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Dissertations / Theses on the topic 'Associated bacteria'

Author: Grafiati

Published: 25 May 2024

Last updated: 25 July 2025

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1

Rooks, Michelle Gabrielle. "Microbiome-Targeted Interventions for Colitis-Associated Bacteria." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493456.

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Complex interactions between mammalian hosts and their gut microbes have evolved over many millennia and have established a sophisticated communication system that is essential for symbiosis and mutualism. Perturbations to host-microbiota homeostasis in the context of a genetically susceptible host are central to the development of inflammatory bowel disease (IBD). In-depth understanding of the underlying mechanisms that control homeostasis and dysbiosis are essential for determining how to reliably modulate the host-microbiota continuum to prevent and treat disease. However, deciphering wheth

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Savio, Claudia. "Symbiotic and associated bacteria in Tephritid flies." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427445.

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The Tephritidae family, commonly known as “fruit flies”, is a large Dipteran family. It includes many notorious agricultural pests, as the olive fly (Bactrocera oleae), the cherry fruit fly (Rhagoletis cerasi) and the walnut husk fly (R. completa). The importance of bacteria in the life history of fruit flies is well-known. In the beginning of last century Petri (1909) was the first to report the presence of symbiotic bacteria within the olive fruit fly (Bactrocera oleae); recently it was designated as “Candidatus Erwinia dacicola”. In Tephritids flies, the bacteria are housed in the midgut a

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3

Alvarez, Julia D. "Studies on Venezuelan fish and shrimp associated bacteria." Thesis, Heriot-Watt University, 1998. http://hdl.handle.net/10399/619.

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4

Slabbert, Róan Stephanus. "Evaluation of acid resistance in food-associated bacteria." Thesis, Bloemfontein : Central University of Technology, Free State, 2011. http://hdl.handle.net/11462/147.

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Thesis (M. Tech. Environmental health) -- Central University of technology, Free State, 2011<br>Although the application of low pH is common practice in food preservation, the emergence of acid tolerance has been reported world-wide amidst a growing concern that preservation with weak acids, such as organic acids may be influenced as a result of food-borne bacteria becoming acid tolerant or acid resistant. The present study was conducted to assess the acid tolerance of a wide range of bacterial species and consequently the sustainable application of organic acids as food preservatives in part

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5

Tyler, Heather Lee. "Plant-associated bacteria biological, genomic, and metagenomic studies /." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041068.

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6

Bharadwaj, Dharam Parkash. "The plant - arbuscular mycorrhizal fungi - bacteria - pathogen system : multifunctional role of AMF spore-associated bacteria /." Uppsala : Dept, of Forest Mycology and Pathology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200790.pdf.

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Cuschieri, Katie Sarah. "Species diversity of aggregate-associated marine ammonia-oxidising bacteria." Thesis, University of Aberdeen, 2000. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU602054.

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Two broad communities can be distinguished in marine systems, those attached to amorphous aggregate material dispersed throughout the water column and those that are freely suspended in the water column (planktonic). It has been suggested that two distinct microbial populations are associated with each habitat due to phenotypic adaptation to the different conditions in aggregates and the surrounding water. The aim of this study was to investigate the diversity of aggregate-associated and planktonic marine ammonia oxidisers (AOBs - the organisms responsible for the rate limiting step in nitrifi

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8

Ridsdale, Carmen Jane. "Interactions of arbuscular mycorrhizal fungi and spore-associated bacteria." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1018269.

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Arbuscular mycorrhizal (AM) fungi are naturally occurring in roots of terrestrial plants. AM fungi are capable of benefiting the host plant through various mechanisms such as enhanced nutrient supply, alleviation of environmental stress and inhibition of plant fungal pathogens. AM fungal spore-associated bacteria have been previously isolated and shown to have plant growthpromoting (PGP) abilities by several authors. Some bacterial isolates are able to promote AM fungal colonisation of host plants and are known to be mycorrhizal helper bacteria (MHB). This study focused on the isolation of AM

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Fandino, Laura B. "Molecular ecology of bacteria associated with marine phytoplankton blooms /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2002. http://wwwlib.umi.com/cr/ucsd/fullcit?p3064445.

