Abstract

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. Nanohaloarchaeota / “Incertae sedis” / “Incertae sedis” / “Incertae sedis” / Candidatus Haloredivivus 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.

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