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Dissertations / Theses on the topic 'Methanogens'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Luton, Philip Emmett. "A study of landfill methanogens." Thesis, Liverpool John Moores University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337814.

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2

Kadam, Priya. "Physiology of halophilic, methylotrophic methanogens /." Full text open access at:, 1996. http://content.ohsu.edu/u?/etd,652.

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3

Earl, Julie. "The molecular ecology of methanogens in a hypereutrophic lake." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250268.

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4

Steigerwald, Vanessa J. "Characterization and isolation of the polyferredoxin from thermophilic methanogens /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu148784969696458.

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5

ZHANG, JING. "INTERACTION OF METHANOGENS WITH CLAY MINERALS, ORGANIC MATTER, AND METALS." Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1389881682.

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6

Fairley, Derek John. "Metabolism of aromatic compounds and amides by extremely halophilic archaea." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343046.

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7

Marquart, Kyle Anthony. "pH as a control on interactions of methanogens and iron reducers." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/35567.

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Master of Science<br>Department of Geology<br>Matthew Kirk<br>A growing body of evidence demonstrates that methanogenesis and Fe(III) reduction can occur simultaneously. However, environmental controls on interactions between each are poorly understood. In this study we considered pH as a control on interactions between Fe(III) reduction and methanogenesis in anoxic sediment bioreactors. The reactors consisted of 100mL of synthetic aqueous media, and 1 g of marsh sediment amended with goethite (1mmol). One set of reactors received acidic media (pH 6), and the other alkaline media (pH 7.5). Eac

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8

Wayne, Jonathan Mark. "The development of molecular techniques for microbial population analysis in landfills." Thesis, Open University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367222.

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9

Serrano, Paloma. "Methanogens from Siberian permafrost as models for life on Mars : response to simulated martian conditions and biosignature characterization." Phd thesis, Universität Potsdam, 2014. http://opus.kobv.de/ubp/volltexte/2014/7229/.

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Mars is one of the best candidates among planetary bodies for supporting life. The presence of water in the form of ice and atmospheric vapour together with the availability of biogenic elements and energy are indicators of the possibility of hosting life as we know it. The occurrence of permanently frozen ground – permafrost, is a common phenomenon on Mars and it shows multiple morphological analogies with terrestrial permafrost. Despite the extreme inhospitable conditions, highly diverse microbial communities inhabit terrestrial permafrost in large numbers. Among these are methanogenic archa

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10

Kraszewski, Jessica. "Enzymology and Physiology of a New Type of Phosphoenolpyruvate Carboxylase and the Development of a Pyruvate Carboxylase Expression System." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/40966.

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Our laboratory is interested in studying the junction of glycolysis and the tricarboxylic acid (TCA) cycle, specifically the enzymes phosphoenolpyruvate carboxykinase, pyruvate carboxylase and phosphoenolpyruvate carboxylase. All produce oxaloacetate (OAA) for the cell. OAA production is critical for cell carbon synthesis in the methanogenic archaea. Therefore OAA-generating enzymes are essential for the survival of methanogens. In part of this study we investigated archaeal-type phosphoenolpyruvate carboxylase (PpcA), a new type of phosphoenolpyruvate carboxylase, which is widespread in

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11

Watkins, Andrew. "A survey of culturable methanogens in contrasting marine sediments, their substrates and physiological characteristics." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/29046/.

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Few culture-based surveys have been undertaken on methanogens in contrasting marine sediments. This project conducted a comprehensive study of methanogens in a range of marine sediments including tidal-flats, a shallow bay, deep-water mud volcanoes and Guaymas Basin hydrothermal sediments. Nine of the sixteen recognised methanogen genera were cultured ranging from only one methanogen genus at mud volcano sites to eight in tidal-flats. At a number of these sites, culture-independent techniques (16S rRNA and mcrA gene sequences) had either failed to detect the presence of methanogens or had unde

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12

Finn, Michael Wehren. "Discovery of a biochemical pathway to generate ribulose 1,5-bisphosphate and subsequent CO₂ fixation through ribulose carboxylase/oxygenase (rubisco) in methanococcus jannaschii." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1077915999.

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13

Correia, Jason Daniel. "Posttranslational processing of Methanococcus voltae preflagellin by preflagellin peptidases of M. voltae and other methanogens." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0004/MQ42602.pdf.

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14

Kim, Yong Sung. "Development and application of rapid methods for quantification and cultivation of methanogens in biomethane producing fermentors." Thesis, University of the West of Scotland, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.731776.

