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Wang S, Lu Q, Liang Z, Yu X, Lin M, Mai B, Qiu R, Shu W, He Z, Wall JD. Generation of zero-valent sulfur from dissimilatory sulfate reduction in sulfate-reducing microorganisms. Proc Natl Acad Sci U S A 2023; 120:e2220725120. [PMID: 37155857 PMCID: PMC10194018 DOI: 10.1073/pnas.2220725120] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/14/2023] [Indexed: 05/10/2023] Open
Abstract
Dissimilatory sulfate reduction (DSR) mediated by sulfate-reducing microorganisms (SRMs) plays a pivotal role in global sulfur, carbon, oxygen, and iron cycles since at least 3.5 billion y ago. The canonical DSR pathway is believed to be sulfate reduction to sulfide. Herein, we report a DSR pathway in phylogenetically diverse SRMs through which zero-valent sulfur (ZVS) is directly generated. We identified that approximately 9% of sulfate reduction was directed toward ZVS with S8 as a predominant product, and the ratio of sulfate-to-ZVS could be changed with SRMs' growth conditions, particularly the medium salinity. Further coculturing experiments and metadata analyses revealed that DSR-derived ZVS supported the growth of various ZVS-metabolizing microorganisms, highlighting this pathway as an essential component of the sulfur biogeochemical cycle.
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Affiliation(s)
- Shanquan Wang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-Sen University, Guangzhou510006, China
| | - Qihong Lu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-Sen University, Guangzhou510006, China
| | - Zhiwei Liang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-Sen University, Guangzhou510006, China
| | - Xiaoxiao Yu
- State Key Laboratory of Isotope Geochemistry and CAS Center for Excellence in Deep Earth Science, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou510640, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou511458, China
- University of Chinese Academy of Sciences, Beijing100039, China
| | - Mang Lin
- State Key Laboratory of Isotope Geochemistry and CAS Center for Excellence in Deep Earth Science, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou510640, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou511458, China
- University of Chinese Academy of Sciences, Beijing100039, China
| | - Bixian Mai
- State Key Laboratory of Isotope Geochemistry and CAS Center for Excellence in Deep Earth Science, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou510640, China
- University of Chinese Academy of Sciences, Beijing100039, China
| | - Rongliang Qiu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou510642, China
| | - Wensheng Shu
- Institute of Ecological Science, School of Life Sciences, South China Normal University, Guangzhou510631, China
| | - Zhili He
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-Sen University, Guangzhou510006, China
| | - Judy D. Wall
- Department of Biochemistry, University of Missouri-Columbia, Columbia, MO65211
- Department of Molecular Microbiology & Immunology, University of Missouri-Columbia, Columbia, MO65211
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2
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He W, Cai R, Xi S, Yin Z, Du Z, Luan Z, Sun C, Zhang X. Study of Microbial Sulfur Metabolism in a Near Real-Time Pathway through Confocal Raman Quantitative 3D Imaging. Microbiol Spectr 2023; 11:e0367822. [PMID: 36809047 PMCID: PMC10101092 DOI: 10.1128/spectrum.03678-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 01/30/2023] [Indexed: 02/23/2023] Open
Abstract
As microbial sulfur metabolism significantly contributes to the formation and cycling of deep-sea sulfur, studying their sulfur metabolism is important for understanding the deep-sea sulfur cycle. However, conventional methods are limited in near real-time studies of bacterial metabolism. Recently, Raman spectroscopy has been widely used in studies on biological metabolism due to its low-cost, rapid, label-free, and nondestructive features, providing us with new approaches to solve the above limitation. Here, we used the confocal Raman quantitative 3D imaging method to nondestructively detect the growth and metabolism of Erythrobacter flavus 21-3 in the long term and near real time, which possessed a pathway mediating the formation of elemental sulfur in the deep sea, but the dynamic process was unknown. In this study, its dynamic sulfur metabolism was visualized and quantitatively assessed in near real time using 3D imaging and related calculations. Based on 3D imaging, the growth and metabolism of microbial colonies growing under both hyperoxic and hypoxic conditions were quantified by volume calculation and ratio analysis. Additionally, unprecedented details of growth and metabolism were uncovered by this method. Due to this successful application, this method is potentially significant for analyzing the in situ biological processes of microorganisms in the future. IMPORTANCE Microorganisms contribute significantly to the formation of deep-sea elemental sulfur, so studies on their growth and dynamic sulfur metabolism are important to understand the deep-sea sulfur cycle. However, near real-time in situ nondestructive metabolic studies of microorganisms remain a great challenge due to the limitations of existing methods. We thus used an imaging-related workflow by confocal Raman microscopy. More detailed descriptions of the sulfur metabolism of E. flavus 21-3 were disclosed, which perfectly complemented previous research results. Therefore, this method is potentially significant for analyzing the in-situ biological processes of microorganisms in the future. To our knowledge, this is the first label-free and nondestructive in situ technique that can provide temporally persistent 3D visualization and quantitative information about bacteria.