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10

Ye, Jingxiao. "Intestinal bacteria associated with colitis and inflammatory bowel disease." Diss., [Riverside, Calif.] : University of California, Riverside, 2009. http://proquest.umi.com/pqdweb?index=0&did=1957340931&SrchMode=2&sid=2&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1269024239&clientId=48051.

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Thesis (Ph. D.)--University of California, Riverside, 2009.<br>Includes abstract. Available via ProQuest Digital Dissertations. Title from first page of PDF file (viewed March 20, 2010). Includes bibliographical references. Also issued in print.

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Erwin, Patrick M. "Characterization, community structure and ecological importance of sponge-associated bacteria." Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2008r/erwin.pdf.

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Thesis (Ph. D.)--University of Alabama at Birmingham, 2007.<br>Additional advisors: Asim K. Bej, James B. McClintock, Julie B. Olson, Marc Slattery. Description based on contents viewed June 11, 2008; title from title screen. Includes bibliographical references.

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12

Liu, Oscar H. "RNAseq Analysis of Gastric Bacteria in Helicobacter pylori-Associated Carcinogenesis." Thesis, Högskolan i Skövde, Institutionen för biovetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-9937.

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Helicobacter pylori infects more than half of the world's population, and is known to be involved in several diseases including gastric cancer. Its close interactions with the stomach and host immune system serves as a good model to study the co-adaptation and co-evolution of the organisms in the stomach micro-environment. In this project, we utilized RNA-seq and data analysis tools to investigate differentially expressed genes by H. pylori in patients at different stages of early gastric cancer development. We also investigated the abundance and diversity of bacterial genera other than H. pyl

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13

KoÌˆmerik, NurguÌˆl. "Susceptibility of mucositis-associated Gram-negative bacteria to photodynamic action." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401728.

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14

Axelsson, Karolin. "Chemical signals in interactions between Hylobius abietis and associated bacteria." Doctoral thesis, KTH, Organisk kemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187817.

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The pine weevil (Hylobius abietis L.) is one of the two topmost economically important insect pests in Swedish conifer forests. The damage increase in areas were the silvicultural practice is to use clear cuttings were the insects gather and breed. During egglaying the female protects her offspring by creating a cave in roots and stumps were she puts her egg and covers it with frass, a mixture of weevil feces and chewed bark. Adult pine weevils have been observed to feed on the other side of the egg laying site and antifeedant substance has been discovered in the feces of the pine weevil. We t

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Altabtbaei, Khaled. "METAGENOMIC ANALYSIS OF PERIODONTAL BACTERIA ASSOCIATED WITH GENERALIZED AGGRESSIVE PERIODONTITIS." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1466590877.

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Bae, Sung Sook School of Chemical Engineering &amp Industrial Chemistry UNSW. "Investigation of bacteria associated with Australian wine grapes using cultural and molecular methods." Awarded by:University of New South Wales. School of Chemical Engineering and Industrial Chemistry, 2005. http://handle.unsw.edu.au/1959.4/23348.

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This thesis presents a systematic investigation of bacterial species associated with wine grapes cultivated in Australian vineyards during 2001-2004. Grapes, sampled throughout cultivation, were analysed for bacterial species using a combination of cultural and molecular methods. Red (Shiraz, Cabernet Sauvignon, Merlot) and white (Chardonnay, Semillon, Sauvignon Blanc) grape varieties were examined. Factors affecting the bacterial ecology of grapes were considered. The bacterial populations of mature undamaged grapes at harvest were consistently low at 102-103 CFU/g. Higher populations (103-10

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Pieterse, Reneé. "Control of bacterial pathogens associated with mastitis in dairy cows with natural antimicrobial peptides produced by lactic acid bacteria /." Link to the online version, 2008. http://hdl.handle.net/10019/891.

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18

Roselló, Prados Gemma. "Characterization and improvement of plant-associated Lactobacillus plantarum. Novel biocontrol agent for fire blight disease." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/403404.