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15

Meakin, Stephanie Asalyn Carleton University Dissertation Biology. "The molecular biology of methanogens: cell lysis, plasmid survey and the characterization of a novel plasmid." Ottawa, 1992.

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16

Lang, Kristina [Verfasser], and Andreas [Akademischer Betreuer] Brune. "Diversity, ultrastructure, and comparative genomics of “Methanoplasmatales”, the seventh order of methanogens / Kristina Lang. Betreuer: Andreas Brune." Marburg : Philipps-Universität Marburg, 2015. http://d-nb.info/1073248003/34.

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17

Susanti, Dwi. "Sulfite reductase and thioredoxin in oxidative stress responses of methanogenic archaea." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51423.

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Methanogens are a group of microorganisms that utilize simple compounds such as H2 + CO2, acetate and methanol for the production of methane, an end-product of their metabolism. These obligate anaerobes belonging to the archaeal domain inhabit diverse anoxic environments such as rice paddy fields, human guts, rumen of ruminants, and hydrothermal vents. In these habitats, methanogens are often exposed to O2 and previous studies have shown that many methanogens are able to tolerate O2 exposure. Hence, methanogens must have developed survival strategies to be able to live under oxidative stres

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18

Christophersen, Claus. "Grain and artificial stimulation of the rumen change the abundance and diversity of methanogens and their association with ciliates." University of Western Australia. School of Animal Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0114.

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[Truncated abstract] In Australia, there is pressure to reduce the amount of methane produced by ruminant livestock because they are the single largest source of methane emitted from anthropogenic sources, accounting for 70.7% of agricultural methane emissions. In addition, methane production represents a loss of gross energy intake to the animal. The organisms that are responsible for methane production in the animal gut are a distinct group of Archaea called methanogens. Methanogens occupy three different niches within the rumen. Some live freely in the rumen digesta (planktonic), others are

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19

Duc, Nguyen Thanh. "Abiotic and biotic methane dynamics in relation to the origin of life." Doctoral thesis, Stockholms universitet, Institutionen för geologiska vetenskaper, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-65895.

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Methane (CH4) plays an important role in regulating Earth’s climate. Its atmospheric concentrations are related to both biotic and abiotic processes. The biotic one can be formed either by chemoautotrophic or heterotrophic pathways by methanogens. Abiotic CH4 formation can occur from several sequential reactions starting with H2 production by serpentinization of Fe-bearing minerals followed by Fischer-Tropsch Type reactions or thermogenic reactions from hydrocarbons. In the presence of suitable electron acceptors, microbial oxidation utilizes CH4 and contributes to regulating its emission. Fr

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20

Nayak, Bina S. "Microbial Population Analysis in Leachate From Simulated Solid Waste Bioreactors and Evaluation of Genetic Relationships and Prevalence of Vancomycin Resistance Among Environmental Enterococci." Scholar Commons, 2009. http://scholarcommons.usf.edu/etd/3910.

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Degradation of the several million tons of solid waste produced in the U.S. annually is microbially mediated, yet little is known about the structure of prokaryotic communities actively involved in the waste degradation process. In the first study, leachates generated during degradation of municipal solid waste (MSW) in the presence (co-disposal) or absence of biosolids were analyzed using laboratory-scale bioreactors over an eight-month period. Archaeal and bacterial community structures were investigated by denaturing gradient gel electrophoresis (DGGE) targeting 16S rRNA genes. Regardless o

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21

Grine, Ghiles. "Méthanogènes : entre commensalisme et opportunisme." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0623.

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Dans la première partie de notre Thèse, nous avons revu la littérature de l’ensemble des espèces méthanogènes retrouvées dans les différents microbiotes de l’homme. Nous avons également fait un point sur les diverses méthodes utilisées en microbiologie clinique pour rechercher et identifier ces microorganismes. Dans une seconde partie de notre thèse, nous avons montré que le tractus digestif humain est colonisé par M. smithii dès le premier jour de la vie posant ainsi la question des sources potentielles d’acquisition de ce méthanogènes. Nous avons détecté et isolé M. smithii et M. oralis dans

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22

Schneekloth, Eric John. "Factors Contributing to Trimethylamine Generation from Limed and Polymer Conditioned Sludges." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/40874.

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Trimethylamine, (CH3)3N, (TMA), odors are often associated with limed and polymer conditioned sludges. This odor has a fishy smell and can be a nuisance to the community surrounding a wastewater treatment plant or land application site. Several factors are thought to determine the amount of TMA generated from limed biosolids. These are, the presence of cationic polymer, the polymer dose, the time between addition of polymer and lime stabilization, shear imparted on the sludge in the dewatering process and dewatered cake solids concentration. All of these were investigated in this study. The re

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23

McDonald, Heather Brown. "The effect of sulfide inhibition and organic shock loading on anaerobic biofilm reactors treating a low-temperature, high-sulfate wastewater." Diss., University of Iowa, 2007. http://ir.uiowa.edu/etd/129.