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Affiliation(s)
- Wanying He
- CAS Key Laboratory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Geology, Pilot Laboratory for Marine Science and Technology, Qingdao, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
| | - Ruining Cai
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
| | - Shichuan Xi
- CAS Key Laboratory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Geology, Pilot Laboratory for Marine Science and Technology, Qingdao, China
| | - Ziyu Yin
- CAS Key Laboratory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Geology, Pilot Laboratory for Marine Science and Technology, Qingdao, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
| | - Zengfeng Du
- CAS Key Laboratory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Geology, Pilot Laboratory for Marine Science and Technology, Qingdao, China
| | - Zhendong Luan
- CAS Key Laboratory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Geology, Pilot Laboratory for Marine Science and Technology, Qingdao, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
| | - Chaomin Sun
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xin Zhang
- CAS Key Laboratory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Geology, Pilot Laboratory for Marine Science and Technology, Qingdao, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
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3
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Liu R, Shan Y, Xi S, Zhang X, Sun C. A deep-sea sulfate-reducing bacterium generates zero-valent sulfur via metabolizing thiosulfate. MLIFE 2022; 1:257-271. [PMID: 38818226 PMCID: PMC10989961 DOI: 10.1002/mlf2.12038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 06/01/2024]
Abstract
Zero-valent sulfur (ZVS) is a crucial intermediate in the sulfur geobiochemical circulation and is widespread in deep-sea cold seeps. Sulfur-oxidizing bacteria are thought to be the major contributors to the formation of ZVS. However, ZVS production mediated by sulfate-reducing bacteria (SRB) has rarely been reported. In this study, we isolated and cultured a typical SRB designated Oceanidesulfovibrio marinus CS1 from deep-sea cold seep sediment in the South China Sea. We show that O. marinus CS1 forms ZVS in the medium supplemented with thiosulfate. Proteomic and protein activity assays revealed that thiosulfate reductase (PhsA) and the sulfide:quinone oxidoreductase (SQR) played key roles in driving ZVS formation in O. marinus CS1. During this process, thiosulfate firstly was reduced by PhsA to form sulfide, then sulfide was oxidized by SQR to produce ZVS. The expressions of PhsA and SQR were significantly upregulated when O. marinus CS1 was cultured in a deep-sea cold seep, strongly indicating that strain CS1 might form ZVS in the deep-sea environment. Notably, homologs of phsA and sqr were widely identified from microbes living in sediments of deep-sea cold seep in the South China Sea by the metagenomic analysis. We thus propose that SRB containing phsA and sqr genes potentially contribute to the formation of ZVS in deep-sea cold seep environments.
