Genus Halocatena

Name: Halocatena Verma et al. 2020

Category, proposed as: genus, gen. nov.

Etymology: Ha.lo.ca.te’na. Gr. masc. n. hals (gen. halos), salt; L. fem. n. catena, chain; N.L. fem. n. Halocatena, a salty chain

Gender, pronunciation (Latin): feminine (stem: Halocaten-), ha-lo-ka-TE-na

Type species: Halocatena pleomorpha Verma et al. 2020

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Verma A, Pal Y, Kumar P, Krishnamurthi S. Halocatena pleomorpha gen. nov. sp. nov., an extremely halophilic archaeon of family Halobacteriaceae isolated from saltpan soil. Int J Syst Evol Microbiol 2020; 70:3693-3700. 🇮🇳

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 6 of the IJSEM. Int J Syst Evol Microbiol 2020; 70:4848-4850.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Actinarchaeum corrig. Tang et al. 2024	heterotypic synonym, validly published under the ICNP
    Actinoarchaeum Tang et al. 2024	heterotypic synonym, inaccurate spelling

• Emendations:
  • Wu et al. 2023 Wu ZP, Zheng XW, Sun YP, Wang BB, Hou J, Cui HL. Halocatena marina sp. nov., a novel filamentous halophilic archaeon isolated from marine tidal flat and emended description of the genus Halocatena. Extremophiles 2023; 27:7. 🇨🇳 Oren A, Göker M. List of changes in taxonomic opinion no. 38. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2023; 73:5923.
    Notes:
    • ⊕ Emendation accompanied by the proposal of 1 new species in the genus.

• Notes:
  • 🧕 Cui et al. (2023) assigned this genus to the family Haloarculaceae Gupta et al. 2016. Publication: Cui C, Han D, Hou J, Cui HL. Genome-based classification of the class Halobacteria and description of Haladaptataceae fam. nov. and Halorubellaceae fam. nov. Int J Syst Evol Microbiol 2023; 73:5984. 🇨🇳
  • 🧕 Zhu et al. (2025) assigned this genus to the family Natronomonadaceae Zhu et al. 2025. Publication: Zhu LR, Mao YL, Hu Y, Sun YP, Hou J, Cui HL. Genome-based taxonomy of the family Haloarculaceae, proposal of Natronomonadaceae fam. nov., and description of four novel halophilic archaea from two saline lakes and a marine solar saltern. Syst Appl Microbiol 2025; 48:126592. 🇨🇳
  • 🖹 Minimal standards for the description of new taxa in this group were published in 2024. Publication: Cui HL, Hou J, Amoozegar MA, Dyall-Smith ML, de la Haba RR, Minegishi H, Montalvo-Rodriguez R, Oren A, Sanchez-Porro C, Ventosa A, et al. Proposed minimal standards for description of new taxa of the class Halobacteria. Int J Syst Evol Microbiol 2024; 74:6290. 🇮🇱
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Oren A, Arahal DR, Ventosa A. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Halobacteria and Subcommittee on the Taxonomy of Halomonadaceae. Minutes of the joint open meeting, 28 June 2022, Alicante, Spain. Int J Syst Evol Microbiol 2022; 72:5584. 🇮🇱
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Oren A, Arahal DR, Ventosa A. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Halobacteria and Subcommittee on the Taxonomy of Halomonadaceae: minutes of the joint open meeting, 25 November 2025, Oaxaca, Mexico. Int J Syst Evol Microbiol 2026; 76:7065. 🇮🇱
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Zhu et al. (2025). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • 🎰 The BRCs most frequently used for deposits in this group are: CGMCC: 4; JCM: 3; DSM: 2; KCTC: 1; MTCC: 1.

Subdivision:

Number of child taxa with a validly published and correct name: 4
Number of child taxa with a validly published name, including synonyms: 4
Total number of child taxa: 5

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Halocatena halophila (Tang et al. 2024) Zhu et al. 2025	validly published under the ICNP	correct name
    "Halocatena halophila" (Tang et al. 2024) Gupta et al. 2025	not validly published	synonym
    Halocatena marina Wu et al. 2023	validly published under the ICNP	correct name
    Halocatena pleomorpha Verma et al. 2020	validly published under the ICNP	correct name
    Halocatena salina Wu et al. 2022	validly published under the ICNP	correct name

Parent taxon: Halobacteriaceae Gibbons 1974 (Approved Lists 1980)

Assigned by: Verma A, Pal Y, Kumar P, Krishnamurthi S. Halocatena pleomorpha gen. nov. sp. nov., an extremely halophilic archaeon of family Halobacteriaceae isolated from saltpan soil. Int J Syst Evol Microbiol 2020; 70:3693-3700. 🇮🇳

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Record number: 8287