Name: Labrys neptuniae Chou et al. 2007

Category: Species

Proposed as: sp. nov.

Etymology: nep.tu’ni.ae. N.L. gen. fem. n. neptuniae, of Neptunia, named because the type strain was isolated from Neptunia oleracea

Pronunciation (Latin), gender: LA-brys nep-TU-ni-a͡e, feminine

Type strain: BCRC 17578; Liujia-146; LMG 23578

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: DQ417335 Analyse FASTA

Valid publication: Chou YJ, Elliott GN, James EK, Lin KY, Chou JH, Sheu SY, Sheu DS, Sprent JI, Chen WM. Labrys neptuniae sp. nov., isolated from root nodules of the aquatic legume Neptunia oleracea. Int J Syst Evol Microbiol 2007; 57:577-581. 🇹🇼

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 57, part 3 of the IJSEM. Int J Syst Evol Microbiol 2007; 57:1173-1174.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Labrys portucalensis Carvalho et al. 2008	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Csepanyi et al. (2025), this species is an earlier heterotypic synonym of Labrys portucalensis Carvalho et al. 2008. Publication: Csepanyi A, Tancsics A, Papai M, Baka E, Toth E, Boka K, Daood H, Szabo I, Kriszt B. Description of Labrys sedimenti sp. nov., isolated from a diclofenac-degrading enrichment culture, and genome-based reclassification of Labrys portucalensis as a later heterotypic synonym of Labrys neptuniae. Int J Syst Evol Microbiol 2025; 75:6778. 🇭🇺
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 75, part 5 of the IJSEM. Int J Syst Evol Microbiol 2025; 75:6824.
  • 😷 The risk group for Germany has been imported on 2026-08-13. 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 2026-06-11.

Parent taxon: Labrys Vasilyeva and Semenov 1985

Assigned by: Chou YJ, Elliott GN, James EK, Lin KY, Chou JH, Sheu SY, Sheu DS, Sprent JI, Chen WM. Labrys neptuniae sp. nov., isolated from root nodules of the aquatic legume Neptunia oleracea. Int J Syst Evol Microbiol 2007; 57:577-581. 🇹🇼

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Record number: 786055