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Ravin NV, Smolyakov DD, Markov ND, Beletsky AV, Mardanov AV, Rudenko TS, Grabovich MY. tilS and rpoB: New Molecular Markers for Phylogenetic and Biodiversity Studies of the Genus Thiothrix. Microorganisms 2023; 11:2521. [PMID: 37894178 PMCID: PMC10609254 DOI: 10.3390/microorganisms11102521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/01/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023] Open
Abstract
Currently, the phylogeny of the genus Thiothrix is based on comparative whole genome analysis because of the high homology of the 16S ribosomal RNA gene sequences within the genus. We analyzed the possibility of using various conservative genes as phylogenetic markers for the genus Thiothrix. We found that the levels of similarity of the nucleotide sequences of the tRNA(Ile)-lysidine synthase (tilS) and the β subunit of RNA polymerase (rpoB) genes are in good agreement with the average nucleotide identity (ANI) values between the genomes of various representatives of the genus Thiothrix. The genomes of Thiothrix strains MK1, WS, DNT52, DNT53, and H33 were sequenced. Taxonomic analysis using both whole genomes and the tilS gene consistently showed that MK1 and WS belong to Thiothrix lacustris, while DNT52, DNT53, and H33 belong to Thiothrix subterranea. The tilS gene fragments were subjected to high-throughput sequencing to profile the Thiothrix mat of a sulfidic spring, which revealed the presence of known species of Thiothrix and new species-level phylotypes. Thus, the use of tilS and rpoB as phylogenetic markers will allow for rapid analyses of pure cultures and natural communities for the purpose of phylogenetic identification of representatives of the genus Thiothrix.
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Affiliation(s)
- Nikolai V. Ravin
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia; (N.V.R.); (A.V.B.); (A.V.M.)
| | - Dmitry D. Smolyakov
- Department of Biochemistry and Cell Physiology, Voronezh State University, Universitetskaya pl., 1, 394018 Voronezh, Russia; (D.D.S.); (N.D.M.); (T.S.R.)
| | - Nikita D. Markov
- Department of Biochemistry and Cell Physiology, Voronezh State University, Universitetskaya pl., 1, 394018 Voronezh, Russia; (D.D.S.); (N.D.M.); (T.S.R.)
| | - Alexey V. Beletsky
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia; (N.V.R.); (A.V.B.); (A.V.M.)
| | - Andrey V. Mardanov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia; (N.V.R.); (A.V.B.); (A.V.M.)
| | - Tatyana S. Rudenko
- Department of Biochemistry and Cell Physiology, Voronezh State University, Universitetskaya pl., 1, 394018 Voronezh, Russia; (D.D.S.); (N.D.M.); (T.S.R.)
| | - Margarita Yu. Grabovich
- Department of Biochemistry and Cell Physiology, Voronezh State University, Universitetskaya pl., 1, 394018 Voronezh, Russia; (D.D.S.); (N.D.M.); (T.S.R.)
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Ravin NV, Rudenko TS, Smolyakov DD, Beletsky AV, Rakitin AL, Markov ND, Fomenkov A, Sun L, Roberts RJ, Novikov AA, Karnachuk OV, Grabovich MY. Comparative Genome Analysis of the Genus Thiothrix Involving Three Novel Species, Thiothrix subterranea sp. nov. Ku-5, Thiothrix litoralis sp. nov. AS and " Candidatus Thiothrix anitrata" sp. nov. A52, Revealed the Conservation of the Pathways of Dissimilatory Sulfur Metabolism and Variations in the Genetic Inventory for Nitrogen Metabolism and Autotrophic Carbon Fixation. Front Microbiol 2021; 12:760289. [PMID: 34745068 PMCID: PMC8570282 DOI: 10.3389/fmicb.2021.760289] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 09/28/2021] [Indexed: 11/24/2022] Open
Abstract
Two strains of filamentous, colorless sulfur bacteria were isolated from bacterial fouling in the outflow of hydrogen sulfide-containing waters from a coal mine (Thiothrix sp. Ku-5) and on the seashore of the White Sea (Thiothrix sp. AS). Metagenome-assembled genome (MAG) A52 was obtained from a sulfidic spring in the Volgograd region, Russia. Phylogenetic analysis based on the 16S rRNA gene sequences showed that all genomes represented the genus Thiothrix. Based on their average nucleotide identity and digital DNA-DNA hybridization data these new isolates and the MAG represent three species within the genus Thiothrix with the proposed names Thiothrix subterranea sp. nov. Ku-5T, Thiothrix litoralis sp. nov. AST, and “Candidatus Thiothrix anitrata” sp. nov. A52. The complete genome sequences of Thiothrix fructosivorans QT and Thiothrix unzii A1T were determined. Complete genomes of seven Thiothrix isolates, as well as two MAGs, were used for pangenome analysis. The Thiothrix core genome consisted of 1,355 genes, including ones for the glycolysis, the tricarboxylic acid cycle, the aerobic respiratory chain, and the Calvin cycle of carbon fixation. Genes for dissimilatory oxidation of reduced sulfur compounds, namely the branched SOX system (SoxAXBYZ), direct (soeABC) and indirect (aprAB, sat) pathways of sulfite oxidation, sulfur oxidation complex Dsr (dsrABEFHCEMKLJONR), sulfide oxidation systems SQR (sqrA, sqrF), and FCSD (fccAB) were found in the core genome. Genomes differ in the set of genes for dissimilatory reduction of nitrogen compounds, nitrogen fixation, and the presence of various types of RuBisCO.
