Abstract
Ha.lo.re.di.vi'vus. Gr. masc. n.
hals
,
halos
salt; L. masc. adj.
redivivus
renewed, renovated; N.L. masc. n.
Haloredivivus
a reconstructed salty organism.
The genus
Candidatus
Haloredivivus was established based on a sequence of a single‐cell‐amplified genome recovered from a solar saltern pond of intermediate salinity in Spain.
Ca
. Haloredivivus is phylogenetically affiliated with members of the
Candidatus
Nanohaloarchaeota branch (
Candidatus
Nanosalina,
Candidatus
Nanosalinicola corrig., and
Candidatus
Nanopetraeus corrig.) of the archaeal DPANN superphylum. Analysis of the ∼1.2 Mb genome of
Ca
. Haloredivivus with 42.1% G + C suggests that the organism leads a photoheterotrophic lifestyle and may be able to degrade different polysaccharides. The low median isoelectric point for the predicted proteins suggests a “salt‐in” strategy for osmotic balance. Gene sequences affiliated with
Ca
. Haloredivivus were recovered from a salt lake in Romania and from soda lakes in Siberia.
DNA G + C content (mol%)
: 42.0–42.1 (genome sequence).
Type species
: Not assigned.
Taxonomic and Nomenclature Notes
According to the List of Prokaryotic names with Standing in Nomenclature (LPSN), the taxonomic status of the genus
Candidatus Haloredivivus
is: preferred name (not correct name) (last update, February 2025)
*
.
LPSN classification:
Archaea
/
Nanobdellati
/
Candidatus Nanohalarchaeota
/
Candidatus Nanohaloarchaea
/
incertae sedis
/
incertae sedis
/
Candidatus Haloredivivus
Candidatus Haloredivivus
could not be recovered in GTDB
**
.
*
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