Name: Sphingobium hydrophobicum Chen et al. 2016

Category: Species

Proposed as: sp. nov.

Etymology: hy.dro.pho’bi.cum. N.L. neut. adj. hydrophobicum, hydrophobic

Pronunciation, gender: hy-dro-P^HO-bi-kum, neuter

Type strain: C1; CCTCC AB 2015198; KCTC 42740

Conduct genome-based taxonomy at

16S rRNA gene: KR712272 Analyse FASTA

Valid publication: Chen X, Wang H, Xu J, Song D, Sun G, Xu M. Sphingobium hydrophobicum sp. nov., a hydrophobic bacterium isolated from electronic-waste-contaminated sediment. Int J Syst Evol Microbiol 2016; 66:3912-3916.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 66, part 10 of the IJSEM. Int J Syst Evol Microbiol 2017; 67:4-6.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Sphingobium xenophagum (Stolz et al. 2000) Pal et al. 2006

Risk group: 1

• Synonyms:

  • Name	Kind
    Sphingomonas xenophaga Stolz et al. 2000	heterotypic synonym, validly published under the ICNP
    Sphingobium xenophagum (Stolz et al. 2000) Pal et al. 2006	heterotypic 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:
  • ⏲ According to Feng et al. (2019), this species is a later heterotypic synonym of Sphingobium xenophagum (Stolz et al. 2000) Pal et al. 2006. Publication: Feng GD, Chen MB, Zhang XJ, Wang DD, Zhu HH. Whole genome sequences reveal the presence of 11 heterotypic synonyms in the genus Sphingobium and emended descriptions of Sphingobium indicum, Sphingobium fuliginis, Sphingobium xenophagum and Sphingobium cupriresistens. Int J Syst Evol Microbiol 2019; 69:2161-2165.
  • ⏲ According to Feng et al. (2019), this species is a later heterotypic synonym of Sphingomonas xenophaga Stolz et al. 2000. Publication: Feng GD, Chen MB, Zhang XJ, Wang DD, Zhu HH. Whole genome sequences reveal the presence of 11 heterotypic synonyms in the genus Sphingobium and emended descriptions of Sphingobium indicum, Sphingobium fuliginis, Sphingobium xenophagum and Sphingobium cupriresistens. Int J Syst Evol Microbiol 2019; 69:2161-2165.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 69, part 7 of the IJSEM. Int J Syst Evol Microbiol 2019; 69:2963-2965.
  • ❗ Sphingobium hydrophobicum 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 Sphingobium.
  • 😷 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 6 times in PubMed until 2025-06-04.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of other species in the genus.

Parent taxon: Sphingobium Takeuchi et al. 2001

Assigned by: Chen X, Wang H, Xu J, Song D, Sun G, Xu M. Sphingobium hydrophobicum sp. nov., a hydrophobic bacterium isolated from electronic-waste-contaminated sediment. Int J Syst Evol Microbiol 2016; 66:3912-3916.

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Record number: 794675