Browsing by Author "Liles, Mark"

Now showing items 21-40 of 48

Exploring the Relation Between Plant Phosphorus Nutrition and Growth Promotion by Bacillus subtilis/amyloliquefaciens Strains

Ramirez, Camilo A. (2010-08-02)

The use of plant growth-promoting rhizobacteria (PGPR) as biofertilizers is of increasing interest due to economic and environmental issues. Phosphorus (P) is one of the most limiting plant nutrients because of its reduced ...

From drones to Daphnia: Exploring eutrophication and climate change impacts on algal blooms at various scales

FERNANDEZ-FIGUEROA, EDNA G. (2021-04-19)

Climactic variations and cultural eutrophication alter aquatic ecosystems by promoting harmful algal blooms (HABs) that destabilize aquatic food webs and degrade the quality and safety of aquacultured fish, recreational ...

Functional Genomics of Soil Bacteria using a Metagenomics Approach

Kakirde, Kavita (2012-07-31)

Soil microbial communities are an abundant resource for natural product discovery. Traditional methods such as cultivation of soil microorganisms from soil under laboratory conditions have lead to discovery of new compounds ...

Identification and Characterization of Molecular Correlates of Disease in Invasive Streptococcus and Staphylococcus Infection Models

Davis, Richard IV (2015-07-29)

Invasion into the host vasculature marks a dangerous, and often times fatal, complication of bacterial infections. One such severely invasive bacterium, Streptococcus pyogenes, is estimated to affect 18 million people ...

Identification of novel biosynthetic gene clusters and bacterial taxa from a soil microbiome using metagenomic approaches

Pereira, Alinne (2021-04-21)

The microbial world is home to incredible taxonomic and metabolic diversity. Microorganisms are prolific producers of secondary metabolites, which are an important source of bioactive compounds, namely antibiotics, which ...

Improving Drought Stress Tolerance of Peanut Using PGPR and Orange Peel Amendment

Bagwell, John (2020-07-31)

Peanut provides approximately $4 billion to the US economy. Drought lowers that amount with disease and nutrition and yield loss. Due to a rising global population, less water will be available for agriculture. Inoculating ...

The Inflamed Gut: An Integrative Approach to Understanding the Impact of Inflammation on Bacteriophage-Host Dynamics.

Higgins, Keah (2020-05-15)

The intestinal microbiome is a diverse and dynamic microbial ecosystem residing within the gastrointestinal tract. The mammalian intestine is home to both commensal and opportunistic pathogenic microorganisms. The immune ...

The influence of environmental variation on the microbiome during early-life stages in reptiles

Murphy, Kaitlyn (2023-07-24) ETD File Embargoed

My dissertation research seeks to understand how environmental variation, including maternal effects, might influence the microbiome of reptiles and how those differences translate to phenotypic variation. My research ...

Interaction of Chromobacterium species with Batrachochytrium dendrobatidis at different Temperatures

Akinkuotu, Rita (2019-07-23)

Chytrid fungus, Batrachochytrium dendrobatidis (Bd) has been identified as one of the major culprits in amphibian population declines worldwide. This fungus grows upon and colonizes the keratin layer of the amphibian skin. ...

Isolation and Characterization of Bacillus spp. as Potential Probiotics for Channel Catfish, Ictalurus punctatus

Ran, Chao (2013-07-18)

Enteric septicemia of catfish (ESC), caused by the bacterium Edwardsiella ictaluri, is considered the most important bacterial disease of cultured channel catfish Ictalurus punctatus and is estimated to cost the industry ...

Microbial Implication of Iron Oxide Nanoparticles

Starr, Kimberly (2010-05-12)

Magnetite nanoparticles (Fe3O4) designed for remediation will be intentionally released into the environment; however, little is known regarding their impact on bacterial populations. Research was conducted to 1) investigate ...

Molecular Interactions between phage and the catfish pathogen Edwardsiella ictaluri and Comparative Genomics of Epidemic strains of Aeromonas hydrophila

Hossain, Mohammad (2012-12-05)

Edwardsiella ictaluri causes Enteric Septicemia of Catfish (ESC) which is responsible for significant economic loss of the catfish aquaculture industry in the southeastern United States. A better diagnostic tool is required ...

Molecular phylogenetic characterization of microbial community dynamics associated with freshwater stream environmental organic matter sources

Newman, Molli (2011-11-30)

The effects of various biotic and abiotic factors on microbial community dynamics during leaf breakdown were assessed through a series of in situ leaf breakdown studies within the Fort Benning Military Installation (FBMI), ...

Navigating the Complexities of Disease Prevention, Alternative Treatments, and Multi-Drug Resistant Rhodococcus equi Mitigation Strategies

Higgins, Courtney (2023-07-28) ETD File Embargoed

The opportunistic pathogen, Rhodococcus equi, is a robust soil saprophyte present in the environment of horse-breeding farms and an important cause of pulmonary disease in foals at endemic farms. As an effort to prevent ...

The Phage Behind the Curtain: Determining the Role of Bacteriophage in the Restructuring of Microbiomes During Disease

Hallowell, Haley (2021-11-30)

The gut microbiome is a dynamic microbial ecosystem inhabited by all domains of life and is essential for the homeostatic function of almost all organ systems within the host. Additionally, the mammalian intestine is home ...

Polyketide Synthase Pathway Discovery from Soil Metagenomic Libraries

Goode, Ann (2009-07-21)

Polyketides are structurally diverse bacterial secondary metabolites, many of which have antibiotic or anti-cancer activity. Modular polyketide synthase (PKS) enzymatic complexes contain conserved ketoacyl synthase (KS) ...

Prevention of disease due to hypervirulent Aeromonas hydrophila (vAh) and a global survey of vAh in farmed fish

Xu, Tingbi (2023-04-13) ETD File Embargoed

This dissertation documents research focusing on hypervirulent Aeromonas hydrophila (vAh) regarding its geographical distribution, potential transmission among freshwater fish species, vaccine control, and probiotic control. ...

Rapid Wound Repair in the Ctenophore Mnemiopsis spp.

Dodson, Matthew (2010-11-04)

The ability to quickly and efficiently close a wound is an integral part of any organism’s ability to survive. Marine organisms are exposed to numerous environmental pressures that demand the need for a rapid repair ...

The Role of Pectin Utilization in Root Colonization and Plant Growth-Promotion by Bacillus amyloliquefaciens subsp. plantarum (Bap)

Hassan, Mohammad (2016-07-26)

Plant growth-promoting rhizobacteria (PGPR) and other beneficial bacteria are increasingly used as biofertilizers for enhancing crop production. After PGPR-treated seeds are planted, root colonization is considered to be ...

Selecting Plant Growth-Promoting Rhizobacteria (PGPR) for Both Biological Control of Multiple Plant Diseases and Plant Growth Promotion in the Presence of Pathogens

Liu, Ke (2015-07-29)

A study was conducted to select PGPR strains for broad-spectrum disease suppression and growth promotion in the presence of plant pathogens. First, 198 strains were tested for antibiosis capacity against nine different ...