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Christa Schleper - One of the best experts on this subject based on the ideXlab platform.
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26 the Phylum thaumarchaeota
2014Co-Authors: Michaela Stieglmeier, Ricardo Eloy J Alves, Christa SchleperAbstract:Thaumarchaeota represent a unique Phylum within the domain Archaea that embraces ammonia-oxidizing organisms from soil, marine waters, and hot springs (currently two pure cultures and 13 enrichments), as well as many lineages represented only by environmental sequences from virtually every habitat that has been screened. All cultivated Thaumarchaeota perform the first step in nitrification, i.e., they oxidize ammonia to nitrite aerobically. They live under autotrophic conditions and fix CO2, but some are dependent on the presence of other bacteria or small amounts of organic material. Different from bacterial ammonia oxidizers, all cultivated Thaumarchaeota are adapted to comparably low amounts of substrate (ammonia) and inhabit not only moderate but also extreme environments, such as hot springs and acidic soils. All cultivated strains contain tetraether lipids with crenarchaeol, a Thaumarchaeota-specific core lipid.
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metagenomics of kamchatkan hot spring filaments reveal two new major hyper thermophilic lineages related to thaumarchaeota
Research in Microbiology, 2013Co-Authors: Laila J Reigstad, Thomas Weinmaier, Thomas Rattei, Anja Spang, Anders Lanzén, Christa Schleper, Celine BrochierarmanetAbstract:Based on phylogenetic analyses and gene distribution patterns of a few complete genomes, a new distinct Phylum within the Archaea, the Thaumarchaeota, has recently been proposed. Here we present analyses of six archaeal fosmid sequences derived from a microbial hot spring community in Kamchatka. The phylogenetic analysis of informational components (ribosomal RNAs and proteins) reveals two major (hyper-)thermophilic clades (“Hot Thaumarchaeota-related Clade” 1 and 2, HTC1 and HTC2) related to Thaumarchaeota, representing either deep branches of this Phylum or a new archaeal Phylum and provides information regarding the ancient evolution of Archaea and their evolutionary links with Eukaryotes.
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metagenomics of kamchatkan hot spring filaments reveal two new major hyper thermophilic lineages related to thaumarchaeota
Research in Microbiology, 2013Co-Authors: Laila J Reigstad, Thomas Weinmaier, Thomas Rattei, Anja Spang, Anders Lanzén, Christa Schleper, Celine BrochierarmanetAbstract:Based on phylogenetic analyses and gene distribution patterns of a few complete genomes, a new distinct Phylum within the Archaea, the Thaumarchaeota, has recently been proposed. Here we present analyses of six archaeal fosmid sequences derived from a microbial hot spring community in Kamchatka. The phylogenetic analysis of informational components (ribosomal RNAs and proteins) reveals two major (hyper-)thermophilic clades (“Hot Thaumarchaeota-related Clade” 1 and 2, HTC1 and HTC2) related to Thaumarchaeota, representing either deep branches of this Phylum or a new archaeal Phylum and provides information regarding the ancient evolution of Archaea and their evolutionary links with Eukaryotes.
Celine Brochierarmanet - One of the best experts on this subject based on the ideXlab platform.
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metagenomics of kamchatkan hot spring filaments reveal two new major hyper thermophilic lineages related to thaumarchaeota
Research in Microbiology, 2013Co-Authors: Laila J Reigstad, Thomas Weinmaier, Thomas Rattei, Anja Spang, Anders Lanzén, Christa Schleper, Celine BrochierarmanetAbstract:Based on phylogenetic analyses and gene distribution patterns of a few complete genomes, a new distinct Phylum within the Archaea, the Thaumarchaeota, has recently been proposed. Here we present analyses of six archaeal fosmid sequences derived from a microbial hot spring community in Kamchatka. The phylogenetic analysis of informational components (ribosomal RNAs and proteins) reveals two major (hyper-)thermophilic clades (“Hot Thaumarchaeota-related Clade” 1 and 2, HTC1 and HTC2) related to Thaumarchaeota, representing either deep branches of this Phylum or a new archaeal Phylum and provides information regarding the ancient evolution of Archaea and their evolutionary links with Eukaryotes.