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Affiliation(s)
- Rui Liu
- CAS and Shandong Province Key Laboratory of Experimental Marine BiologyCenter of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
- Center of Ocean Mega‐Science, Chinese Academy of SciencesQingdaoChina
| | - Yeqi Shan
- CAS and Shandong Province Key Laboratory of Experimental Marine BiologyCenter of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
- Center of Ocean Mega‐Science, Chinese Academy of SciencesQingdaoChina
- College of Earth Science, University of Chinese Academy of SciencesBeijingChina
| | - Shichuan Xi
- Center of Ocean Mega‐Science, Chinese Academy of SciencesQingdaoChina
- College of Earth Science, University of Chinese Academy of SciencesBeijingChina
- CAS Key Laboratory of Marine Geology and EnvironmentCenter of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
| | - Xin Zhang
- Center of Ocean Mega‐Science, Chinese Academy of SciencesQingdaoChina
- CAS Key Laboratory of Marine Geology and EnvironmentCenter of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
| | - Chaomin Sun
- CAS and Shandong Province Key Laboratory of Experimental Marine BiologyCenter of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
- Center of Ocean Mega‐Science, Chinese Academy of SciencesQingdaoChina
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4
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Barkatt A, Okutsu M. Obtaining elemental sulfur for Martian sulfur concrete. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221080729] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A potential candidate material for the construction of Mars habitats is concrete made from the Martian regolith and sulfur extracted from the regolith itself. Sulfur concrete, which has excellent mechanical properties, can be prepared at a low temperature (<150 °) and without water (unlike Portland-cement concrete). The surface of Mars has a much higher concentration of sulfur than those of the Earth, the Moon, or the asteroids. Sulfur on Mars, however, exists not as elemental sulfur—which is needed in concrete production—but as sulfates (usually hydrated) and sulfides. This paper surveys thermochemical and electrochemical methods that might be used to produce elemental sulfur from its compounds contained in the minerals on Mars. Possible methods include chemical or electrochemical oxidation or decomposition of sulfides, which include sulfides that exist naturally on Mars as well as sulfides that are produced via chemical or electrochemical reduction of sulfates. Some of the methods to obtain elemental sulfur—such as chemical or electrochemical oxidation or decomposition of metal sulfides or hydrogen sulfide—have already been demonstrated. The methods of producing elemental sulfur from sulfur-containing minerals on Mars will have the added benefit of generating byproducts (e.g. water, hydrogen, oxygen, and metals) that are useful for explorations of the Red Planet. In the future, chemical processes for the production of elemental sulfur may also have important industrial applications on Earth.
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Affiliation(s)
- Aaron Barkatt
- The Catholic University of America, Washington, DC, USA
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5
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Tripathi AK, Thakur P, Saxena P, Rauniyar S, Gopalakrishnan V, Singh RN, Gadhamshetty V, Gnimpieba EZ, Jasthi BK, Sani RK. Gene Sets and Mechanisms of Sulfate-Reducing Bacteria Biofilm Formation and Quorum Sensing With Impact on Corrosion. Front Microbiol 2021; 12:754140. [PMID: 34777309 PMCID: PMC8586430 DOI: 10.3389/fmicb.2021.754140] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/24/2021] [Indexed: 01/02/2023] Open
Abstract
Sulfate-reducing bacteria (SRB) have a unique ability to respire under anaerobic conditions using sulfate as a terminal electron acceptor, reducing it to hydrogen sulfide. SRB thrives in many natural environments (freshwater sediments and salty marshes), deep subsurface environments (oil wells and hydrothermal vents), and processing facilities in an industrial setting. Owing to their ability to alter the physicochemical properties of underlying metals, SRB can induce fouling, corrosion, and pipeline clogging challenges. Indigenous SRB causes oil souring and associated product loss and, subsequently, the abandonment of impacted oil wells. The sessile cells in biofilms are 1,000 times more resistant to biocides and induce 100-fold greater corrosion than their planktonic counterparts. To effectively combat the challenges posed by SRB, it is essential to understand their molecular mechanisms of biofilm formation and corrosion. Here, we examine the critical genes involved in biofilm formation and microbiologically influenced corrosion and categorize them into various functional categories. The current effort also discusses chemical and biological methods for controlling the SRB biofilms. Finally, we highlight the importance of surface engineering approaches for controlling biofilm formation on underlying metal surfaces.
