Species Pseudalkalibacillus hwajinpoensis

Name: Pseudalkalibacillus hwajinpoensis (Yoon et al. 2004) Joshi et al. 2022

Category, proposed as: species, comb. nov.

Basonym: Bacillus hwajinpoensis Yoon et al. 2004

Etymology: hwa.jin.po.en’sis. N.L. masc. adj. hwajinpoensis, of Hwajinpo, a beach of the East Sea in Korea, where the type strain was isolated [probably better: hwajinponensis]

Pronunciation (Latin), gender: pse͡ud-al-ka-li-ba-KIL-lus hwa-jin-po-EN-sis, masculine

Type strain: DSM 16206; JCM 11807; KCCM 41641; LMG 24749; SW-72

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF541966 Analyse FASTA

Effective publication: Joshi A, Thite S, Karodi P, Joseph N, Lodha T. Alkalihalobacterium elongatum gen. nov. sp. nov.: An Antibiotic-Producing Bacterium Isolated From Lonar Lake and Reclassification of the Genus Alkalihalobacillus Into Seven Novel Genera. Front Microbiol 2021; 12:722369. 🇮🇳

IJSEM list: Oren A, Garrity GM. Validation list no. 203. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2022; 72:5167.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Synonyms:

  • Name	Kind
    "Anaerobacillus macyae" (Santini et al. 2004) Zavarzina et al. 2009	heterotypic synonym, not validly published
    Alkalihalobacillus hwajinpoensis (Yoon et al. 2004) Patel and Gupta 2020	homotypic synonym, validly published under the ICNP
    Bacillus macyae Santini et al. 2004	heterotypic synonym, validly published under the ICNP
    Alkalihalobacillus macyae (Santini et al. 2004) Patel and Gupta 2020	heterotypic synonym, validly published under the ICNP
    Bacillus hwajinpoensis Yoon et al. 2004	homotypic synonym, validly published under the ICNP
    Guptibacillus hwajinpoensis (Yoon et al. 2004) Bello et al. 2025	homotypic synonym, validly published under the ICNP
    "Pseudalkalibacillus macyae" (Santini et al. 2004) Joshi et al. 2021	heterotypic synonym, not validly published

• Notes:
  • ⏰ According to Bello et al. (2025), this species is an earlier heterotypic synonym of "Anaerobacillus macyae" (Santini et al. 2004) Zavarzina et al. 2009. Publication: Bello S, Rudra B, Schellhorn HE. Phylogenomic studies and molecular markers clarifying the evolutionary relationships and classification of Pseudalkalibacillus species: proposal for the family Guptibacillaceae fam. nov. harbouring the genera Guptibacillus gen. nov. and Exobacillus gen. nov. Int J Syst Evol Microbiol 2025; 75:6757. 🇨🇦
  • ⏰ According to Bello et al. (2025), this species is an earlier heterotypic synonym of Alkalihalobacillus macyae (Santini et al. 2004) Patel and Gupta 2020. Publication: Bello S, Rudra B, Schellhorn HE. Phylogenomic studies and molecular markers clarifying the evolutionary relationships and classification of Pseudalkalibacillus species: proposal for the family Guptibacillaceae fam. nov. harbouring the genera Guptibacillus gen. nov. and Exobacillus gen. nov. Int J Syst Evol Microbiol 2025; 75:6757. 🇨🇦
  • ⏰ According to Bello et al. (2025), this species is an earlier heterotypic synonym of Bacillus macyae Santini et al. 2004. Publication: Bello S, Rudra B, Schellhorn HE. Phylogenomic studies and molecular markers clarifying the evolutionary relationships and classification of Pseudalkalibacillus species: proposal for the family Guptibacillaceae fam. nov. harbouring the genera Guptibacillus gen. nov. and Exobacillus gen. nov. Int J Syst Evol Microbiol 2025; 75:6757. 🇨🇦
  • ⏰ According to Bello et al. (2025), this species is an earlier heterotypic synonym of "Pseudalkalibacillus macyae" (Santini et al. 2004) Joshi et al. 2021. Publication: Bello S, Rudra B, Schellhorn HE. Phylogenomic studies and molecular markers clarifying the evolutionary relationships and classification of Pseudalkalibacillus species: proposal for the family Guptibacillaceae fam. nov. harbouring the genera Guptibacillus gen. nov. and Exobacillus gen. nov. Int J Syst Evol Microbiol 2025; 75:6757. 🇨🇦
  • 🏢 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 phylogenomic assignment score of this taxon is 0.00452 (N = 18).
  • 😷 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 1 time in PubMed until 2026-06-11.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as 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: Pseudalkalibacillus Joshi et al. 2022

Assigned by: Joshi A, Thite S, Karodi P, Joseph N, Lodha T. Alkalihalobacterium elongatum gen. nov. sp. nov.: An Antibiotic-Producing Bacterium Isolated From Lonar Lake and Reclassification of the Genus Alkalihalobacillus Into Seven Novel Genera. Front Microbiol 2021; 12:722369. 🇮🇳

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Record number: 26621