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Candidatus Nanopusillus

Book · · Bergey's Manual of Systematics of Archaea and Bacteria
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The genus Candidatus Nanopusillus is comprised of small coccoid cells (~100–400 nm) that live epibiotically on the surface of archaeal hosts. The first described species, Candidatus Nanopusillus acidilobi, is an anaerobic, hyperthermophilic acidophile whose best growth is observed at 82°C, pH 3.6, cultivated from a hot spring in Yellowstone National Park. Ca. Nanopusillus acidilobi cells associate with the Crenarchaeota host organism Acidilobus sp. 7A. Archaeal flagella (archaella) have been predicted from the genome sequence and shown to be expressed in the proteome. Additionally, a second putative species, Candidatus Nanopusillus massiliensis, was recently reported from human dental plaque and associates with the methanogen Methanobrevibacter oralis. The genome consists of a single scaffold which is highly fragmented by spans of ambiguous nucleotides, with 16S rRNA gene fragments from Bacteria. Both species have small genomes (~0.6 Mb) encoding few biosynthetic genes and no apparent ATP synthase complex genes, suggesting that the nanoarchaeotes rely on their host for the production of major cellular precursors.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1991694
Country of Publication:
United States
Language:
English

References (15)

Yellowstone Lake Nanoarchaeota journal January 2013
Nanobdella aerobiophila gen. nov., sp. nov., a thermoacidophilic, obligate ectosymbiotic archaeon, and proposal of Nanobdellaceae fam. nov., Nanobdellales ord. nov. and Nanobdellia class. nov. journal August 2022
Genomics-informed isolation and characterization of a symbiotic Nanoarchaeota system from a terrestrial geothermal environment journal July 2016
Introducing clinical nanoarchaeaology: Isolation by co-culture of Nanopusillus massiliensis sp. nov. journal January 2022
The genome of Nanoarchaeum equitans: Insights into early archaeal evolution and derived parasitism journal October 2003
CheckM: assessing the quality of microbial genomes recovered from isolates, single cells, and metagenomes journal May 2015
GTDB-Tk: a toolkit to classify genomes with the Genome Taxonomy Database journal November 2019
A new phylum of Archaea represented by a nanosized hyperthermophilic symbiont journal May 2002
A Complex Endomembrane System in the Archaeon Ignicoccus hospitalis Tapped by Nanoarchaeum equitans journal June 2017
Nanoarchaeum equitans and Ignicoccus hospitalis: New Insights into a Unique, Intimate Association of Two Archaea journal December 2007
Multiple Comparisons of Log-Likelihoods with Applications to Phylogenetic Inference journal August 1999
A complete domain-to-species taxonomy for Bacteria and Archaea journal April 2020
Nanoarchaeum equitans creates functional tRNAs from separate genes for their 5′- and 3′-halves journal February 2005
A new symbiotic nanoarchaeote (Candidatus Nanoclepta minutus) and its host (Zestosphaera tikiterensis gen. nov., sp. nov.) from a New Zealand hot spring journal January 2019
Nanoarchaeota, Their Sulfolobales Host, and Nanoarchaeota Virus Distribution across Yellowstone National Park Hot Springs journal September 2015

Similar Records

A new symbiotic nanoarchaeote (Candidatus Nanoclepta minutus) and its host (Zestosphaera tikiterensis gen. nov., sp. nov.) from a New Zealand hot spring
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Genomics-informed isolation and characterization of a symbiotic Nanoarchaeota system from a terrestrial geothermal environment
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Related Subjects

Nanopusillus
acidophile
hot spring
hyperthermophile
symbiote