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  • Bacterial community analysis, new exoelectrogen isolation and enhanced performance of microbial electrochemical systems using nano-decorated anodes

    Creator:
    Xu, Shoutao
    Abstract:
    Microbial electrochemical systems (MESs) have attracted much research attention in recent years due to their promising applications in renewable energy generation, bioremediation, and wastewater treatment. In a MES, microorganisms interact with electrodes via electrons, catalyzing oxidation and reduction reactions at the anode and the cathode. The bacterial community of a...
    Resource Type:
    Dissertation
    Full Text:
    requires an understanding of the ecology in microbial communities of MFCs. Many researchers have

  • 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:
    ecology of microorganisms and host-associated microbiomes. Host-associated microbial community dynamics

  • 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
    Full Text:
    .......................................................................................... 1 The foundations of microbial ecology

  • Investigation of unique marine environments for microbial natural products

    Creator:
    Thornburg, Christopher C.
    Abstract:
    Metagenomics has revealed that the marine microbial biosphere is immensely more diverse than originally considered, and is an almost untapped reservoir for the potential discovery of microbial natural products. Despite numerous advances in culturing, biosynthetic engineering and genomic-based screening efforts to uncover much of this diversity in relatively accessible environments,...
    Resource Type:
    Dissertation
    Full Text:
    Microbial Natural Products Abstract approved: Kerry L. McPhail Metagenomics has revealed that the

  • Comparative genomics of Vibrio and characterizing microbial communities at a shellfish hatchery

    Creator:
    Delgado, Hanna
    Abstract:
    Vibrio bacteria are commonly found in freshwater, marine, and estuarine environments. Members of this genus can exist in commensal relationships with marine animals or as planktonic bacteria, however, they are well known for their roles as pathogens towards humans and animals. In this dissertation, I investigated aspects of host-bacteria relationships...
    Resource Type:
    Dissertation
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    November 6, 2020 Title: Comparative Genomics of Vibrio and Characterizing Microbial Communities at a

  • Identification and characterization of type III effector proteins in plant-associated bacteria

    Creator:
    Thomas, William J.
    Abstract:
    Symbioses between microbes and multicellular eukaryotes are found in all biomes, and encompass a spectrum of symbiotic lifestyles that includes parasitism and disease, commensalism, and mutually beneficial interdependent host-microbe relationships. Regardless of outcome, these symbiotic lifestyles are governed by a complex molecular "courtship" between microbe and potential host. This courtship...
    Resource Type:
    Dissertation
    Full Text:
    majority of microbial suitors will be thwarted by it. Only by successfully “wooing” the host cell’s

  • Biotransformation of 2,4,6-trinitrotoluene by ruminal organisms

    Creator:
    De Lorme, Marthah J. M.
    Abstract:
    2,4,6-Trinitrotoluene (TNT) has been the common munitions used in the world and is an environmental contaminant that is amendable to reductive transformation reactions. The rumen is an extremely reductive environment containing diverse microbial populations. There are 21 pure culture ruminal bacteria species in culture collection, these were tested for the...
    Resource Type:
    Dissertation
    Full Text:
    containing diverse microbial populations. There are 21 pure culture ruminal bacteria species in culture

  • Construction of a model organism for performing calcium carbonate precipitation in a porous media reactor

    Creator:
    Kaufman, Megan J.
    Abstract:
    Aquifers are an important storage location and source of fresh groundwater. They may become polluted by a number of contaminants including mobile divalent radionuclides such as strontium-90 which is a byproduct of uranium fission. A method for remediating such divalent radionuclides is sequestration through co-precipitation into calcium carbonate. Calcium carbonate...
    Resource Type:
    Masters Thesis
    Full Text:
    ureolytic microorganisms living within the aquifer. The microbial enzyme urease cleaves ammonia from urea

  • 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:
    of diverse groups of microbial siderophores, sulfur-esters, and other substrates were assigned to

  • Evaluation of the colonization and biofilm production by Burkholderia pyroccinia FP62 on geranium leaves

    Creator:
    Wallace, Patricia K.
    Abstract:
    The leaf surface is a stark environment for bacterial colonists with limited availability of nutrients, water and protected niches. Despite these limitations, a plethora of bacteria appear to have adapted ways to survive and flourish on leaf surfaces. One mechanism of survival is the formation of biofilms. Biofilms are a...
    Resource Type:
    Masters Thesis
    Full Text:
    General Introduction A biofilm, simply defined, is a consortium or aggregate of microbial cells