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Asgardarchaeota

Citation

Formal styling
Asgardarchaeota (ex Zaremba-Niedzwiedzka et al., 2017; Rinke et al., 2021) Tamarit et al., 2024
Effective publication
Tamarit et al., 2024
Original (not valid) publication
Zaremba-Niedzwiedzka et al., 2017
Rinke et al., 2021
SeqCode status
Valid (SeqCode)
Register List
seqco.de/r:xmz83je1 (validated)
Canonical URL
https://seqco.de/i:33331

Nomenclature

Rank
Phylum
Inferred stem
Asgardarchae-
Syllabication
As.gar.dar.chae.o'ta
Etymology
N.L. neut. n. Asgardarchaeum, referring to the type genus Asgardarchaeum; -ota, ending to denote a phylum; N.L. neut. pl. n. Asgardarchaeota, the Asgardarchaeum phylum
Nomenclatural type
Asgardarchaeum
Nomenclatural status
Validly published under the SeqCode

Taxonomy

Description
Asgardarchaeota, commonly referred to as Asgard archaea, are a candidatus phylum-level archaeal clade that includes the closest archaeal relatives of eukaryotes. Metagenomic discovery of new microbial life continues to expand our understanding of the diversity and evolutionary history of life on Earth. The Asgard archaea have garnered significant attention due to their close relatedness to the nucleocytoplasmic lineage of eukaryotes, offering invaluable insights into eukaryogenesis, i.e., the evolutionary transition from prokaryotic to eukaryotic cellular life (Zaremba-Niedzwiedzka et al., 2017; Williams et al., 2019; Eme et al., 2023; Vosseberg et al., 2020). Discovered first with environmental 16S rRNA sequencing in 1999 (Vetriani et al., 1999), the group was named Marine Benthic Group B (MBG-B) and later referred to as Deep-Sea Archaeal Group (DSAG) (Inagaki et al., 2003). The first draft genome was obtained 16 years later when a metagenomics survey recovered a metagenome assembled genome (MAG) from marine sediments sampled from the Arctic Ocean, next to a hydrothermal system named Loki’s Castle (Spang et al., 2015), prompting the candidate name Lokiarchaeum as its first genus and "Lokiarchaeota" for its associated candidate phylum. Soon after, genomes of close relatives of Lokiarchaeum were obtained from multiple environments around the world, founding the candidate phyla Thorarchaeota (Seitz et al., 2016), Heimdallarchaeota and Odinarchaeota (Zaremba-Niedzwiedzka et al., 2017). These lineages formed a monophyletic group tentatively described as a superphylum, receiving the name Asgard archaea (Zaremba-Niedzwiedzka et al., 2017). More recently, efforts to align genome diversity within standardized taxonomic ranks (Rinke et al., 2021) led to a reclassification of the Asgard archaea as the phylum Asgardarchaeota and its constituent subgroups as classes.
Classification
Archaea » Asgardarchaeota
Parent
Archaea gtdb assigned in Da Cunha et al., 2017
Children (15)
Alternatively placed children (2)
Synonyms
Pseudonyms
  • Asgard archaea (Colloquial or common name)
  • Marine Benthic Group B (MBG-B) (Colloquial or common name)
  • Deep-Sea Archaeal Group (DSAG) (Colloquial or common name)
  • Asgardiota (Misspelling or other orthographic variants)
  • Asgardaeota (Misspelling or other orthographic variants)

Metadata

Outside links and data sources
Search sequences
Local history
Registered
Over 1 year ago by Appler, Kathryn
Submitted
Over 1 year ago by Appler, Kathryn
Curators
Validated
Over 1 year ago by Rodriguez-R, Luis M
Date of priority
2024-06-21 06:08 PM (UTC)

Publications
12

Citation Title
Tamarit et al., 2024, Systematic and Applied Microbiology Description of Asgardarchaeum abyssi gen. nov. spec. nov., a novel species within the class Asgardarchaeia and phylum Asgardarchaeota in accordance with the SeqCode
Effective publication
Valentin-Alvarado et al., 2023, Asgard archaea modulate potential methanogenesis substrates in wetland soil
Eme et al., 2023, Nature Inference and reconstruction of the heimdallarchaeial ancestry of eukaryotes
Rinke et al., 2021, Nature Microbiology A standardized archaeal taxonomy for the Genome Taxonomy Database
Original (not valid) publication
Vosseberg et al., 2020, Nature Ecology & Evolution Timing the origin of eukaryotic cellular complexity with ancient duplications
Williams et al., 2019, Nature Ecology & Evolution Phylogenomics provides robust support for a two-domains tree of life
Da Cunha et al., 2017, PLOS Genetics Lokiarchaea are close relatives of Euryarchaeota, not bridging the gap between prokaryotes and eukaryotes
Assigned this taxon
Zaremba-Niedzwiedzka et al., 2017, Nature Asgard archaea illuminate the origin of eukaryotic cellular complexity
Original (not valid) publication
Seitz et al., 2016, The ISME Journal Genomic reconstruction of a novel, deeply branched sediment archaeal phylum with pathways for acetogenesis and sulfur reduction
Spang et al., 2015, Nature Complex archaea that bridge the gap between prokaryotes and eukaryotes


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