Name: Roseiflexus castenholzii Hanada et al. 2002

Category: Species

Proposed as: sp. nov.

Etymology: cas.ten.holz’i.i. N.L. gen. masc. n. castenholzii, of Castenholz, named after Richard W. Castenholz, an American microbiologist who notably contributed to our knowledge of thermophilic filamentous phototrophs

Gender: masculine

Type strain: DSM 13941; HLO8; JCM 11240; NBRC 100045

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB041226 Analyse FASTA

Valid publication: Hanada S, Takaichi S, Matsuura K, Nakamura K. Roseiflexus castenholzii gen. nov., sp. nov., a thermophilic, filamentous, photosynthetic bacterium that lacks chlorosomes. Int J Syst Evol Microbiol 2002; 52:187-193.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 52, part 1 of the IJSEM. Int J Syst Evol Microbiol 2002; 52:293-295.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • 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 Roseiflexus Hanada et al. 2002. Publication: Hanada S, Takaichi S, Matsuura K, Nakamura K. Roseiflexus castenholzii gen. nov., sp. nov., a thermophilic, filamentous, photosynthetic bacterium that lacks chlorosomes. Int J Syst Evol Microbiol 2002; 52:187-193.
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 38 times in PubMed until 2024-03-27.

Parent taxon: Roseiflexus Hanada et al. 2002

Assigned by: Hanada S, Takaichi S, Matsuura K, Nakamura K. Roseiflexus castenholzii gen. nov., sp. nov., a thermophilic, filamentous, photosynthetic bacterium that lacks chlorosomes. Int J Syst Evol Microbiol 2002; 52:187-193.

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Record number: 780568