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metagenomics of kamchatkan hot spring filaments reveal two new major hyper thermophilic lineages related to thaumarchaeota
Research in Microbiology, 2013Co-Authors: Laila J Reigstad, Thomas Weinmaier, Thomas Rattei, Anja Spang, Anders Lanzén, Christa Schleper, Celine BrochierarmanetAbstract:Based on phylogenetic analyses and gene distribution patterns of a few complete genomes, a new distinct Phylum within the Archaea, the Thaumarchaeota, has recently been proposed. Here we present analyses of six archaeal fosmid sequences derived from a microbial hot spring community in Kamchatka. The phylogenetic analysis of informational components (ribosomal RNAs and proteins) reveals two major (hyper-)thermophilic clades (“Hot Thaumarchaeota-related Clade” 1 and 2, HTC1 and HTC2) related to Thaumarchaeota, representing either deep branches of this Phylum or a new archaeal Phylum and provides information regarding the ancient evolution of Archaea and their evolutionary links with Eukaryotes.
Laila J Reigstad - One of the best experts on this subject based on the ideXlab platform.
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metagenomics of kamchatkan hot spring filaments reveal two new major hyper thermophilic lineages related to thaumarchaeota
Research in Microbiology, 2013Co-Authors: Laila J Reigstad, Thomas Weinmaier, Thomas Rattei, Anja Spang, Anders Lanzén, Christa Schleper, Celine BrochierarmanetAbstract:Based on phylogenetic analyses and gene distribution patterns of a few complete genomes, a new distinct Phylum within the Archaea, the Thaumarchaeota, has recently been proposed. Here we present analyses of six archaeal fosmid sequences derived from a microbial hot spring community in Kamchatka. The phylogenetic analysis of informational components (ribosomal RNAs and proteins) reveals two major (hyper-)thermophilic clades (“Hot Thaumarchaeota-related Clade” 1 and 2, HTC1 and HTC2) related to Thaumarchaeota, representing either deep branches of this Phylum or a new archaeal Phylum and provides information regarding the ancient evolution of Archaea and their evolutionary links with Eukaryotes.
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metagenomics of kamchatkan hot spring filaments reveal two new major hyper thermophilic lineages related to thaumarchaeota
Research in Microbiology, 2013Co-Authors: Laila J Reigstad, Thomas Weinmaier, Thomas Rattei, Anja Spang, Anders Lanzén, Christa Schleper, Celine BrochierarmanetAbstract:Based on phylogenetic analyses and gene distribution patterns of a few complete genomes, a new distinct Phylum within the Archaea, the Thaumarchaeota, has recently been proposed. Here we present analyses of six archaeal fosmid sequences derived from a microbial hot spring community in Kamchatka. The phylogenetic analysis of informational components (ribosomal RNAs and proteins) reveals two major (hyper-)thermophilic clades (“Hot Thaumarchaeota-related Clade” 1 and 2, HTC1 and HTC2) related to Thaumarchaeota, representing either deep branches of this Phylum or a new archaeal Phylum and provides information regarding the ancient evolution of Archaea and their evolutionary links with Eukaryotes.
William B. Whitman - One of the best experts on this subject based on the ideXlab platform.
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Proposal to reclassify the proteobacterial classes Deltaproteobacteria and Oligoflexia, and the Phylum Thermodesulfobacteria into four phyla reflecting major functional capabilities.
International journal of systematic and evolutionary microbiology, 2020Co-Authors: David W. Waite, Michael Wagner, Alexander Loy, Maria Chuvochina, Claus Pelikan, Donovan H. Parks, Pelin Yilmaz, Takeshi Naganuma, Ryosuke Nakai, William B. WhitmanAbstract:The class Deltaproteobacteria comprises an ecologically and metabolically diverse group of bacteria best known for dissimilatory sulphate reduction and predatory behaviour. Although this lineage is the fourth described class of the Phylum Proteobacteria, it rarely affiliates with other proteobacterial classes and is frequently not recovered as a monophyletic unit in phylogenetic analyses. Indeed, one branch of the class Deltaproteobacteria encompassing Bdellovibrio-like predators was recently reclassified into a separate proteobacterial class, the Oligoflexia. Here we systematically explore the phylogeny of taxa currently assigned to these classes using 120 conserved single-copy marker genes as well as rRNA genes. The overwhelming majority of markers reject the inclusion of the classes Deltaproteobacteria and Oligoflexia in the Phylum Proteobacteria. Instead, the great majority of currently recognized members of the class Deltaproteobacteria are better classified into four novel Phylum-level lineages. We propose the names Desulfobacterota phyl. nov. and Myxococcota phyl. nov. for two of these phyla, based on the oldest validly published names in each lineage, and retain the placeholder name SAR324 for the third Phylum pending formal description of type material. Members of the class Oligoflexia represent a separate Phylum for which we propose the name Bdellovibrionota phyl. nov. based on priority in the literature and general recognition of the genus Bdellovibrio. Desulfobacterota phyl. nov. includes the taxa previously classified in the Phylum Thermodesulfobacteria, and these reclassifications imply that the ability of sulphate reduction was vertically inherited in the Thermodesulfobacteria rather than laterally acquired as previously inferred. Our analysis also indicates the independent acquisition of predatory behaviour in the phyla Myxococcota and Bdellovibrionota, which is consistent with their distinct modes of action. This work represents a stable reclassification of one of the most taxonomically challenging areas of the bacterial tree and provides a robust framework for future ecological and systematic studies.
