 1915 and is now recognized as a damaging disease of young hazelnut trees worldwide. Stressed hazelnut trees in conditions such as planting on marginal sites, and trees between 1 and 4-years-old are...
Resource Type:: Masters Thesis
Full Text:: from my committee chair Nik Wiman and my graduate committee members Virginia Stockwell, Jay

Improving initiation and mineral nutrition for hazelnut (Corylus avellana) micropropagation

Creator:: Hand, Charles R.
Abstract:: Corylus avellana L. is a global commodity and a valuable crop for the U.S. Pacific Northwest. A tremendous amount of work has been put into the development of healthy disease free, high yielding and tasty hazelnuts for the in-shell and confectionary markets. Clonal propagation is required to provide nursery trees...
Resource Type:: Masters Thesis
Full Text:: my committee including Dr. Shawn Mehlenbacher, Dr. Virginia Stockwell, and Professor Mike Gamroth

ScholarsArchive@OSU

Tumorigenic bacteria from blueberry stem galls are related to Rhizobium tumorigenes-like Agrobacteria found in Rhododendron crown gall in Germany

Characterization of the Plasmids of the Pathogenic Plant Bacterium Erwinia amylovora in Washington and Oregon

Induction of apple defense genes by Erwinia amylovora and biological control agents

Contribution of native plasmids to fitness of Pantoea vagans C9-1, a biological control agent for fire blight of apple and pear

Effect of iron on biological control of fire blight by Pseudomonas fluorescens A506

Enhancement of thiamin in plants by metabolic engineering

Analysis of boscalid resistance of isolates of Botrytis cinerea

Screening Cotoneaster for Resistance to Fire Blight by Artificial Inoculation

Characterization and Cultivar Susceptibility Assessment of Bacterial Blight in Hazelnut Caused by Xanthomonas arboricola pv. corylina

Improving initiation and mineral nutrition for hazelnut (Corylus avellana) micropropagation

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