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Affiliation(s)
- Nikolai V Ravin
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Tatyana S Rudenko
- Department of Biochemistry and Cell Physiology, Voronezh State University, Voronezh, Russia
| | - Dmitry D Smolyakov
- Department of Biochemistry and Cell Physiology, Voronezh State University, Voronezh, Russia
| | - Alexey V Beletsky
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Andrey L Rakitin
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Nikita D Markov
- Department of Biochemistry and Cell Physiology, Voronezh State University, Voronezh, Russia
| | | | - Luo Sun
- New England Biolabs, Ipswich, MA, United States
| | | | - Andrey A Novikov
- Department of Physical and Colloid Chemistry, Gubkin Russian State University of Oil and Gas, Moscow, Russia
| | - Olga V Karnachuk
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, Tomsk, Russia
| | - Margarita Y Grabovich
- Department of Biochemistry and Cell Physiology, Voronezh State University, Voronezh, Russia
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Grabovich MY, Smolyakov DD, Beletsky AV, Mardanov AV, Gureeva MV, Markov ND, Rudenko TS, Ravin NV. Reclassification of Sphaerotilus natans subsp. sulfidivorans Gridneva et al. 2011 as Sphaerotilus sulfidivorans sp. nov. and comparative genome analysis of the genus Sphaerotilus. Arch Microbiol 2021; 203:1595-1599. [PMID: 33399897 DOI: 10.1007/s00203-020-02158-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/01/2020] [Accepted: 12/14/2020] [Indexed: 11/29/2022]
Abstract
Filamentous iron oxides accumulating bacteria Sphaerotilus natans subsp. natans and S. natans subsp. sulfidivorans were described as subspecies based on 99.7% identity of their 16S rRNA sequences, in spite of important physiological difference. The ANI between their genomes was 94.7%, which indicate their assignment to different species. S. natans subsp. sulfidivorans and S. montanus possess genes for a complete SOX system, while S. natans subsp. natans encode only SoxYZ. There are genes for the Calvin cycle in the genomes of S. hippei DSM 566T, S. natans subsp. sulfidivorans D-501T, and S. montanus HST. Lithoautotrophy on reduced sulfur compounds is probably possible for S. natans subsp. sulfidivorans and S. montanus, but not for S. natans subsp. natans. Considering significant differences in the genome characteristics and metabolic potential of S. natans subsp. sulfidivorans and S. natans subsp. natans, we propose their classification as different species, S. natans and S. sulfidivorans sp. nov.
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Affiliation(s)
- Margarita Y Grabovich
- Department of Biochemistry and Cell Physiology, Voronezh State University, 1 Universitetskaya pl, Voronezh, 394018, Russia.
| | - Dmitry D Smolyakov
- Department of Biochemistry and Cell Physiology, Voronezh State University, 1 Universitetskaya pl, Voronezh, 394018, Russia
| | - Alexey V Beletsky
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 119071, Moscow, Russia
| | - Andrey V Mardanov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 119071, Moscow, Russia
| | - Maria V Gureeva
- Department of Biochemistry and Cell Physiology, Voronezh State University, 1 Universitetskaya pl, Voronezh, 394018, Russia
| | - Nikita D Markov
- Department of Biochemistry and Cell Physiology, Voronezh State University, 1 Universitetskaya pl, Voronezh, 394018, Russia
| | - Tatyana S Rudenko
- Department of Biochemistry and Cell Physiology, Voronezh State University, 1 Universitetskaya pl, Voronezh, 394018, Russia
| | - Nikolai V Ravin
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 119071, Moscow, Russia
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