Abstract
Ni.tro.so.te'nu.is. N.L. adj. nitrosus, full of natron; here intended to mean nitrous; L. masc. adj. tenuis slender; N.L. masc. n.
Candidatus
Nitrosotenuis a slender nitrite producer.
Candidatus
Nitrosotenuis: a slender nitrite producer.
Candidatus
Nitrosotenuis is a genus of
Thaumarchaeota
that can be found widely distributed in soils, freshwater, hot springs, subsurface, and activated sludge. They may be rods or spheres and may or may not have flagella. Similar to other known and described
Thaumarchaeota
,
Ca
. Nitrosotenuis are aerobic chemolithautotrophs that use energy gained from the oxidation of ammonia to nitrite to fix carbon via the modified 3‐hydroxypropionate/4‐hydroxybutyrate carbon fixation pathway. At this time, no pure culture of
Ca
. Nitrosotenuis exists, but some of the six available enrichments have only a few rare contaminants. It remains to be demonstrated whether the remaining bacterial contaminants provide essential compounds to
Ca
. Nitrosotenuis. Enrichments of
Ca
. Nitrosotenuis are intolerant to high salinity (>0.3%), although they are phylogenetically placed within the group I.1a
Thaumarchaeota
(
Ca
. Nitrosopumilales), which includes taxa that are widely distributed in the ocean.
DNA G + C content (mol%)
: 41.0–42.2.
Type species
:
Candidatus
Nitrosotenuis uzonensis
. Lebedeva, Hatzenpichler, Pelletier, Schuster, Hauzmayer, Bulaev, Grigor'eva, Galushko, Schmid, Palatinszky, Le Paslier, Daims and Wagner 2013, 8.
Taxonomic and Nomenclature Notes
According to the List of Prokaryotic names with Standing in Nomenclature (LPSN), the taxonomic status of the genus
Candidatus Nitrosotenuis
is: preferred name (not correct name) (last update, February 2025)
*
.
LPSN classification:
Archaea
/
Thermoproteati
/
Thermoproteota
/
Nitrososphaeria
/
Nitrosopumilales
/
Candidatus Nitrosotenuaceae
/
Candidatus Nitrosotenuis
The genus
Candidatus Nitrosotenuis
can also be recovered in the Genome Taxonomy Database (GTDB) as
g__Nitrosotenuis
(version v220)
**
.
GTDB classification:
d__Archaea
/
p__Thermoproteota
/
c__Nitrososphaeria
/
o__Nitrososphaerales
/
f__Nitrosopumilaceae
/
g__Nitrosotenuis
*
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