Name: Intrasporangium calvum Kalakoutskii et al. 1967 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: cal.vum. L. neut. adj. calvum, bald, hairless, referring to the absence of aerial mycelium

Gender: neuter

Type strain: ATCC 23552; DSM 43043; IFO 12989; JCM 3097; NBRC 12989; NRRL B-3866; VKM Ac-701

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ566282 Analyse FASTA

Effective publication: Kalakoutskii LV, Kirillova IP, Krassilnikov NA. A new genus of the Actinomycetales, Intrasporangium gen. nov. Journal of General Microbiology 1967; 48:79-85.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Yang et al. 2012 Yang LL, Ao T, Wang XH, He J, Klenk HP, Tang SK, Li WJ. Proposal of Intrasporangium mesophilum sp. nov., and reclassification of Humihabitans oryzae Kageyama et al. 2007 as Intrasporangium oryzae comb. nov. Int J Syst Evol Microbiol 2012; 62:1037-1041. Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 62, part 5 of the IJSEM. Int J Syst Evol Microbiol 2012; 62:1723-1724.
  • Nouioui et al. 2018 Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007. Oren A, Garrity GM. List of changes in taxonomic opinion no. 29. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:13-32.

• Notes:
  • 🥇 Nomenclatural type of the genus Intrasporangium Kalakoutskii et al. 1967 (Approved Lists 1980). Publication: Kalakoutskii LV, Kirillova IP, Krassilnikov NA. A new genus of the Actinomycetales, Intrasporangium gen. nov. Journal of General Microbiology 1967; 48:79-85.
  • 😷 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.
  • 🎓 Name mentioned 10 times in PubMed until 2024-03-27.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Del Rio TG, Chertkov O, Yasawong M, Lucas S, Deshpande S, Cheng JF, Detter C, Tapia R, Han C, Goodwin L, et al. Complete genome sequence of Intrasporangium calvum type strain (7 KIP). Stand Genomic Sci 2010; 3:294-303.

Parent taxon: Intrasporangium Kalakoutskii et al. 1967 (Approved Lists 1980)

Assigned by: Kalakoutskii LV, Kirillova IP, Krassilnikov NA. A new genus of the Actinomycetales, Intrasporangium gen. nov. Journal of General Microbiology 1967; 48:79-85.

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Record number: 777036