Thermoproteus thermophilus sp. nov., a hyperthermophilic crenarchaeon isolated from solfataric soil

Yim, Kyung June; Song, Hye Seon; Choi, Jong-Soon; Roh, Seong Woon

doi:10.1099/ijs.0.000293

Cited by 9 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previously it was assumed that representatives of family Thermoproteaceae assigned to the phylum Crenarchaeota may also be capable of growth by means of sulfate respiration [16,22,[95][96][97]. Recently this process was proved for "Candidatus Vulcanisaeta moutnovskia", but not for other hyperthermophilic Crenarchaeota [5].…”

Section: Discussionmentioning

confidence: 99%

Diversity and Activity of Sulfate-Reducing Prokaryotes in Kamchatka Hot Springs

et al. 2021

View full text Add to dashboard Cite

Microbial communities of the Kamchatka Peninsula terrestrial hot springs were studied using radioisotopic and cultural approaches, as well as by the amplification and sequencing of dsrB and 16S rRNA genes fragments. Radioisotopic experiments with 35S-labeled sulfate showed that microbial communities of the Kamchatka hot springs are actively reducing sulfate. Both the cultivation experiments and the results of dsrB and 16S rRNA genes fragments analyses indicated the presence of microorganisms participating in the reductive part of the sulfur cycle. It was found that sulfate-reducing prokaryotes (SRP) belonging to Desulfobacterota, Nitrospirota and Firmicutes phyla inhabited neutral and slightly acidic hot springs, while bacteria of phylum Thermodesulofobiota preferred moderately acidic hot springs. In high-temperature acidic springs sulfate reduction was mediated by archaea of the phylum Crenarchaeota, chemoorganoheterotrophic representatives of genus Vulcanisaeta being the most probable candidates. The 16S rRNA taxonomic profiling showed that in most of the studied communities SRP was present only as a minor component. Only in one microbial community, the representatives of genus Vulcanisaeta comprised a significant group. Thus, in spite of comparatively low sulfate concentrations in terrestrial hot springs of the Kamchatka, phylogenetically and metabolically diverse groups of sulfate-reducing prokaryotes are operating there coupling carbon and sulfur cycles in these habitats.

show abstract

Section: Discussionmentioning

confidence: 99%

Diversity and Activity of Sulfate-Reducing Prokaryotes in Kamchatka Hot Springs

et al. 2021

View full text Add to dashboard Cite

show abstract

“…A common genus of this order, Thermoproteus, is found in sulfur sediments of YNP hot springs (19,20). These anaerobic sulfur-reducing organisms have a global distribution in acidic and near-neutral thermal features (12,13,19,21,22). They are capable of growing chemolithotrophically using H 2 and CO 2 or organoheterotrophically using a wide variety of sugars, organic acids, and alcohols (23,24).…”

mentioning

confidence: 99%

Discovery and Characterization of Thermoproteus Spherical Piliferous Virus 1: a Spherical Archaeal Virus Decorated with Unusual Filaments

Hartman

Biewenga

Munson-McGee

et al. 2020

J Virol

View full text Add to dashboard Cite

We describe the discovery of an archaeal virus, one that infects archaea, tentatively named Thermoproteus spherical piliferous virus 1 (TSPV1), which was purified from a Thermoproteales host isolated from a hot spring in Yellowstone National Park (USA). TSPV1 packages an 18.65-kb linear double-stranded DNA (dsDNA) genome with 31 open reading frames (ORFs), whose predicted gene products show little homology to proteins with known functions. A comparison of virus particle morphologies and gene content demonstrates that TSPV1 is a new member of the Globuloviridae family of archaeal viruses. However, unlike other Globuloviridae members, TSPV1 has numerous highly unusual filaments decorating its surface, which can extend hundreds of micrometers from the virion. To our knowledge, similar filaments have not been observed in any other archaeal virus. The filaments are remarkably stable, remaining intact across a broad range of temperature and pH values, and they are resistant to chemical denaturation and proteolysis. A major component of the filaments is a glycosylated 35-kDa TSPV1 protein (TSPV1 GP24). The filament protein lacks detectable homology to structurally or functionally characterized proteins. We propose, given the low host cell densities of hot spring environments, that the TSPV1 filaments serve to increase the probability of virus attachment and entry into host cells. IMPORTANCE High-temperature environments have proven to be an important source for the discovery of new archaeal viruses with unusual particle morphologies and gene content. Our isolation of Thermoproteus spherical piliferous virus 1 (TSPV1), with numerous filaments extending from the virion surface, expands our understanding of viral diversity and provides new insight into viral replication in high-temperature environments.

show abstract

Bibliometrics of Archaea and Where to Find Them

2024

Origin of Life via Archaea

View full text Add to dashboard Cite

Thermoproteus thermophilus sp. nov., a hyperthermophilic crenarchaeon isolated from solfataric soil

Abstract: A hyperthermophilic crenarchaeon, designated strain CBA1502

Cited by 9 publications

References 13 publications

Diversity and Activity of Sulfate-Reducing Prokaryotes in Kamchatka Hot Springs

Diversity and Activity of Sulfate-Reducing Prokaryotes in Kamchatka Hot Springs

Discovery and Characterization of Thermoproteus Spherical Piliferous Virus 1: a Spherical Archaeal Virus Decorated with Unusual Filaments

Bibliometrics of Archaea and Where to Find Them

Contact Info

Product

Resources

About