SeqCode Registry
Register List https://seqco.de/r:00m8misf [2025]

Register list for 7 new names including Sigynarchaeum gen. nov.

Submitted by Xie, Ruize

Order Sigyniarchaeales

Etymology
[Si.gy.ni.ar.chae.a'les] N.L. neut. n. Sigyniarchaeum, referring to the type genus Sigyniarchaeum; -ales, ending to denote an order; N.L. fem. pl. n. Sigyniarchaeales, the Sigyniarchaeum order
Nomenclatural type
Genus Sigyniarchaeum
Description
The order is described based on 37 concatenated conserved marker genes phylogeny. The description is the same as that of its sole genus and species. Type genus is Sigynarchaeum.
Classification
Archaea » Asgardarchaeota » “Lokiarchaeia” » Sigyniarchaeales
References
Effective publication: Xie et al., 2022 [1]

Family Freyriarchaeaceae

Etymology
[Frey.ri.ar.chae.a'ce.ae] N.L. neut. n. Freyriarchaeum, referring to the type genus Freyriarchaeum; -aceae, ending to denote a family; N.L. fem. pl. n. Freyriarchaeaceae, the Freyriarchaeum family
Nomenclatural type
Genus Freyriarchaeum
Description
The family is described based on 37 concatenated conserved marker genes phylogeny. The description is the same as that of its sole genus and species. Type genus is Freyrarchaeum
Classification
Archaea » Asgardarchaeota » Jordiarchaeia » Jordiarchaeales » Freyriarchaeaceae
References
Effective publication: Xie et al., 2022 [1]

Family Sigyniarchaeaceae

Etymology
[Si.gy.ni.ar.chae.a'ce.ae] N.L. neut. n. Sigyniarchaeum, referring to the type genus Sigyniarchaeum; -aceae, ending to denote a family; N.L. fem. pl. n. Sigyniarchaeaceae, the Sigyniarchaeum family
Nomenclatural type
Genus Sigyniarchaeum
Description
The family is described based on 37 concatenated conserved marker genes phylogeny. The description is the same as that of its sole genus and species. Type genus is Sigynarchaeum.
Classification
Archaea » Asgardarchaeota » “Lokiarchaeia” » Sigyniarchaeales » Sigyniarchaeaceae
References
Effective publication: Xie et al., 2022 [1]

Genus Sigyniarchaeum

Etymology
[Si.gy.ni.ar.chae'um] N.L. neut. n. archaeum, archaeon; N.L. neut. n. Sigyniarchaeum, an archaeon named after Sigyn, the god of victory in North mythology
Nomenclatural type
Species Sigyniarchaeum tengchongenseTs
Classification
Archaea » Asgardarchaeota » “Lokiarchaeia” » Sigyniarchaeales » Sigyniarchaeaceae » Sigyniarchaeum
References
Effective publication: Xie et al., 2022 [1]

Genus Freyriarchaeum

Etymology
[Frey.ri.ar.chae'um] N.L. neut. n. archaeum, archaeon; N.L. neut. n. Freyriarchaeum, an archaeon named after Freyr, the god of peace in Norse mythology
Nomenclatural type
Species Freyriarchaeum guaymasenseTs
Description
A genus established on the basis of GTDBTK analyses, AAI, and phylogenomic analyses. It is classified as a member of the Freyrarchaeaceae family. The type species of the genus is Freyrarchaeum guaymaensis.
Classification
Archaea » Asgardarchaeota » Jordiarchaeia » Jordiarchaeales » Freyriarchaeaceae » Freyriarchaeum
References
Effective publication: Xie et al., 2022 [1]

Species Sigyniarchaeum tengchongenseTs

Etymology
[ten.gchon.gen'se] N.L. neut. adj. tengchongense, pertaining to Tengchong, Yunnan province in southwest China
Nomenclatural type
NCBI Assembly: GCA_030587475.2 Ts
Description
This uncultured lineage is represented by the genome “SQRJ_234” consisting of 5.9 Mbps in 269 contigs with an estimated completeness of 91.59%, an estimated contamination of 4.67% and 21 tRNAs The MAG recovered from hot spring sediment.
Classification
Archaea » Asgardarchaeota » “Lokiarchaeia” » Sigyniarchaeales » Sigyniarchaeaceae » Sigyniarchaeum » Sigyniarchaeum tengchongenseTs
References
Effective publication: Xie et al., 2022 [1]
Assigned taxonomically: Xie et al., 2022 [1]

Species Freyriarchaeum guaymasenseTs

Etymology
[guay.mas.en'se] N.L. neut. adj. guaymasense, pertaining to Guaymas Basin, located in the Gulf of California, México
Nomenclatural type
NCBI Assembly: GCA_030587405.2 Ts
Description
This uncultured lineage is represented by the genome “GB_128” consisting of 3.8 Mbps in 131 contigs with an estimated completeness of 97.2%, an estimated contamination of 4.21% and 20 tRNAs The MAG recovered from Guaymas Basin sediment.
Classification
Archaea » Asgardarchaeota » Jordiarchaeia » Jordiarchaeales » Freyriarchaeaceae » Freyriarchaeum » Freyriarchaeum guaymasenseTs
References
Effective publication: Xie et al., 2022 [1]
Assigned taxonomically: Xie et al., 2022 [1]

References

  1. Xie et al. (2022). Expanding Asgard members in the domain of Archaea sheds new light on the origin of eukaryotes. Science China Life Sciences. DOI:10.1007/s11427-021-1969-6

Register List Certificate of Validation

On behalf of the Committee on the Systematics of Prokaryotes Described from Sequence Data (SeqCode Committee), we hereby certify that the Register List seqco.de/r:00m8misf submitted by Xie, Ruize and including 7 new names has been successfully validated.


Date of Priority: 2025-03-03 05:55 UTC
DOI: 10.57973/seqcode.r:00m8misf