Name: Alkalimicrobium pacificum Zhang et al. 2015

Category: Species

Proposed as: sp. nov.

Etymology: pa.ci’fi.cum. L. neut. adj. pacificum, pertaining to the Pacific Ocean from which the type strain was isolated

Pronunciation (Latin), gender: … pa-KI-fi-kum, neuter

Type strain: CGMCC 1.12763; F15; JCM 19851; LMG 28107; MCCC 1A09948

Conduct genome-based taxonomy at

16S rRNA gene: KF924609 Analyse FASTA

Valid publication: Zhang G, Yang Y, Wang S, Sun Z, Jiao K. Alkalimicrobium pacificum gen. nov., sp. nov., a marine bacterium in the family Rhodobacteraceae. Int J Syst Evol Microbiol 2015; 65:2453-2458. 🇨🇳

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 65, part 8 of the IJSEM. Int J Syst Evol Microbiol 2015; 65:3768-3770.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Mameliella alba Zheng et al. 2010

Risk group: 1

• Synonyms:

  • Name	Kind
    Ponticoccus lacteus Yang et al. 2015	heterotypic synonym, validly published under the ICNP
    Mameliella atlantica Xu et al. 2015	heterotypic synonym, validly published under the ICNP
    "Antarctobacter alba" (Zheng et al. 2010) Xu et al. 2025	heterotypic synonym, not validly published
    Mameliella alba Zheng et al. 2010	heterotypic synonym, validly published under the ICNP
    Mameliella phaeodactyli Chen et al. 2015	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:
  • 🥇 Nomenclatural type of the genus Alkalimicrobium Zhang et al. 2015. Publication: Zhang G, Yang Y, Wang S, Sun Z, Jiao K. Alkalimicrobium pacificum gen. nov., sp. nov., a marine bacterium in the family Rhodobacteraceae. Int J Syst Evol Microbiol 2015; 65:2453-2458. 🇨🇳
  • ⏲ According to Liu et al. (2018), this species is a later heterotypic synonym of Mameliella alba Zheng et al. 2010. Publication: Liu Y, Zhang X, Lai Q, Shao Z. Reclassification of Mameliella phaeodactyli, Mameliella atlantica, Ponticoccus lacteus and Alkalimicrobium pacificum as later heterotypic synonyms of Mameliella alba and an emended description of Mameliella alba. Int J Syst Evol Microbiol 2018; 68:1047-1051. 🇨🇳
  • ⏲ According to Liu et al. (2018), this species is a later heterotypic synonym of "Antarctobacter alba" (Zheng et al. 2010) Xu et al. 2025. Publication: Liu Y, Zhang X, Lai Q, Shao Z. Reclassification of Mameliella phaeodactyli, Mameliella atlantica, Ponticoccus lacteus and Alkalimicrobium pacificum as later heterotypic synonyms of Mameliella alba and an emended description of Mameliella alba. Int J Syst Evol Microbiol 2018; 68:1047-1051. 🇨🇳
  • 🏢 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 68, part 4 of the IJSEM. Int J Syst Evol Microbiol 2018; 68:2134-2136.
  • ❗ Alkalimicrobium pacificum 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 Alkalimicrobium.
  • 😷 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.

Parent taxon: Alkalimicrobium Zhang et al. 2015

Assigned by: Zhang G, Yang Y, Wang S, Sun Z, Jiao K. Alkalimicrobium pacificum gen. nov., sp. nov., a marine bacterium in the family Rhodobacteraceae. Int J Syst Evol Microbiol 2015; 65:2453-2458. 🇨🇳

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Record number: 793073