Index Catalog // ScholarsArchive@OSU

Genome-enabled investigation of the minimal growth requirements andphosphate metabolism for Pelagibacter marine bacteria

Creator:: Carini, Paul J.
Abstract:: Members of the SAR11 clade of heterotrophic α-proteobacteria are ubiquitous and abundant in the world's oceans where they are thought to play a pivotal role in the global carbon cycle. The first SAR11 bacterium cultivated in vitro, 'Candidatus Pelagibacter ubique' HTCC1062 (Ca. P. ubique), was isolated by dilution into sterile...
Resource Type:: Dissertation

Microbial diversity, metabolic potential, and transcriptional activity along the inner continental shelf of the Northeast Pacific Ocean

Creator:: Bertagnolli, Anthony D.
Abstract:: Continental shelves located along eastern boundary currents occupy relatively small volumes of the world’s oceans, yet are responsible for a large proportion of global primary production. The Oregon coast is among these ecosystems. Recent analyses of dissolved oxygen at shallow depths in the water column has suggested increasing episodes of...
Resource Type:: Dissertation
Full Text:: . Giovannoni, Dr. Peter J. Bottomley, Dr. Frederick Cowell, Dr. Allen Milligan and Dr. Kaichang Li Past and

Bacterial Predation in Host Microbiomes

Creator:: Welsh, Rory M.
Abstract:: In host-associated microbiomes, the mechanisms that regulate community composition or the principles that govern dynamics remain far from clear. However, understanding how the structure of microbial communities shift as the system moves away from a healthy state is critical to assessing disease progression and to formulate any potential mitigation strategy....
Resource Type:: Dissertation
Full Text:: members Drs. Dan Rockey, Martin Schuster, Steve Giovannoni, and Allen Milligan for guidance, support

Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

Creator:: Collart, Lindsay P.
Abstract:: Toxin production by cyanobacterial harmful algal blooms (cyanoHABs) in freshwater systems has lasting ecological and human impacts. Nutrients, light availability, hydrology, and microbial community composition impact the frequency and intensity of toxic cyanoHABs. Climate change will exacerbate toxic cyanoHABs, making real time and predictive monitoring a vital tool for managing...
Resource Type:: Dissertation

Metagenomics: Microbial diversity through a scratched lens

Creator:: Temperton, Ben and Giovannoni, Stephen J.
Abstract:: Since nucleic acids were first extracted directly from the environment and sequenced, metagenomics has grown to one of the most data-rich and pervasive techniques for understanding the taxonomic and functional diversity of microbial communities. In the last decade, cheaper sequencing has democratized the application of metagenomics and generated billions of...
Resource Type:: Article
Full Text:: possible by the long read lengths generated with BAC 334 clones. 335 336 **9. Gilbert JA, Dupont CL

The Genome of Pseudomonas fluorescens Strain R124 Demonstrates Phenotypic Adaptation to the Mineral Environment

Creator:: Barton, Michael D., Petronio, Michael, Giarrizzo, Juan G., Bowling, Bethany V., and Barton, Hazel A.
Abstract:: Microbial adaptation to environmental conditions is a complex process, including acquisition of positive traits through horizontal gene transfer or the modification of existing genes through duplication and/or mutation. In this study, we examined the adaptation of a Pseudomonas fluorescens isolate (R124) from the nutrient-limited mineral environment of a silica cave...
Resource Type:: Article

Characterization of an immunoreactive region of the major capsid protein for infectious pancreatic necrosis virus

Creator:: Barrie, Rosemary Jean
Abstract:: DNA fragments of the gene for VP2, the major capsid protein of Infectious Pancreatic Necrosis Virus (IPNV), were expressed in Escherichia coli and characterized immunologically with antisera made to different serotypes of IPNV. The entire VP2 gene was excised from the plasmid pUC19/A+SΔK and fragmented with restriction enzyme Sau3A1. The...
Resource Type:: Masters Thesis
Full Text:: analysis (Allen, 1980). In some cases further purification of the virus was performed by layering virus on

Quorum sensing gene regulation in Pseudomonas aeruginosa

Creator:: Gupta, Rashmi
Abstract:: Pseudomonas aeruginosa is an opportunistic human pathogen that infects immunocompromised individuals such as those suffering from burns or the genetic disorder cystic fibrosis. This organism utilizes a cell-cell communication mechanism known as quorum sensing (QS) to coordinate virulence gene expression and biofilm formation. It has three interconnected QS systems, namely...
Resource Type:: Dissertation
Full Text:: targets of LasR (Gilbert et al., 2009). Non-acyl-HSL QS Signaling by the PQS system is mediated

The Social Interactions of Pseudomonas aeruginosa

Creator:: Smith, Parker
Abstract:: Pseudomonas aeruginosa is a ubiquitous environmental microbe, opportunistic pathogen, and a highly social organism. P. aeruginosa utilizes a wide array of cooperative behaviors to adapt to the environmental conditions around it. These behaviors include quorum sensing (QS), a form a cell-to-cell signaling that coordinates the expression of secreted products in...
Resource Type:: Dissertation
Full Text:: that specifically inhibit the production of public virulence factors. Further reading Allen, R.C

Effects of disturbance scale on soil microbial communities in the Western Cascades of Oregon

Creator:: Kageyama, Stacie A., Posavatz, Nancy R., Jones, Sarah S., Waterstripe, Kirk E., Bottomley, Peter J., Cromack Jr., Kermit, and Myrold, David D.
Abstract:: To gain a better understanding of how rapidly microbial communities respond to different magnitudes of perturbation that mimic minor or catastrophic disturbances. Two montane sites in the western Cascade Mountains of Oregon with adjacent areas of forest and meadow vegetation were studied. A reciprocal transplant experiment evaluated both minor (soil...
Resource Type:: Article
Full Text:: , Owens SM, Betley J, Fraser L, Bauer M, Gormley N, Gilbert JA, Smith G, Knight R (2012) Ultra- high

ScholarsArchive@OSU

Genome-enabled investigation of the minimal growth requirements andphosphate metabolism for Pelagibacter marine bacteria

Microbial diversity, metabolic potential, and transcriptional activity along the inner continental shelf of the Northeast Pacific Ocean

Bacterial Predation in Host Microbiomes

Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

Metagenomics: Microbial diversity through a scratched lens

The Genome of Pseudomonas fluorescens Strain R124 Demonstrates Phenotypic Adaptation to the Mineral Environment

Characterization of an immunoreactive region of the major capsid protein for infectious pancreatic necrosis virus

Quorum sensing gene regulation in Pseudomonas aeruginosa

The Social Interactions of Pseudomonas aeruginosa

Effects of disturbance scale on soil microbial communities in the Western Cascades of Oregon

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