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Fire blight is a disease caused by Erwinia amylovora. For the limited effectiveness of copper products and the new regulations for the sustainable use of pesticides, biological control is considered a good alternative for the control of fire blight. Therefore, this thesis focuses on the research of lactic acid bacteria strains as biocontrol agents of fire blight. Three out of one hundred strains, which were identified as Lactobacillus plantarum TC54, TC92 and PM411, were selected by their ability to inhibit E. amylovora infections in different performed assays. A multivariate statistical analy

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Kumar, Purnima. "Molecular analysis of bacteria associated with chronic periodontitis and periodontal health." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1124221576.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains x, 104 p.; also includes graphics (some col.). Includes bibliographical references (p. 92-104). Available online via OhioLINK's ETD Center

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Bacchetti, de Gregoris Tristano. "Studies on the acorn barnacle Balanus amphitrite and its associated bacteria." Thesis, University of Newcastle Upon Tyne, 2011. http://hdl.handle.net/10443/1238.

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Despite being a model organism to study settlement in marine invertebrates, little is known about the genetics of the barnacle Balanus amphitrite. To fill this gap, cDNA libraries representative of different developmental stages were generated and sequenced. Nearly 14,000 genes were annotated, which may represent 2/3 of the species’ total protein coding regions. The database that was created to allow public access to this genetic information will profoundly benefit future research aiming to understand the molecular regulation of development and settlement in this species. Furthermore, a quanti

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Xiujie, Luan. "Study of the bacteria associated with exacerbation of late-onset asthma." Thesis, University of Derby, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323640.

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22

Barke, Joerg. "Antifungals of acromyrmex, allomerus, and tetraponera ant- and cultivar-associated bacteria." Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/47859/.

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The central purpose of this thesis is to test the utility of ant-microbe associations for discovering antifungal compounds with novel molecular (sub-) structures. Novel antifungals displaying reduced adverse side-effects, increased water-solubilities, and/or strong fungicidal properties would be helpful in medical science for responding to the rising prevalence of human mycoses and for solving problems with adverse side-effects in currently used antifungal drugs. Host-symbiont systems may represent a source of bacterial species that, due to their co-evolved association with hosts, have evolved

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Mechan, Llontop Marco Enrique. "Identification, Characterization, and Use of Precipitation-borne and Plant-associated Bacteria." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96402.

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Bacteria are ubiquitously present in every ecosystem on earth. While bacterial communities that reside in specific habitats, called the microbiota, have characteristic compositions, their constituents are exchanged between habitats. To understand the assembly processes and function of a microbial community in an ecosystem, it is thus important to identify its putative sources and sinks. The sources and sinks of the plant leaf microbiome, also called the phyllosphere microbiome, are still under debate. Here, I hypothesized that precipitation is a so far neglected source of the phyllosphere mic

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Witzig, Stephen B. "Signals affecting the urease status of plant-associated bacteria, Methylobacterium spp." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5049.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on May 12, 2009) Includes bibliographical references.

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WAGER, JORJ ANNE. "BACTERIA ASSOCIATED WITH THE CACTOPHILIC SPECIES DROSOPHILA ARIZONAE AND DROSOPHILA ALDRICHI." Thesis, The University of Arizona, 2008. http://hdl.handle.net/10150/192247.

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Parks, Georgia. "Microbial Analysis of Surfactant-Associated Bacteria in the Sea Surface Microlayer and Remote Sensing of Associated Slicks." Thesis, NSUWorks, 2019. https://nsuworks.nova.edu/occ_stuetd/515.

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The sea-surface microlayer (SML) is the boundary layer at the air-sea interface where many biogeochemical processes occur. Many organisms (e.g., bacteria) produce surface active agents (surfactants) for life processes, which accumulate in the SML and dampen short gravity-capillary waves, resulting in sea surface slicks. Synthetic aperture radar (SAR) is capable of remotely sensing these features on the sea surface by measuring reflected backscatter from the ocean surface in microwaves. This study coordinates SAR overpasses with in situ SML and subsurface (SSW) microbial sample collection to gu

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Pieterse, Renee. "Control of bacterial pathogens associated with mastitis in dairy cows with natural antimicrobial peptides produced by lactic acid bacteria." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/2323.

