Name: Sphingopyxis baekryungensis Yoon et al. 2005

Category: Species

Proposed as: sp. nov.

Etymology: baek.ry.ung.en’sis. N.L. fem. adj. baekryungensis, of Baekryung Island, an island of the Yellow Sea in Korea where the type strain was isolated

Pronunciation, gender: ba͡ek-ry-un͡g-EN-sis, feminine

Type strain: DSM 16222; KCTC 12231; SW-150

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AY608604 Analyse FASTA

Valid publication: Yoon JH, Lee CH, Yeo SH, Oh TK. Sphingopyxis baekryungensis sp. nov., an orange-pigmented bacterium isolated from sea water of the Yellow Sea in Korea. Int J Syst Evol Microbiol 2005; 55:1223-1227.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 55, part 3 of the IJSEM. Int J Syst Evol Microbiol 2005; 55:1747-1749.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Novosphingopyxis baekryungensis (Yoon et al. 2005) Feng et al. 2020

Risk group: 1

• Synonyms:

  • Name	Kind
    Elkelangia baekryungensis (Yoon et al. 2005) Hördt et al. 2020	homotypic synonym, validly published under the ICNP, illegitimate name
    Novosphingopyxis baekryungensis (Yoon et al. 2005) Feng et al. 2020	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Sphingopyxis baekryungensis 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 Sphingopyxis.
  • 😷 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 3 times in PubMed until 2025-06-04.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: 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.

Parent taxon: Sphingopyxis Takeuchi et al. 2001

Assigned by: Yoon JH, Lee CH, Yeo SH, Oh TK. Sphingopyxis baekryungensis sp. nov., an orange-pigmented bacterium isolated from sea water of the Yellow Sea in Korea. Int J Syst Evol Microbiol 2005; 55:1223-1227.

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Record number: 781046