SeqCode Registry
Register List https://seqco.de/r:lhm19uk7 [2026]

Methanobacterium limaniae sp. nov. and Methanocella ebodensis sp. nov.

Submitted by Tian, Weitao

Abstract

This Register List documents the genome-based description of two novel methanogenic archaeal species, Methanobacterium limaniae sp. nov. and Methanocella ebodensis sp. nov., in accordance with the SeqCode. Both taxa are represented by high-quality genome sequences recovered from enrichment cultures derived from arid desert biocrusts. Phylogenomic analyses place these lineages as distinct species within the genera Methanobacterium and Methanocella, respectively, clearly separated from all previously described taxa. These organisms expand the known ecological and genomic diversity of methanogens inhabiting oxic and desiccation-prone terrestrial environments.

Species Methanobacterium limaniae

Etymology
[li.ma'ni.ae] N.L. gen. n. limaniae, of a Liman, referring specifically to the Liman irrigation systems employed in the Negev Desert
Nomenclatural type
NCBI Assembly: GCA_049677355.1 Ts
Description
Phylogenetically affiliated with the genus Methanobacterium, phylum Methanobacteriota. The genome consists of one circular chromosome of 3,168,381 bp. The DNA G + C content is 33.45 mol%. Strain Methanobacterium limaniae EP was cultivated from biocrust of the Negev desert, Israel. Soil hydrogenotrophic methanogen with a rod-shaped morphology. Cells are slender and elongated, typically measuring ~0.5 µm in diameter and 4-5 µm in length. The strain was routinely cultured with 80% H2 at 32°C in DSM17711 medium.
Classification
Archaea » Methanobacteriota » Methanobacteria » Methanobacteriales » Methanobacteriaceae » Methanobacterium » Methanobacterium limaniae
References
Effective publication: Tian et al., 2026 [1]
Corrigendum: Anonymous, 2026 [2] (from “Methanobacterium limanae”)
Registry URL
https://seqco.de/i:50974

Species Methanocella ebodensis

Etymology
[e.bo.den'sis] N.L. fem. adj. ebodensis, of Eboda, a significant ancient Nabataean city situated along the "Incense Route", close to the location where the strain was isolated.
Nomenclatural type
NCBI Assembly: GCA_049676595.1 Ts
Description
Phylogenetically affiliated with the genus Methanocella, phylum Halobacteriota. The genome consists of one circular chromosome of 3,614,771 bp. The DNA G + C content is 54.73 mol%. Strain Methanocella ebodensis WT was cultivated from biocrust of the Negev desert, Israel. Soil hydrogenotrophic methanogen with a rod-shaped morphology. Cells typically measure ~0.8 µm in diameter and 7-8 µm in length. The strain was routinely cultured with 10% H2 at 37°C in fresh water basal medium and subjected to 5% air regularly.
Classification
Archaea » Halobacteriota » Methanocellia » Methanocellales » Methanocellaceae » Methanocella » Methanocella ebodensis
References
Effective publication: Tian et al., 2026 [1]
Assigned taxonomically: Sakai et al., 2008 [3]
Registry URL
https://seqco.de/i:50976

References

  1. Tian et al. (2026). Cultivation and genomic characterization of novel methanogens from arid desert biocrust. ISME Communications. DOI:10.1093/ismeco/ycag013
  2. Anonymous (2026). Correction to: Cultivation and genomic characterization of novel methanogens from arid desert biocrust. ISME Communications. DOI:10.1093/ismeco/ycag047
  3. Sakai et al. (2008). Methanocella paludicola gen. nov., sp. nov., a methane-producing archaeon, the first isolate of the lineage 'Rice Cluster I', and proposal of the new archaeal order Methanocellales ord. nov. INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY. DOI:10.1099/ijs.0.65571-0

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:lhm19uk7 submitted by Tian, Weitao and including 2 new names has been successfully validated.


Date of Priority: 2026-01-27 08:08 UTC
DOI: 10.57973/seqcode.r:lhm19uk7