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Thesis (MSc (Microbiology))--Stellenbosch University, 2008.<br>Mastitis is considered to be the most costly disease affecting the dairy industry. Management strategies involve the extensive use of antibiotics to treat and prevent this disease. Prophylactic dosages of antibiotics used in mastitis control programmes could select for strains with resistance to antibiotics. In addition, a strong drive towards reducing antibiotic residues in animal food products has lead to research in finding alternative antimicrobial agents. Streptococcus macedonicus ST91KM, isolated from bulgarian goat yog

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Grewal, Parwinder Singh. "Studies on saprobic rhabditid nematodes and their associated bacteria affecting mushroom culture." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46322.

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Reardon, Catherine Leona. "Molecular Analysis of Diversity, Gene Expression and Activity of Mineral-Associated Bacteria." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/reardon/ReardonC1205.pdf.

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This dissertation investigated the diversity and hydrogenase activity and gene expression of mineral-associated microorganisms. Surface-associated microbes have been shown to dominate diversity and activity in the environment, however molecular analysis of sediment-associated communities is hindered by both inaccessibility to the subsurface and co-extraction of inhibitory compounds. In order to analyze microbial communities in which the environmental conditions previously had precluded the use of traditional sediment extraction techniques, biofilm coupons (metal, mesh cylinders containing surr

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Lindh, Jenny. "Identification of bacteria associated with malaria mosquitoes - Their characterisation and potential use." Doctoral thesis, Stockholm : Department of Genetics, Microbiology and Toxicology, Stockholm University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6685.

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Chaisiri, K. "Molecular ecology of chigger mites (Acari: Trombiculidae) and associated bacteria in Thailand." Thesis, University of Liverpool, 2016. http://livrepository.liverpool.ac.uk/3004727/.

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Chiggers are the tiny six-legged larval stage of mites in the family Trombiculidae. These mites, particularly the genus Leptotrombidium, act as important vectors of Orientia tsutsugamushi, the causative agent of scrub typhus disease in the Asia-Pacific region (including Thailand). Although the medical impact of these mites has been recognized in the country due to the increasing incidence of the disease in humans, knowledge of the ecology and epidemiological role of these mites is still very limited to date. A systematic review of mite-associated bacteria was conducted from 193 publications (1

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Wu, Chenxi. "Indicative Bacteria in Stored Biosolids and Wastewater Associated Pharmaceuticals in the Environment." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1278966096.

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Shaffer, Justin Park, and Justin Park Shaffer. "Endohyphal Bacteria of Tropical Plant-Associated Fungi: Diversity, Evolutionary Relationships, and Ecology." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625601.

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A growing understanding of complex biotic interactions clarified the importance of symbioses with respect to the ecology and evolution of life. In particular, knowledge of symbioses between eukaryotes and microorganisms such as bacteria and fungi has revolutionized the fields of medicine and agriculture, and made clear the roles of microbes in fostering human and environmental sustainability. For example, diverse fungi associate with the seeds of plants following dispersal. These fungi can influence seed survival and germination in a host-specific and spatially explicit manner, thus influencin

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Dung, Nguyen Quang. "Hysterangium mats and associated bacteria under eucalyptus gomphocephala in south-western Australia." Thesis, Dung, Nguyen Quang (2012) Hysterangium mats and associated bacteria under eucalyptus gomphocephala in south-western Australia. Masters by Research thesis, Murdoch University, 2012. https://researchrepository.murdoch.edu.au/id/eprint/12513/.

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Eucalyptus gomphocephala (tuart) is an ecologically and culturally important woodland and forest tree native to south-western Australia. Unfortunately, tuart has been markedly declining in recent decades, and the mortality rate is as high as 90% in some populations. The cause of tuart decline is still poorly understood and we know nothing about how the decline changes populations of organisms such as ectomycorrhizal (ECM) fungi and beneficial bacteria. Therefore, this study investigated aspects of mycorrhizal fungal mats under healthy tuart, including effects on forest soil properties, and pre

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RIVA, VALENTINA. "PLANT ASSOCIATED BACTERIA: A SUSTAINABLE RESOURCE TO MINIMIZE WATER FOOTPRINT IN AGRICULTURE." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/691225.

