Name: Loktanella sediminum Liang et al. 2015

Category: Species

Proposed as: sp. nov.

Etymology: se.di’mi.num. L. gen. neut. pl. n. sediminum, of sediments, pertaining to source of isolation

Gender: feminine

Type strain: DSM 28715; JCM 30120; MCCC 1K00257; S3B03

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: KJ620985 Analyse FASTA

Valid publication: Liang J, Zhang Z, Liu Y, Wang M, Zhang XH. Loktanella sediminum sp. nov., isolated from marine surface sediment. Int J Syst Evol Microbiol 2015; 65:686-691.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 65, part 2 of the IJSEM. Int J Syst Evol Microbiol 2015; 65:1397-1399.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Cognatiyoonia sediminum (Liang et al. 2015) Wirth and Whitman 2018

Risk group: 1

• Synonyms:

  • Name	Kind
    Cognatiyoonia sediminum (Liang et al. 2015) Wirth and Whitman 2018	homotypic synonym, validly published under the ICNP

• Emendations:
  • Hördt et al. 2020 Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468. Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • ❗ Loktanella sediminum is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Loktanella.
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 2 times in PubMed until 2025-06-04.
  • 🧍 According to Ludwig et al. (2021), this "species affiliates away from its type species and may be reclassified as a new genus". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218.

Parent taxon: Loktanella Van Trappen et al. 2004

Assigned by: Liang J, Zhang Z, Liu Y, Wang M, Zhang XH. Loktanella sediminum sp. nov., isolated from marine surface sediment. Int J Syst Evol Microbiol 2015; 65:686-691.

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Record number: 792552