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24

Yin, Xiuran [Verfasser], Tilmann [Akademischer Betreuer] Harder, Michael W. [Gutachter] Friedrich, and Jens [Gutachter] Harder. "Carbon Metabolism of Methylotrophic Methanogens and Asgard Archaea in Marine Sediments / Xiuran Yin ; Gutachter: Michael W. Friedrich, Jens Harder ; Betreuer: Tilmann Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2019. http://d-nb.info/1189309157/34.

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25

Gillespie, Jaimie. "The effects of saltwater intrusion on methanogen community abundance, structure, and activity." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3175.

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Tidal freshwater wetlands (TFW) are at significant risk of loss or alteration due to global climate change, and saltwater intrusion from sea level rise is of particular concern for these habitats due to their proximity to coastal areas. A space-for-time model was used to investigate the effects of saltwater intrusion on soil methanogen communities along naturally occurring salinity gradients on the Waccamaw, James, and Hudson Rivers. Amplification of the methyl coenzyme-M reductase (mcrA) functional gene was used in qPCR, reverse transcription qPCR, and T-RFLP to measure the abundance, activit

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26

Serrano, Paloma [Verfasser], and Dirk [Akademischer Betreuer] Wagner. "Methanogens from Siberian permafrost as models for life on Mars : response to simulated martian conditions and biosignature characterization / Paloma Serrano. Betreuer: Dirk Wagner." Potsdam : Universitätsbibliothek der Universität Potsdam, 2014. http://d-nb.info/1063166829/34.

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27

Berrier, David J. Jr. "Response and recovery of syntrophic and methanogenic activity to saltwater intrusion in a tidal freshwater marsh soil." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/6051.

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Tidal freshwater wetland soils contain large amounts of organic carbon, some of which is mineralized to carbon dioxide (CO2) and methane (CH4) by a diverse consortium of anaerobic microorganisms that includes fermenters, syntrophs, and methanogens (MG). These microbial groups are tightly linked and often rely on cooperative interspecies metabolisms (i.e., syntrophy) to survive. Environmental perturbations can disrupt these interactions and thus alter the rates and pathways of carbon cycling. One environmental change of particular concern in coastal wetlands is sea level rise, which can result

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28

Singh, Rajesh. "Role of Microorganisms in Heavy Metal Remediation." Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1447974231.

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29

Billard, Elodie. "Etude des communautés microbiennes fonctionnelles benthiques impliquées dans le cycle du méthane (Lac du Bourget)." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAA017/document.

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Les communautés microbiennes benthiques participent activement au recyclage de la matière organique et de fait au fonctionnement biogéochimique des écosystèmes lacustres. Ces communautés comportent de nombreux phyla mais leur diversité fonctionnelle est encore incomplètement connue. Ce travail vise à appréhender les modifications de structure et d'abondance des gènes fonctionnels en lien avec la distribution spatiale verticale (liée au gradient d'oxydoréduction), la variabilité spatiale horizontale (zone côtière vs pélagique) et la dynamique saisonnière liée au brassage de la colonne d'eau (ré

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30

Feige, Katharina. "Molecular ecological analysis of methanogenic communities in terrestrial and submarine permafrost deposits of Siberian Laptev Sea area." Phd thesis, Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2009/3799/.

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Despite general concern that the massive deposits of methane stored under permafrost underground and undersea could be released into the atmosphere due to rising temperatures attributed to global climate change, little is known about the methanogenic microorganisms in permafrost sediments, their role in methane emissions, and their phylogeny. The aim of this thesis was to increase knowledge of uncultivated methanogenic microorganisms in submarine and terrestrial permafrost deposits, their community composition, the role they play with regard to methane emissions, and their phylogeny. It is ass

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31

Lalman, Jerald David Anthony. "Anaerobic degradation of linoleic (C¦1¦8:¦2), oleic (C¦1¦8:¦1) and stearic (C¦1¦8:¦0) acids and their inhibitory effects on acidogens, acetogens and methanogens." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0028/NQ49841.pdf.

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32

Lv, Wen. "The isolation and characterization of new C. thermocellum strains and the evaluation of multiple anaerobic digestion systems." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1367463424.

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33

Ilin, Dimitri. "Characterization of Bacterial Community Structure in Deep Subsurface Sedimentary Core Samples from Michigan Basin, Ontario." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20531.