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Water scarcity is one of the major worldwide problems affecting in particular agriculture, an intensive water consumer activity. In the frame of the EU H2020 MADFORWATER project, aimed to develop integrated technological and management solutions to reduce water footprint in agriculture, this PhD thesis focused on plant-associated bacteria to improve the productivity of crops growing under drought conditions and wastewater phytodepuration efficiency to allow water reuse for irrigation purposes. A large collection of 681 bacterial strains was isolated from the root apparatus of six plants specie

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Haslett, Norman G. "Factors influencing the production and nature of surface-associated Pseudomonas fragi extracellular polymeric substances (EPS)." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295391.

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Rodriguez, Rodolfo Enrique del Rio. "Aerobic bacterial flora associated with tropical ornamental fish imported into Scotland : their significance and control." Thesis, University of Stirling, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341256.

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Negandhi, Karita L. "Microbial Communities with Emphasis on Coral Disease-Associated Bacteria within Florida Reef Sponges." NSUWorks, 2009. http://nsuworks.nova.edu/occ_stuetd/109.

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Previous studies have shown that bacteria associated with coral diseases are not found in the surrounding water column at detectable levels, yet at the same time, coral diseases are becoming more prominent. Sponges are coral reef residents, which expel filtered seawater that is practically sterile of microbes. Therefore sponges harbor very diverse and abundant microbial communities. This leads to the possibility that coral disease associated bacteria (CDAB) may be present within reef sponge microcosms. In order to identify internal microbes, nonculturable techniques including fluorescent in si

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Whalley, Peter. "The proteolytic and saccharolytic activity of some natural waters and their associated bacteria." Thesis, University of Warwick, 1987. http://wrap.warwick.ac.uk/99338/.

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This study is concerned with the relationship between two hydrolytic enzyme activities, saccharase and protease and other limnological factors, including bacterial flora, in natural waters of varying degrees of organic pollution. Published methodologies for measuring proteolytic and saccharolytic activities were employed to yield data whose statistical distribution was found to be modelled by a log-normal distribution. Natural activities were correlated with biochemical oxygen demand, suspended solids, viable bacteria, combined nitrogen, dissolved solids, flow and temperature. Regression equat

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Sjöberg, Veronika, Olof Sandström, Maria Hedberg, Sten Hammarström, Olle Hernell, and Marie-Louise Hammarström. "Intestinal T-cell responses in celiac disease : impact of celiac disease associated bacteria." Umeå universitet, Immunologi/immunkemi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-64525.

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A hallmark of active celiac disease (CD), an inflammatory small-bowel enteropathy caused by permanent intolerance to gluten, is cytokine production by intestinal T lymphocytes. Prerequisites for contracting CD are that the individual carries the MHC class II alleles HLA-DQ2 and/or HLA-DQ8 and is exposed to gluten in the diet. Dysbiosis in the resident microbiota has been suggested to be another risk factor for CD. In fact, rod shaped bacteria adhering to the small intestinal mucosa were frequently seen in patients with CD during the "Swedish CD epidemic" and bacterial candidates could later be

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El, Semary Nermin Adel Hussein. "Anabaena and associated bacteria : molecular approaches to studying microbial community structure and taxonomy." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420889.

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Al-Own, Fada'a. "Population structure of insect pathogenic bacteria in UK soil and their associated nematodes." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606941.

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Surveys for entomopathogenic bacteria and their associated nematode hosts were conducted locally (University of Bath campus) and across southern England. Sampling involved trialing a novel Android app. (Epicollect) to manage sample collection data. Galleria larvae were used to bait UK soil samples. Insects which became infected were placed on White traps to collect any emerging nematodes, from which bacteria were isolated. Bacteria were also isolated from the haemolymph of any infected larvae. Bacterial isolates were classified on the basis of 16s rDNA and recA gene sequences. Serratia proteam

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Dimude, Juachi Uzochukwu. "CTX-M β-lactamases and associated integrons : their dissemination in Gram-negative bacteria". Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/11729.