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road map of the Phylum actinobacteria
Bergey's Manual of Systematics of Archaea and Bacteria, 2012Co-Authors: Wolfgang Ludwig, Jean Euzeby, Peter Schumann, Hansjurgen Busse, Martha E Trujillo, Peter Kampfer, William B. WhitmanAbstract:This revised road map and the resulting taxonomic outline update the previous versions of Garrity and Holt (2001) and Garrity et al. (2005) with the description of additional taxa and new phylogenetic analyses. While the road map seeks to be complete for all taxa validly named prior to 1 January 2008, some taxa described after that date are included.
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Phylum XIV. Bacteroidetes phyl. nov.
Bergey’s Manual® of Systematic Bacteriology, 2010Co-Authors: Noel R. Krieg, Wolfgang Ludwig, Jean Euzeby, William B. WhitmanAbstract:Capitulo en el libro, Krieg, Noel R., et al. (eds.). Bergey's Manual of Systematic Bacteriology. Volume 4: The Bacteroidetes, Spirochaetes, Tenericutes (Mollicutes), Acidobacteria, Fibrobacteres, Fusobacteria, Dictyoglomi, Gemmatimonadetes, Lentisphaerae, Verrucomicrobia, Chlamydiae, and Planctomycetes. 2nd ed. New York: Springer ; [Athens, Ga.]: Bergey's Manual Trust, 2010(1984)
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Phylum all euryarchaeota phy nov
2001Co-Authors: George M. Garrity, John G Holt, Jyoti Keswani, Terry L Miller, Karl Otto Stetter, David R. Boone, Yosuke Koga, G Zellner, William B. Whitman, Song C ChongAbstract:The Phylum currently consists of seven classes: the Methanobacteria, the Methanococci, the Halobacteria, the Thermoplasmata, the Thermococci, the Archaeoglobi, and the Methanopyri. With the sole exception of the Methanococci, which is subdivided into three orders, each class contains a single order. The Euryarchaeota are morphologically diverse and occur as rods, cocci, irregular cocci, lancet-shaped, spiral-shaped, disk-shaped, triangular, or square cells. Cells stain Gram-positive or Gram-negative based on the presence or absence of pseudomurein in cell walls. In some classes, cell walls consist entirely of protein or may be completely absent (Thermoplasmata). Five major physiological groups have been described previously: the methanogenic Archaea, the extremely halophilic Archaea, Archaea lacking a cell wall, sulfate reducing Archaea, and the extremely thermophilic S0 metabolizers.
Henrik H De Fine Licht - One of the best experts on this subject based on the ideXlab platform.
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Mitovirus and Mitochondrial Coding Sequences from Basal Fungus Entomophthora muscae.
Viruses, 2019Co-Authors: Max L. Nibert, Igor V Grigoriev, Humberto Julio Debat, Austin R. Manny, Henrik H De Fine LichtAbstract:Fungi constituting the Entomophthora muscae species complex (members of subPhylum Entomophthoromycotina, Phylum Zoopagamycota) commonly kill their insect hosts and manipulate host behaviors in the process. In this study, we made use of public transcriptome data to identify and characterize eight new species of mitoviruses associated with several different E. muscae isolates. Mitoviruses are simple RNA viruses that replicate in host mitochondria and are frequently found in more phylogenetically apical fungi (members of subPhylum Glomeromyoctina, Phylum Mucoromycota, Phylum Basidiomycota and Phylum Ascomycota) as well as in plants. E. muscae is the first fungus from Phylum Zoopagomycota, and thereby the most phylogenetically basal fungus, found to harbor mitoviruses to date. Multiple UGA (Trp) codons are found not only in each of the new mitovirus sequences from E. muscae but also in mitochondrial core-gene coding sequences newly assembled from E. muscae transcriptome data, suggesting that UGA (Trp) is not a rarely used codon in the mitochondria of this fungus. The presence of mitoviruses in these basal fungi has possible implications for the evolution of these viruses.