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Deep subsurface rock samples from Upper Ordovician strata in the Michigan Basin were analyzed for the presence of microbial communities. High concentrations of biogenic methane were observed in the Upper and Middle Ordovician formations. Total porosity values for the shale, shale hard bed and limestone samples were 7.4%, 2.5% and 1.9%, respectively. Hydrocarbon presence ranged from petroliferous shale, to bituminous layering in shale hard beds, to hydrocarbon odour in limestone. Organic carbon content ranged from 0.5 to 2.5%, highest amount being present in the shale. Environmental DNA was ext

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34

Araujo, Juliana Calábria de. "Biofilmes anaeróbios: desenvolvimento e caracterização filogenética usando a hibridação in situ com sondas fluorescentes." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-24012017-163310/.

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Neste trabalho investigou-se o desenvolvimento de biofilmes anaeróbios em um sistema de laboratório chamado de \"Modified Robbins Device\" (MRD). O objetivo específico foi o de comparar a organização das células anaeróbias, particularmente daquelas que são comuns em lodos de esgoto, sobre superfícies hidrofílicas (vidro) e hidrofóbicas (polipropileno). A hibridação in situ com sondas fluorescentes complementares ao RNAr 16S específicas para domínio e grupos e a microscopia confocal de varredura a laser foram utilizadas para verificar a composição microbiana dos biofilmes, bem como do inóculo.

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35

Coves, Marion. "Les dynamiques hôte-virus dans les digesteurs anaérobies sous l'effet d'un stress abiotique." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASB040.

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Les virus des microbes sont des acteurs majeurs dans divers écosystèmes, affectant la structuration et la dynamique des communautés microbiennes. Cependant, ils restent peu explorés dans le domaine de la digestion anaérobie (DA). Les écosystèmes de ces processus sont très sensibles aux perturbations, entraînant inhibition et diminution de la production de méthane. Cette thèse aborde l'interaction entre des perturbations abiotiques, la composition des communautés microbienne et virale et la performance du procédé.La dynamique des populations virales a été étudiée dans des digesteurs anaérobies,

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36

Guilhot, Elodie. "Techniques de culture pour l'étude du microbiote digestif anaérobie." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0611.

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Les microorganismes anaérobies représentent la population majoritaire de notre tube digestif et ont un impact remarquable sur notre santé. Leur culture demeure à ce jour longue, fastidieuse et coûteuse et nombreux sont ceux qui restent incultivables. Or la culture est un outil indispensable pour l'étude du microbiote digestif. Ainsi, le laboratoire dans lequel ma thèse s’est déroulée a créé un nouveau concept de culture « Microbial Culturomics » qui a permis d’isoler 193 nouvelles espèces bactériennes anaérobies. Un travail sur l’utilisation des antioxydants pour permettre la culture aérobie d

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37

Sogodogo, Elisabeth. "Détection des méthanogènes dans la flore oro-sinusale." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0238.

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Dans la première partie de notre Thèse, nous avons revu la littérature sur les méthanogènes retrouvés dans les différents microbiotes de l’Homme. Nous avons également fait un point sur les diverses méthodes utilisées pour la détection de ces microorganismes au laboratoire de microbiologie clinique.Dans une seconde partie de notre travail de Thèse, nous avons testé la production d’hydrogène par les bactéries anaérobies facultatives d’intérêt clinique, plus particulièrement les bactéries précédemment retrouvées associées avec les méthanogènes dans les échantillons cliniques. Nous avons observé q

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38

Morozova, Daria. "Tolerance limits and survival potential of methanogenic archaea from Siberian permafrost under extreme living conditions = Toleranzgrenzen und Überlebensstrategien von methanogenen Archaeen aus sibirischen Permafrosthabitaten unter Extrembedingungen /." Bremerhaven : Alfred-Wegener-Institut für Polar- und Meeresforschung, 2007. http://www.loc.gov/catdir/toc/fy0804/2008384365.html.

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39

Glissmann, Kristin. "Methanogene Zersetzung von Stroh im Reisfeldboden." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=962379816.

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40

Menaia, Jose Antonio Gomes Ferreira. "Osmotics of halophilic methanogenic archaeobacteria /." Full text open access at:, 1992. http://content.ohsu.edu/u?/etd,239.

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41

Fey, Axel. "Einfluss der Temperatur auf methanogene Abbauprozesse im Reisfeldboden." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=962386197.

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42

Steil, Lara. "Avaliação da atividade microbiana metanogênica na lagoa de estabilização anaeróbia da estação de tratamento de esgotos sanitários do município de Cajati, Vale do Ribeira do Iguape, Estado de São Paulo." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-17032008-135814/.

