Phylum All. Euryarchaeota phy. nov.

Holt, John G.; Whitman, William B.; Keswani, Jyoti; Boone, David R.; Koga, Yosuke; Miller, T.; Stetter, Karl O.; Zellner, Gerhard; Chong, Song; Huber, Harald; Huber, Gertrud; Ferry, James G.; Ollivier, Bernard; Mah, Robert A.; Sowers, Kevin R.; Zhilina, T. N.; Baker, Chad C.; Romesser, James A.; Grant, William D.; Patel, G. B.; McGenity, Terry J.; Kamekura, Masahiro; Ventosa, António; Kobayashi, Tetsuo; Oren, Aharon; Montalvo‐Rodríguez, Rafael; Vreeland, Russell H.; Tindall, Brian J.; Huber, Robert; Xu, Yi; Zhou, Pengyu; Reysenbach, Anna‐Louise; Langworthy, Thomas A.; Tian, Xiao; Zillig, Wolfram; Hafenbradl, Doris

doi:10.1007/978-0-387-21609-6_17

Cited by 60 publications

(25 citation statements)

References 60 publications

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“…Filamentous like aggregations of Methanosaeta cells were also observed. Garrity and Holt, in 2001 [33] have reported the formation of filaments comprising of 10-300 cells by Methanosaeta species. According to Zitomer [34], the filamentous morphology of Methanosaeta aid in the process of granule formation wherein the filaments serve as binders to help hold the granule together however granulation process is not relevant as all digesters were continuously stirred type reactors.…”

Section: Methodsmentioning

confidence: 99%

Assessing Methanogenic Archaeal Community in Full Scale Anaerobic Sludge Digester Systems in Dubai, United Arab Emirates

et al. 2018

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Introduction:Anaerobic digestion for methane production comprises of an exceptionally diverse microbial consortium, a profound understanding about which is still constrained. In this study, the methanogenic archaeal communities in three full-scale anaerobic digesters of a Municipal Wastewater Treatment Plant were analyzed by Fluorescence in situ hybridization and quantitative real-time Polymerase Chain Reaction (qPCR) technique.Methods & Materials:Fluorescence in situ hybridization (FISH) was performed to detect and quantify the methanogenic Archaea in the sludge samples whereas qPCR was carried out to support the FISH analysis. Multiple probes targeting domain archaea, different orders and families of Archaea were used for the studies.Results and Discussion:In general, the aceticlastic organisms (Methanosarcinaceae & Methanosaetaceae) were more abundant than the hydrogenotrophic organisms (Methanobacteriales, Methanomicrobiales, Methanobacteriaceae & Methanococcales). Both FISH and qPCR indicated that family Methanosaetaceae was the most abundant suggesting that aceticlastic methanogenesis is probably the dominant methane production pathway in these digesters.Conclusion:Future work involving high-throughput sequencing methods and correlating archaeal communities with the main operational parameters of anaerobic digesters will help to obtain a better understanding of the dynamics of the methanogenic archaeal community in wastewater treatment plants in United Arab Emirates (UAE) which in turn would lead to improved performance of anaerobic sludge digesters.

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Section: Methodsmentioning

confidence: 99%

Assessing Methanogenic Archaeal Community in Full Scale Anaerobic Sludge Digester Systems in Dubai, United Arab Emirates

et al. 2018

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“…They are mostly strictly aerobic chemoorganoheterotrophs growing on complex media, with some strains being capable of a facultative anaerobic life-style using alternative electron acceptors like nitrate or fermentative growth on arginine (369,542,543). The metabolism of extremely halophilic Archaea as well as its diversity have been reviewed recently (369 [542][543][544], and the pathways for D-glucose, D-fructose, and D-xylose degradation have been analyzed in detail (33,70,180,246,287,343). The most detailed studies on sugar metabolism in haloarchaea have been carried out with Hfx.…”

Section: Fig 25mentioning

confidence: 99%

Carbohydrate Metabolism in Archaea: Current Insights into Unusual Enzymes and Pathways and Their Regulation

