Name: Caldisphaera lagunensis Itoh et al. 2003

Category: Species

Proposed as: sp. nov.

Etymology: la.gu.nen’sis. N.L. fem. adj. lagunensis, pertaining to Laguna, the province in the Philippines where the type strain was isolated

Pronunciation (Latin), gender: … la-gu-NEN-sis, feminine

Type strain: ANMR 165; DSM 15908; IC-154; JCM 11604; MCC-UPLB 1331

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB087499 Analyse FASTA

Valid publication: Itoh T, Suzuki K, Sanchez PC, Nakase T. Caldisphaera lagunensis gen. nov., sp. nov., a novel thermoacidophilic crenarchaeote isolated from a hot spring at Mt Maquiling, Philippines. Int J Syst Evol Microbiol 2003; 53:1149-1154. 🇯🇵

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 53, part 4 of the IJSEM. Int J Syst Evol Microbiol 2003; 53:1703-1705.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Caldisphaera Itoh et al. 2003. Publication: Itoh T, Suzuki K, Sanchez PC, Nakase T. Caldisphaera lagunensis gen. nov., sp. nov., a novel thermoacidophilic crenarchaeote isolated from a hot spring at Mt Maquiling, Philippines. Int J Syst Evol Microbiol 2003; 53:1149-1154. 🇯🇵
  • 😷 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.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683. 🇺🇸

Parent taxon: Caldisphaera Itoh et al. 2003

Assigned by: Itoh T, Suzuki K, Sanchez PC, Nakase T. Caldisphaera lagunensis gen. nov., sp. nov., a novel thermoacidophilic crenarchaeote isolated from a hot spring at Mt Maquiling, Philippines. Int J Syst Evol Microbiol 2003; 53:1149-1154. 🇯🇵

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Record number: 774348