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O estudo sobre a comunidade microbiana de um sistema de tratamento biológico de águas residuárias é de particular interesse, uma vez que o conhecimento da microbiologia do processo pode levar ao aperfeiçoamento de projetos e ao aumento da eficiência dos sistemas. Este trabalho avaliou a atividade microbiana, particularmente a metanogênica, na lagoa de estabilização anaeróbia da estação de tratamento de esgotos sanitários do município de Cajati - SP. Para isso adotou a taxonomia polifásica na caracterização dos microrganismos e de seus aspectos funcionais, buscando o conhecimento da diversidade

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43

Ben, Abdallah Manel. "Etude de la diversité microbienne (bactéries et archées) d'un environnement hypersalé tunisien, le Chott El Jerid : applications biotechnologiques." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4757.

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Le présent travail s’intéresse à l’étude de la diversité des communautés procaryotiques, basée sur le gène codant pour l’ARNr 16S et sur les gènes codants pour la sous-unité β du sulfite réductase dissimilatrice (dsrB) et la sous-unité alpha de la méthyl-coenzyme M réductase (mcrA), pour étudier la diversité de la communauté des bactéries sulfato-réductrices et des méthanogènes, respectivement à partir des échantillons collectés en saison sèche ou pluvieuse du Chott El Jerid. Les analyses des séquences du gène codant pour l’ARNr 16S ont montré que les bactéries regroupées aux Proteobacteria et

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44

Mamat, Björn. "Strukturaufklärung der metallfreien Hydrogenase aus methanogenen Archaea." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965367053.

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45

Andras, Eva. "Initial biofilm formation of acetoclastic methanogenic bacteria." Thesis, University of Ottawa (Canada), 1988. http://hdl.handle.net/10393/5060.

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46

Misiura, Andrew John. "Characterisation of some methanogenic enzymes and cofactors." Thesis, University of East Anglia, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329550.

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47

Moore, Theodore B. "Characterization of a new freshwater methanogen, Methanogenium wolfei sp. nov." PDXScholar, 1985. https://pdxscholar.library.pdx.edu/open_access_etds/3537.

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A recently isolated freshwater methanogenium species, Methanogenium wolfei, is characterized. Cells were irregular cocci, measuring 1.5 to 2.0 micrometers in diameter. No motility was observed, but 1 to 2 flagella per cell were observed after staining with Gray's Flagella Stain. Colonies formed by this species were small, shiny, and green-brown in color. Formate or hydrogen plus carbon dioxide served as substrates for growth. The optimal temperature for growth was found to be 45 degrees centigrade with minimal growth below 30 degrees centigrade and above 55 degrees centigrade. The optimal pH f

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48

Attal, Aline. "Etude de la stabilité et de la modélisation d'un digesteur anaérobie : rôle du pH, de l'acétate et de l'hydrogène." Toulouse, INSA, 1989. http://www.theses.fr/1989ISAT0009.

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Etude des 3 systemes bacteriens, les acetogenes, les acetoclastes et les hydrogenophiles, impliques dans les deux dernieres etapes de la methanisation d'effluents biodegradables. L'effet inhibiteur de leurs substrats respectifs (propionate, acetate et hydrogene-co#2) et du ph a ete etudie pour chacune de ces populations bacteriennes. Les cinetiques de degradation des substrats en digesteur anaerobie, ont ete modelisees selon l'expression de monod

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49

Mashaphu, Nthabiseng. "The microbial composition of a natural methanogenic consortium." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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Wetlands account for approximately 20% of annual global methane emissions. Many wetlands receive inputs of organic matter, nutrients, metals and various toxic compounds from adjacent agricultural and industrial areas. The present study aimed to investigate the microbial composition of a natural methanogenic consortium. A consortium-based molecular approach to study diversity of methanogenic microbial communities in a natural wetland at the primary inflow was used. Key microorganisms of a nethane producing consortium were identified. Extracted high molecular mss DNA ws analysed by PCR combined

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Li, Jun, and 李俊. "Molecular evolution and phylogeny of methanogenic archael genomes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208152.

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Abstract:

Methane (CH4) is the major chemical component of natural gas, as well as a particularly potent greenhouse gas. Methanogens are the archaeal organisms that produce methane and play a key role in biological methanogenesis. A total of six taxonomic orders of archaeal methanogens have been discovered and almost all previous phylogenetics studies have confirmed that these methanogens are genetically diversified and do not belong to a phylogenetically monophyletic group. To date, the relationships between methanogens and closely related non-methanogen species at the taxonomic order level remain unre

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