Bräsen

Esser

Rauch

et al. 2014

Microbiol Mol Biol Rev

271

294

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SUMMARY The metabolism of Archaea , the third domain of life, resembles in its complexity those of Bacteria and lower Eukarya . However, this metabolic complexity in Archaea is accompanied by the absence of many “classical” pathways, particularly in central carbohydrate metabolism. Instead, Archaea are characterized by the presence of unique, modified variants of classical pathways such as the Embden-Meyerhof-Parnas (EMP) pathway and the Entner-Doudoroff (ED) pathway. The pentose phosphate pathway is only partly present (if at all), and pentose degradation also significantly differs from that known for bacterial model organisms. These modifications are accompanied by the invention of “new,” unusual enzymes which cause fundamental consequences for the underlying regulatory principles, and classical allosteric regulation sites well established in Bacteria and Eukarya are lost. The aim of this review is to present the current understanding of central carbohydrate metabolic pathways and their regulation in Archaea . In order to give an overview of their complexity, pathway modifications are discussed with respect to unusual archaeal biocatalysts, their structural and mechanistic characteristics, and their regulatory properties in comparison to their classic counterparts from Bacteria and Eukarya . Furthermore, an overview focusing on hexose metabolic, i.e., glycolytic as well as gluconeogenic, pathways identified in archaeal model organisms is given. Their energy gain is discussed, and new insights into different levels of regulation that have been observed so far, including the transcript and protein levels (e.g., gene regulation, known transcription regulators, and posttranslational modification via reversible protein phosphorylation), are presented.

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“…However, the phenotypic and phylogenetic characteristics of M. bourgensis MS2 T , M. olentangyi RC/ER T and M. oldenburgensis CB‐1 T suggest that they are subjective synonyms (Asakawa & Nagaoka, 2003). Based on its 16S rRNA gene sequence, strain ZC‐2 T is distinct from the other type species of the genus Methanoculleus (Garrity & Holt, 2001). This conclusion is supported by its growth temperature and NaCl concentration, which are higher than most type species of genus Methanoculleus (Table 1).…”

Section: Discussionmentioning

confidence: 99%

“…All species can grow on H 2 /CO 2 or sodium formate as substrates for methanogenesis; only M. chikugoensis and M. palmolei use secondary alcohols. Species of Methanoculleus generally have a higher mol% G+C of genomic DNA (48.6–61) than Methanococcus (31–41) and Methanogenium (47–52) (Dianou et al , 2001; Garrity & Holt, 2001). Methanoculleus can be isolated from anaerobic digesters, fresh or marine sediments.…”

Section: Introductionmentioning

confidence: 99%

Isolation and characterization ofMethanoculleus receptaculisp. nov. from Shengli oil field, China

Cheng

Qiu

et al. 2008

FEMS Microbiology Letters

102

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Three strictly anaerobic, thermophilic methanogens (ZC-2T, ZC-3 and ZC-6) were isolated from Shengli oil field, China. The 16S rRNA gene sequences of the three strains were nearly identical, possessing > 99.8% sequence similarity. They also possessed high sequence similarity, 97.4%, to Methanoculleus palmolei strain INSLUZ(T) (97.4% and 97.5%, respectively), indicating that they represented a novel species within the genus Methanoculleus. Cells of strain ZC-2T were nonmotile cocci, 0.8-1.7 microm in diameter, and always occurred singly or in pairs. The three strains used H2/CO2 or sodium formate as substrates for methanogenesis but not sodium acetate, trimethylamine, monomethylamine, ethanol, dimethyl sulfide, isopropanol, isobutanol, butan-2-ol or H2/CO. Optimum growth of strain ZC-2T occurred in the presence of 0.2 M NaCl, pH 7.5-7.8 and temperature 50-55 degrees C with a specific growth rate of 0.084 h(-1). The mol% G+C content of the genomic DNA was 55.2 mol%. Based on these phenotypic and phylogenetic characteristics, strains ZC-2T, ZC-3 and ZC-6 are proposed to represent a novel species in the genus Methanoculleus and named Methanoculleus receptaculi sp. nov. The type strain is ZC-2T (CGMCC 1.5087T=DSM 18860T).

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Phylum All. Euryarchaeota phy. nov.

Cited by 60 publications

References 60 publications

Assessing Methanogenic Archaeal Community in Full Scale Anaerobic Sludge Digester Systems in Dubai, United Arab Emirates

Assessing Methanogenic Archaeal Community in Full Scale Anaerobic Sludge Digester Systems in Dubai, United Arab Emirates

Carbohydrate Metabolism in Archaea: Current Insights into Unusual Enzymes and Pathways and Their Regulation

Isolation and characterization ofMethanoculleus receptaculisp. nov. from Shengli oil field, China

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