Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"Bacterial Interactions"”.
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Bacterial interactions and enzyme kinetics in environmental polyester degradation
Plastic waste accumulation in the environment is a global concern. With production of these materials projected to increase, strategies to enhance polymer degradability in natural systems are necessary to reduce their environmental accumulation. In this dissertation, the environmental …
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A computational biology approach to studying algae-bacterial interactions
… this thesis is based on a model system for algae-bacterial interactions made up of the green alga, Lobomonas rostrata and the alpha-proteobacterium Mesorhizobium loti. In the model system, it is known that the bacterium provides vitamin B12 to the alga and itself, whilst the alga provides fixed …
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Impact of free living protozoa and bacterial interactions on multispecies biofilms
Interactions between bacteria belonging to different species are vital for the development of complex microbial communities, including multispecies biofilm. Multispecies biofilms are ubiquitous in most natural and man-made environments; their presence is now subject to ever-increasing attention. …
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Environmental and Biotic Drivers of Seaweed–Bacterial Interactions: Insights into the Seaweed Holobiont
… Host fitness is reliant on this symbiosis, with interactions from epiphytic bacteria necessary for the correct physiological functioning, health, development, and resilience of the seaweed. As seaweeds provide a plethora of ecosystem services and commercial benefits, understanding these …
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Algal and bacterial interactions in producing precursors of trihalomethanes and other halogenated organics
… varied to study different aspects of algal and bacterial interactions. Results from continuous light assays indicated that heterotrophs, grown in the same culture vessel with algae, affected an increase in the potential of chlorinated culture filtrate to form THMs. No significant changes in …
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Bacterial Interactions of Inoculated Price's Potato Bean (<i>APIOS PRICEANA</i>): A Biological Study
<p><em>Apios priceana</em> is a native endangered species plant found in the Southeast United States. It is characterized as a leguminous species that bears wisteria like clusters with pea like flowers, a large tuberous root and four to six inch long seed pods. It is believed the Native Americans …
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Investigation of mechanisms underpinning host-microbial interactions in the gastrointestinal tract
… of a host, only the role of some of the bacterial members has been addressed in these contexts. Thus the aim of this thesis research was to investigate and further understand the molecular and cellular mechanisms underpinning host-bacterial interactions in both the gastrointestinal tract …
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Interactions between calanoid copepod hosts and their associated microbiota
… highly abundant environmental reservoirs of many bacterial pathogens. This thesis investigates whether copepod physiology influences the abundance and community structure of its microbiome. To this end, we first examined the ability of the oceanic copepod Calanus finmarchicus to transcriptionally …
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Bacterial Interspecies Interactions and Microbial Community Assembly
… in nanoliter droplets show a wide occurrence of bacterial interactions in the form of one species or consortium affecting the abundance and yield of another species. Positive and negative interactions appear unavoidable in bacterial co-cultures when growth is permitted, with growing bacteria …
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Bacterial biofilms and biomineralisation on titanium
This study investigated bacterial interactions with titanium, and evaluated the use of Serratia biomineralisation to produce a hydroxyapatite (HA) coating on titanium. Adherence of Gram-positive Staphylococcus epidermidis and Streptococcus sanguinis and Gram-negative Serratia sp. NCIMB 40259 and …
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An Insight Into the Microbial Diversity and Expression of Cysteine Protease Inhibitors (Cystatin) in <i>Rickettsia parkeri</i> Infected <i>Amblyomma maculatum</i>
… approach to further study all possible bacterial diversity residing in field collected <em>A. maculatum</em>. The huge bacterial profiling in <em>A. maculatum</em> provided the basis of Amblyomma-bacterial interactions particularly in relation to <em>R. parkeri</em>. On the other side, …
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The effects of elevated CO2 and ocean acidification on the production of marine biogenic trace gases
… the Baltic Sea, known for its low-salinity, cyanobacterial dominated community, where DMS concentrations showed an 80% reduction under high pCO2 but halocarbon concentrations were unaffected. No decrease in DMS or DMSP concentrations were identified in high pCO2 laboratory cultures of the …
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Toward the augmentation of rumen fermentation: Deciphering microbial dynamics
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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The effect of e-liquids and electronic cigarette vapour extract (ECVE) on key respiratory pathogens
… study have shown that neat e-liquids can reduce bacterial viability with particular flavours causing significant reductions in bacterial viability. It was found that e-liquids contained numerous chemical compounds some of which had antimicrobial properties. The greater the number of chemical …
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Interactions between calanoid copepod hosts and their associated microbiota
… highly abundant environmental reservoirs of many bacterial pathogens. Although copepods are known to support diverse and productive bacterial communities, little is understood about whether copepods are affected by bacterial attachment and whether they can regulate these associations through …
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Insights Into The Reactivation, Regulation and Essentiality of Oxidative Protein Folding Pathways In Actinobacteria
… pathways influence processes essential for bacterial physiology and pathogenicity. In the Gram-positive actinobacterial pathogens <em>Actinomyces oris </em>and <em>Corynebacterium diphtheriae</em> oxidative protein folding is catalyzed by the primary thiol-disulfide oxidoreductase MdbA. MdbA …
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Antioxidants and natural anti-cancer agents in the large bowel and the influence of intestinal microbial fermentation.
… development of a chemostat designed to simulate bacterial interactions that occur in the large bowel using porcine faeces and dissolved oxygen at concentrations within the range detected in the large bowel. This demonstrated the effects of antioxidants and oxygen on intestinal bacteria using …
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Biochemistry and functional analysis of exopolysaccharide production in Lactobacillus johnsonii
… industry but they also play critical role in bacterial interactions during colonisation of the gastrointestinal tract. The role of this layer in the virulence of pathogenic bacteria has been well described but the biological importance of the EPS layer of probiotic bacteria have not been …
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Bistability, Synthetic Biology, and Antibiotic Treatment
… </p><p>Here, I study emergent bistability due to bacterial interactions with either synthetic gene circuits or antibiotics. A synthetic gene circuit is often engineered by considering the host cell as an invariable "chassis". Circuit activation, however, may modulate host physiology, which in turn …
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Specialised Effectors and Accessory Proteins Important in the Antibacterial Type VI Secretion System of <i>Serratia marcescens</i>
… bacteria is protein secretion, with bacterial secretion systems efficiently translocating particular proteins to the external medium or directly into competitor target cells. Recently, much progress has been made towards understanding the role and mechanism of the Type VI secretion …
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