Species Clostridium josui

Name: Clostridium josui Sukhumavasi et al. 1988

Category: Species

Proposed as: sp. nov.

Etymology: jo’su.i. N.L. gen. masc. n. josui, of josu, the first four letters were obtained by combining the initial letters of the names of the authors, and the last letter was added to indicate a genitive

Pronunciation (Latin), gender: … JO-su-i, neuter

Type strain: DSM 25723; FERM P-9684; III; JCM 17888

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB011057 Analyse FASTA

Valid publication: Sukhumavasi J, Ohmiya K, Shimizu S, Ueno K. Clostridium josui sp. nov., a cellulolytic, moderate thermophilic species from Thai compost. Int. J. Syst. Bacteriol. 1988; 38:179-182. 🇯🇵

Nomenclatural status: validly published under the ICNP

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

Correct name: Ruminiclostridium josui (Sukhumavasi et al. 1988) Zhang et al. 2018

Risk group: 1

Synonyms:

Name	Kind
Ruminiclostridium josui (Sukhumavasi et al. 1988) Zhang et al. 2018	homotypic synonym, validly published under the ICNP

Notes:
- ❗ Clostridium josui 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 Clostridium.
- 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — 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 24 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 the genus.
- 🧍 According to Yarza et al. (2013), an "orphan species with designated type strains that were either not deposited in culture collections or whose type strain is currently not available from a recognized culture collection. FERM catalog is no longer available. Patent strain.". Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73. 🇩🇪
- 🧍 The type FERM P-9684 is a patent strain. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592. 🇫🇷

Parent taxon: Clostridium Prazmowski 1880 (Approved Lists 1980)

Assigned by: Sukhumavasi J, Ohmiya K, Shimizu S, Ueno K. Clostridium josui sp. nov., a cellulolytic, moderate thermophilic species from Thai compost. Int. J. Syst. Bacteriol. 1988; 38:179-182. 🇯🇵

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Record number: 783669

This LPSN page was printed on 2026-03-08 10:46:31

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Species Clostridium josui