Name: Heliobacterium modesticaldum Kimble et al. 1996

Category: Species

Proposed as: sp. nov.

Etymology: mo.des.ti.cal’dum. L. masc. adj. modestus, moderate; L. masc. adj. caldus, warm, hot; N.L. neut. adj. modesticaldum, moderately hot, named for its thermophilic character

Gender: neuter

Type strain: ATCC 51547; DSM 9504; Ice 1

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB100836 Analyse FASTA

Effective publication: Kimble LK, Mandelco L, Woese CR, Madigan MT. Heliobacterium modesticaldum, sp. nov., a thermophilic heliobacterium of hot springs and volcanic soils. Arch. Microbiol. 1995; 163:259-267.

IJSEM list: Anonymous. Validation list no. 59. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1996; 46:1189-1190.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Heliomicrobium modesticaldum (Kimble et al. 1996) Kyndt et al. 2021

Risk group: 1

• Synonyms:

  • Name	Kind
    Heliomicrobium modesticaldum (Kimble et al. 1996) Kyndt et al. 2021	homotypic synonym, validly published under the ICNP

• Notes:
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • ❗ Heliobacterium modesticaldum 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 Heliobacterium.
  • 😷 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 45 times in PubMed until 2024-03-28.

Parent taxon: Heliobacterium Gest and Favinger 1985

Assigned by: Kimble LK, Mandelco L, Woese CR, Madigan MT. Heliobacterium modesticaldum, sp. nov., a thermophilic heliobacterium of hot springs and volcanic soils. Arch. Microbiol. 1995; 163:259-267.

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Record number: 776874