Nitrososphaeria

Abstract Ni.tro.so.sphae'ri.a. N.L. fem. n. Nitrososphaera the type genus of the type order of the class; N.L. suff. ‐ ia ending to denote a class, N.L. neut. pl. n. Nitrososphaeria the class of the order Nitrososphaerales . The Nitrososphaeria class encompasses all cultivated organisms within the phylum Thaumarchaeota . Members of the Nitrososphaeria have been isolated from soil, marine, estuarine, freshwater and geothermal ecosystems and wastewater treatment plants. On the basis of marker gene surveys, these organisms are present in virtually every environment, both moderate and extreme, making it the most broadly distributed group of Archaea known to date. All cultivated members of the Nitrososphaeria are chemolithoautotrophs that depend on the aerobic oxidation of ammonia. Members of this class share a specific set of information processing genes, distinguishing them from members of all other archaeal phyla. Taxonomic and Nomenclature Notes According to the List of Prokaryotic names with Standing in Nomenclature (LPSN), the taxonomic status of the class Nitrososphaeria is: correct name (last update, February 2025) * . LPSN classification: Archaea / Thermoproteati / Thermoproteota / Nitrososphaeria The class Nitrososphaeria can also be recovered in the Genome Taxonomy Database (GTDB) as c__Nitrososphaeria (version v220) ** . GTDB classification: d__Archaea / p__Thermoproteota / c__Nitrososphaeria * Meier‐Kolthoff et al. ( 2022 ). Nucleic Acids Res , 50 , D801 – D807 ; DOI: 10.1093/nar/gkab902 ** Parks et al. ( 2022 ). Nucleic Acids Res , 50 , D785 – D794 ; DOI: 10.1093/nar/gkab776