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Title

Two New Species of Filamentous Sulfur Bacteria of the Genus Thiothrix, Thiothrix winogradskyi sp. nov. and ‘Candidatus Thiothrix sulfatifontis’ sp. nov.

Authors

Nikolai V Ravin; Simona Rossetti; Alexey V Beletsky; Vitaly V Kadnikov; Tatyana S Rudenko; Dmitry D Smolyakov; Marina I Moskvitina; Maria V Gureeva; Andrey V Mardanov; Margarita Yu Grabovich; Ravin; Nikolai V; Rossetti; Simona; Beletsky; Alexey V; Kadnikov; Vitaly V; Rudenko; Tatyana S; Smolyakov; Dmitry D; Moskvitina; Marina I; Gureeva; Maria V; Mardanov; Andrey V; Grabovich; Margarita Yu

Availability

Better title

Two New Species of Filamentous Sulfur Bacteria of the Genus Thiothrix, Thiothrix winogradskyi sp. nov. and ‘Candidatus Thiothrix sulfatifontis’ sp. nov.

Source

MDPI (mdpi.com)

URL

https://www.mdpi.com/2076-2607/10/7/1300

Date

2022-06-27

Description

Abstract

The metagenome of foulings from sulfidic spring “Serovodorodny” (Tatarstan, Russia), where members of the genus Thiothrix was observed, was sequenced. Representatives of the phyla Gammaproteobacteria, Cyanobacteria and Campilobacteriota dominated in the microbial community. The complete genome of Thiothrix sp. KT was assembled from the metagenome. It displayed 93.93–99.72% 16S rRNA gene sequence identity to other Thiothrix species. The average nucleotide identity (ANI) и digital DNA-DNA hybridization (dDDH) showed that the genome designated KT represents a new species within the genus Thiothrix, ‘Candidatus Thiothrix sulfatifontis’ sp. nov. KT. The taxonomic status has been determined of the strain Thiothrix sp. CT3, isolated about 30 years ago and not assigned to any of Thiothrix species due to high 16S rRNA gene sequence identity with related species (i.e., 98.8–99.4%). The complete genome sequence of strain CT3 was determined. The ANI between CT3 and other Thiothrix species was below 82%, and the dDDH values were less than 40%, indicating that strain CT3 belongs to a novel species, Thiothrix winogradskyi sp. nov. A genome analysis showed that both strains are chemo-organoheterotrophs, chemolithotrophs (in the presence of hydrogen sulfide and thiosulfate) and chemoautotrophs. For the first time, representatives of Thiothrix showed anaerobic growth in the presence of thiosulfate.

Keywords

categories = <i>Thiothrix</i>,genome,MAG,ANI,dDDH

Body

Two New Species of Filamentous Sulfur Bacteria of the Genus Thiothrix, Thiothrix winogradskyi sp. nov. and ‘Candidatus Thiothrix sulfatifontis’ sp. nov.

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Microorganisms

2022,

10(7), 1300; https://doi.org/10.3390/microorganisms10071300

Figure 1

MDPI and ACS Style

Ravin, N.V.; Rossetti, S.; Beletsky, A.V.; Kadnikov, V.V.; Rudenko, T.S.; Smolyakov, D.D.; Moskvitina, M.I.; Gureeva, M.V.; Mardanov, A.V.; Grabovich, M.Y. Two New Species of Filamentous Sulfur Bacteria of the Genus Thiothrix, Thiothrix winogradskyi sp. nov. and ‘Candidatus Thiothrix sulfatifontis’ sp. nov. Microorganisms 2022, 10, 1300. https://doi.org/10.3390/microorganisms10071300

AMA Style

Ravin NV, Rossetti S, Beletsky AV, Kadnikov VV, Rudenko TS, Smolyakov DD, Moskvitina MI, Gureeva MV, Mardanov AV, Grabovich MY. Two New Species of Filamentous Sulfur Bacteria of the Genus Thiothrix, Thiothrix winogradskyi sp. nov. and ‘Candidatus Thiothrix sulfatifontis’ sp. nov. Microorganisms. 2022; 10(7):1300. https://doi.org/10.3390/microorganisms10071300

Chicago/Turabian Style

Ravin, Nikolai V., Simona Rossetti, Alexey V. Beletsky, Vitaly V. Kadnikov, Tatyana S. Rudenko, Dmitry D. Smolyakov, Marina I. Moskvitina, Maria V. Gureeva, Andrey V. Mardanov, and Margarita Y. Grabovich. 2022. "Two New Species of Filamentous Sulfur Bacteria of the Genus Thiothrix, Thiothrix winogradskyi sp. nov. and ‘Candidatus Thiothrix sulfatifontis’ sp. nov." Microorganisms 10, no. 7: 1300. https://doi.org/10.3390/microorganisms10071300

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