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Gram-negative bacteria are able to cause many infections including blood stream infections (BSI).These bacteria may become resistant to antibiotics, often by acquiring genes in the presence of antibiotic selection pressure. Multi drug resistant Gram-negative bacteria have become an increasing problem worldwide. A study of antibiotic resistance in Gram-negative bacteria isolated from blood cultures from patients in the New Royal Infirmary of Edinburgh (NRIE) was performed. In addition, a study was performed on isolates from patients in an intensive care unit in Egypt. All isolates were investig

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Matobole, Relebohile Matthew. "Matrix comparison of isolation conditions for secondary metabolite producing marine sponge associated bacteria." University of the Western Cape, 2015. http://hdl.handle.net/11394/4754.

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>Magister Scientiae - MSc<br>The discovery of novel secondary metabolites has declined significantly in recent years whereas there is a rise in the number of multi-drug resistant pathogens and other types of diseases. The decline in natural product discovery was due to high rediscovery of already known compounds and the costs in developing natural products. As a result pharmaceutical companies lost interest in investing in natural product discovery. However, there is a renewed interest in marine sponge associated microorganisms as a rich and untapped source of secondary metabolites. The object

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Beukes, Chrizelle Winsie. "Characterisation of bacteria associated with the root nodules of Hypocalyptus and related genera." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/31148.

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Until recently, most of the legumes that have been studied in South Africa were known to be nodulated by diverse alpha-rhizobia in the class Alphaproteobacteria. Our knowledge regarding the occurrence of so-called beta-rhizobia were limited and restricted to Aspalathus and Cyclopia species. The aim of this study was, therefore, to explore the diversity and evolution of the root-nodule bacteria of various papilionoid legumes indigenous to southern Africa. By making use of housekeeping gene sequence information, the research presented here showed that all 69 of the bacteria isolated from t

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Devine, Carol A. "16S ribosomal DNA analysis of microbial populations associated with hydrocarbon reservoirs." Thesis, University of Aberdeen, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312360.

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The sulphate-reducing bacteria (SRB) are a diverse group of organisms which use sulphate as a terminal electron acceptor and produce the highly toxic gas, hydrogen sulphide. The deleterious effects of this include hydrocarbon reservoir souring, formation damage and microbial corrosion. The SRB are of major economic importance to the oil industry. However, knowledge of the microbial ecology of the deep subsurface remains limited. The aim of this project was to investigate whether organisms are indigenous to the hydrocarbon formation and/or are introduced during drilling operations. A range of m

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Davenport, Russell James. "The detection and monitoring of mycolic acid containing actinomycetes associated with foaming in activated sludge plants." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313240.

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Morrissey, Ember. "Environmental regulation of tidal wetland microbial communities and associated biogeochemistry." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3300.

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Microbial communities play an essential role in carrying out the biogeochemical cycles that sustain life on Earth, yet we know very little about their ecology. One question of particular interest is how environmental conditions shape microbial community structure (i.e., the types of organisms found in the community and their relative abundance), and whether such changes in structure are related to biogeochemical function. It is the aim of this dissertation to address this question via the examination of carbon (C) and nitrogen (N) cycling in wetland ecosystems, which due to their diverse hydro

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Tujula, Niina Amanda Biotechnology &amp Biomolecular Sciences Faculty of Science UNSW. "Analysis of the epiphytic bacterial community associated with the green alga Ulva australis." Awarded by:University of New South Wales. School of Biotechnology and Biomolecular Sciences, 2006. http://handle.unsw.edu.au/1959.4/25197.

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Epiphytic bacterial communities on the surfaces of marine algae are poorly characterised. Most information available on marine bacterial epiphytes is derived from culture-based studies. With the rapid development of molecular community analysis technologies, it is now possible to obtain a more comprehensive picture of marine microbial populations on living surfaces. The intertidal macroalga Ulva australis, belongs to the cosmopolitan group of green marine algae (Ulvales) known to require the presence of bacteria for normal growth and has been suggested to employ specific bacteria for the defen

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Botham, Crystal Marie. "Molecular and genetic dissection of host pathways disrupted by Helicobacter pylori's virulence factor, cytotoxin associated gene A /." view abstract or download file of text, 2007. http://proquest.umi.com/pqdweb?did=1417800931&sid=1&Fmt=2&clientId=11238&RQT=309&VName=PQD.

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Thesis (Ph. D.)--University of Oregon, 2007.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 60-66). Also available for download via the World Wide Web; free to University of Oregon users.

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