Valid publication of four additional phylum names

Abstract

The International Code of Nomenclature of Prokaryotes (ICNP) now includes the phylum category. For the purpose of the valid publication of their names under the ICNP, we consider here four phyla. Slightly modified descriptions of ‘ Abditibacteriota ’ Tahon et al. 2018 and ‘ Desulfobacterota ’ Waite et al. 2020 are provided to meet the requirements of the ICNP for phylum names. Methanobacteriota is proposed as a substitute for ‘ Euryarchaeota ’ Garrity and Holt 2021, while Nanobdellota is proposed to replace ‘ Nanoarchaeota ’ Huber et al. 2002, based on the genus Nanobdella Kato et al. 2022.

Valid publication of names of two domains and seven kingdoms of prokaryotes

“…The oldest type genus of an archaeal phylum with a validly published name among the 42 phyla first proposed under the ICNP [3, 4] is Thermoproteus Zillig and Stetter 1982 [23, 24]. More recently, however, Methanobacteriota has been validly published [7], making Methanobacterium Kluyver and van Niel 1936 (Approved Lists 1980) [17, 25] the genus with the first validly published name that is also the type genus of an archaeal phylum. Methanobacterium is well suitable as the type genus for Archaea .…”

“…Their analysis also showed an early branching and an isolated position, respectively, of the phyla know known as Aquificota , Fusobacteriota and Thermotogota . All other bacterial phyla considered in the study were included in a group called ‘ Hydrobacteria ’ [30]; the validly published names of these phyla are now Bacteroidota , Chlamydiota , Chlorobiota , Desulfobacterota , Myxococcota , Planctomycetota , Pseudomonadota and Spirochaetota [3–7]. This makes ‘ Hydrobacteria ’ and ‘ Terrabacteria ’ largely, but not entirely [47], equivalent to Gracilicutes Gibbons and Murray 1978 (Approved Lists 1980) and Firmicutes corrig.…”

“…The description is as given for this division with the following additions. The kingdom contains the phyla with a validly published name Abditibacteriota , Acidobacteriota , Aquificota , Atribacterota , Bacteroidota , Balneolota , Bdellovibrionota , Caldisericota , Calditrichota , Campylobacterota , Chlamydiota , Chlorobiota , Chrysiogenota , Coprothermobacterota , Deferribacterota , Desulfobacterota , Dictyoglomerota , Elusimicrobiota , Fibrobacterota , Gemmatimonadota , Ignavibacteriota , Kiritimatiellota , Lentisphaerota , Myxococcota , Nitrospinota , Nitrospirota , Planctomycetota , Pseudomonadota , Rhodothermota , Spirochaetota , Thermodesulfobacteriota , Thermodesulfobiota , Thermomicrobiota , Thermosulfidibacterota and Verrucomicrobiota [3, 4, 7], some of which may be considered synonyms. The properties of the kingdom are those of the included phyla.…”

“…The 2022 revision of the International Code of Nomenclature of Prokaryotes, or ICNP [1], lists the phylum category together with the other categories accepted in prokaryotic nomenclature, based on recent emendations [2]. The inclusion of this category led to the valid publication of 42 phylum names [3, 4], which was followed by the valid publication of Cyanobacteriota in 2022 [5, 6] and of four additional phylum names in 2023 [7]. The phylum name Microcaldota was recently proposed [8] and is included in Validation List No.…”

“…Similarly, appropriate taxonomic concepts from the literature that fit the kingdom rank [13] are considered to propose names for valid publication according to the new rules of the ICNP. Where appropriate, the proposed names are attributed to the authors of the original taxonomic concepts [3, 4, 7, 15]. The proper citation of these names would have to be in accordance with Rule 33b, Chapter 4(B)(1) and Chapter 4(B)(2) of the ICNP [1].…”