Formal styling
Terraquivivens Buessecker et al., 2022
Proposed by
Buessecker et al., 2022
Valid (SeqCode)
Register List
seqco.de/r:slp2ijs4 (validated)


L. fem. n. terra, the earth; L. fem. n. aqua, water; L. pres. part. vivens, living; N.L. fem. n. Terraquivivens, living in water from the earth
Nomenclatural type
Terraquivivens tikiterensisTs


Genomes of members of this genus were recovered from metagenomic sequencing of samples obtained from geothermal springs from China, New Zealand and USA. AAI values among members of different species within the genus range between 78 and 86 %. Based on ancestral state reconstruction analysis, likely losses of cytochrome C oxidase and aerobic carbon monoxide dehydrogenase subunit encoding genes occurred in an ancestral population to the genus, indicating that members of this genus are likely anaerobes. Although no in vitro evidence of tungsten utilization or dependence for this organism is available, the presence of genes encoding the tungstate ABC transporter (tupABC) is conserved within the genus, which suggest the ability to take up tungstate from the environment. Of the tungsten-dependent AORs investigated in this study, several are conserved within the genus, but the type of aldehydes oxidized by these enzymes remain unclear. Sulfide-dependent respiration is likely in these organisms as sulfide:quinone oxidoreductase (sqr)-encoding genes are mostly present in the genomes of these organisms. Delineation of this taxon as a genus-level group is supported by phylogenomics, AAI and RED values.
Incertae sedis (Archaea) » “Caldarchaeales” » Wolframiiraptoraceae » Terraquivivens
Children (4)


Search sequences
Local history
Registered by
MarikePalmer over 1 year ago
Submitted by
MarikePalmer 9 months ago
Validated by
miguel 9 months ago

Publications (1)

Citation Title
Buessecker et al., 2022, Nature Communications An essential role for tungsten in the ecology and evolution of a previously uncultivated lineage of anaerobic, thermophilic Archaea
Proposed this name

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