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Wu YT, Chiang PW, Tandon K, Rogozin DY, Degermendzhy AG, Tang SL. Single-cell genomics-based analysis reveals a vital ecological role of Thiocapsa sp. LSW in the meromictic Lake Shunet, Siberia. Microb Genom 2021; 7:000712. [PMID: 34860152 PMCID: PMC8767323 DOI: 10.1099/mgen.0.000712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 10/11/2021] [Indexed: 01/18/2023] Open
Abstract
Meromictic lakes usually harbour certain prevailing anoxygenic phototrophic bacteria in their anoxic zone, such as the purple sulfur bacterium (PSB) Thiocapsa sp. LSW (hereafter LSW) in Lake Shunet, Siberia. PSBs have been suggested to play a vital role in carbon, nitrogen and sulfur cycling at the oxic-anoxic interface of stratified lakes; however, the ecological significance of PSBs in the lake remains poorly understood. In this study, we explored the potential ecological role of LSW using a deep-sequencing analysis of single-cell genomics associated with flow cytometry. An approximately 2.7 Mb draft genome was obtained based on the co-assembly of five single-cell genomes. LSW might grow photolithoautotrophically and could play putative roles not only as a carbon fixer and diazotroph, but also as a sulfate reducer/oxidizer in the lake. This study provides insights into the potential ecological role of Thiocapsa sp. in meromictic lakes.
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Affiliation(s)
- Yu-Ting Wu
- Department of Forestry, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, ROC
| | - Pei-Wen Chiang
- Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
| | - Kshitij Tandon
- Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
| | - Denis Yu Rogozin
- Institute of Biophysics, Siberian Division of the Russian Academy of Sciences, Krasnoyarsk, Russia
- Siberian Federal University, Krasnoyarsk, Russia
| | - Andrey G. Degermendzhy
- Institute of Biophysics, Siberian Division of the Russian Academy of Sciences, Krasnoyarsk, Russia
| | - Sen-Lin Tang
- Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
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Rogozin DY, Zykov VV, Ivanova EA, Anufrieva TN, Barkhatov YV, Khromechek EB, Botvich IY. Meromixis and Seasonal Dynamics of Vertical Structure of Lake Uchum (South Siberia). CONTEMP PROBL ECOL+ 2018. [DOI: 10.1134/s1995425518020117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Baatar B, Chiang PW, Rogozin DY, Wu YT, Tseng CH, Yang CY, Chiu HH, Oyuntsetseg B, Degermendzhy AG, Tang SL. Bacterial Communities of Three Saline Meromictic Lakes in Central Asia. PLoS One 2016; 11:e0150847. [PMID: 26934492 PMCID: PMC4775032 DOI: 10.1371/journal.pone.0150847] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 02/19/2016] [Indexed: 12/20/2022] Open
Abstract
Meromictic lakes located in landlocked steppes of central Asia (~2500 km inland) have unique geophysiochemical characteristics compared to other meromictic lakes. To characterize their bacteria and elucidate relationships between those bacteria and surrounding environments, water samples were collected from three saline meromictic lakes (Lakes Shira, Shunet and Oigon) in the border between Siberia and the West Mongolia, near the center of Asia. Based on in-depth tag pyrosequencing, bacterial communities were highly variable and dissimilar among lakes and between oxic and anoxic layers within individual lakes. Proteobacteria, Bacteroidetes, Cyanobacteria, Actinobacteria and Firmicutes were the most abundant phyla, whereas three genera of purple sulfur bacteria (a novel genus, Thiocapsa and Halochromatium) were predominant bacterial components in the anoxic layer of Lake Shira (~20.6% of relative abundance), Lake Shunet (~27.1%) and Lake Oigon (~9.25%), respectively. However, few known green sulfur bacteria were detected. Notably, 3.94% of all sequencing reads were classified into 19 candidate divisions, which was especially high (23.12%) in the anoxic layer of Lake Shunet. Furthermore, several hydro-parameters (temperature, pH, dissolved oxygen, H2S and salinity) were associated (P< 0.05) with variations in dominant bacterial groups. In conclusion, based on highly variable bacterial composition in water layers or lakes, we inferred that the meromictic ecosystem was characterized by high diversity and heterogenous niches.
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Affiliation(s)
- Bayanmunkh Baatar
- Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, Academia Sinica, Taipei, Taiwan
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, Taiwan
| | - Pei-Wen Chiang
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | | | - Yu-Ting Wu
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
- National Pingtung University of Science and Technology, Pingtung, Taiwan
| | | | - Cheng-Yu Yang
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Hsiu-Hui Chiu
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Bolormaa Oyuntsetseg
- School of Art and Sciences, National University of Mongolia, Ulaanbaatar 14201, Mongolia
| | | | - Sen-Lin Tang
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
- Biotechnology Center, National Chung-Hsing University, Taichung, Taiwan
- * E-mail:
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Rogozin DY, Zykov VV, Tarnovskii MO. Dynamics of purple sulfur bacteria in a meromictic saline Lake Shunet (Khakassia, Siberia) in 2007–2013. Microbiology (Reading) 2016. [DOI: 10.1134/s0026261716010100] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Zeta potential of anoxygenic phototrophic bacteria and Ca adsorption at the cell surface: Possible implications for cell protection from CaCO3 precipitation in alkaline solutions. J Colloid Interface Sci 2011; 360:100-9. [DOI: 10.1016/j.jcis.2011.04.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 03/30/2011] [Accepted: 04/09/2011] [Indexed: 11/21/2022]
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