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Affiliation(s)
- Abhilash Kumar Tripathi
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Payal Thakur
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Priya Saxena
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Shailabh Rauniyar
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Vinoj Gopalakrishnan
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Ram Nageena Singh
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Venkataramana Gadhamshetty
- 2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States.,BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Etienne Z Gnimpieba
- 2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Biomedical Engineering Program, University of South Dakota, Sioux Falls, SD, United States
| | - Bharat K Jasthi
- 2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Department of Materials and Metallurgical Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Rajesh Kumar Sani
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States.,BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Composite and Nanocomposite Advanced Manufacturing Centre-Biomaterials, Rapid City, SD, United States
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6
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Mansor M, Xu J. Benefits at the nanoscale: a review of nanoparticle-enabled processes favouring microbial growth and functionality. Environ Microbiol 2020; 22:3633-3649. [PMID: 32705763 DOI: 10.1111/1462-2920.15174] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 11/29/2022]
Abstract
Nanoparticles are ubiquitous and co-occur with microbial life in every environment on Earth. Interactions between microbes and nanoparticles impact the biogeochemical cycles via accelerating various reaction rates and enabling biological processes at the smallest scales. Distinct from microbe-mineral interactions at large, microbe-nanoparticle interactions may involve higher levels of active recognition and utilization of the reactive, changeable, and thereby 'moldable' nano-sized inorganic phases by microbes, which has been given minimal attention in previous reviews. Here we have compiled the various cases of microbe-nanoparticle interactions with clear and potential benefits to the microbial cells and communities. Specifically, we discussed (i) the high bioavailabilities of nanoparticles due to increased specific surface areas and size-dependent solubility, with a focus on environmentally-relevant iron(III) (oxyhydr)oxides and pyrite, (ii) microbial utilization of nanoparticles as 'nano-tools' for electron transfer, chemotaxis, and storage units, and (iii) speculated benefits of precipitating 'moldable' nanoparticles in extracellular biomineralization. We further discussed emergent questions concerning cellular level responses to nanoparticle-associated cues, and the factors that affect nanoparticles' bioavailabilities beyond size-dependent effects. We end the review by proposing a framework towards more quantitative approaches and by highlighting promising techniques to guide future research in this exciting field.
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Affiliation(s)
- Muammar Mansor
- Geomicrobiology, Center for Applied Geoscience, University of Tuebingen, Tuebingen, 72076, Germany
| | - Jie Xu
- Department of Geological Sciences, the University of Texas at El Paso, El Paso, Texas, 79968, USA
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7
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Zhang J, Liu R, Xi S, Cai R, Zhang X, Sun C. A novel bacterial thiosulfate oxidation pathway provides a new clue about the formation of zero-valent sulfur in deep sea. ISME JOURNAL 2020; 14:2261-2274. [PMID: 32457501 PMCID: PMC7608252 DOI: 10.1038/s41396-020-0684-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/06/2020] [Accepted: 05/12/2020] [Indexed: 11/09/2022]
Abstract
Zero-valent sulfur (ZVS) has been shown to be a major sulfur intermediate in the deep-sea cold seep of the South China Sea based on our previous work, however, the microbial contribution to the formation of ZVS in cold seep has remained unclear. Here, we describe a novel thiosulfate oxidation pathway discovered in the deep-sea cold seep bacterium Erythrobacter flavus 21–3, which provides a new clue about the formation of ZVS. Electronic microscopy, energy-dispersive, and Raman spectra were used to confirm that E. flavus 21–3 effectively converts thiosulfate to ZVS. We next used a combined proteomic and genetic method to identify thiosulfate dehydrogenase (TsdA) and thiosulfohydrolase (SoxB) playing key roles in the conversion of thiosulfate to ZVS. Stoichiometric results of different sulfur intermediates further clarify the function of TsdA in converting thiosulfate to tetrathionate (−O3S–S–S–SO3−), SoxB in liberating sulfone from tetrathionate to form ZVS and sulfur dioxygenases (SdoA/SdoB) in oxidizing ZVS to sulfite under some conditions. Notably, homologs of TsdA, SoxB, and SdoA/SdoB widely exist across the bacteria including in Erythrobacter species derived from different environments. This strongly indicates that this novel thiosulfate oxidation pathway might be frequently used by microbes and plays an important role in the biogeochemical sulfur cycle in nature.
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Affiliation(s)
- Jing Zhang
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,College of Earth Science, University of Chinese Academy of Sciences, Beijing, China.,Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Rui Liu
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Shichuan Xi
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China.,Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.,CAS Key Laboratory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Ruining Cai
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,College of Earth Science, University of Chinese Academy of Sciences, Beijing, China.,Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Xin Zhang
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.,CAS Key Laboratory of Marine Geology and Environment & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Chaomin Sun
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China. .,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China. .,Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.
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8
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Leavitt WD, Venceslau SS, Waldbauer J, Smith DA, Pereira IAC, Bradley AS. Proteomic and Isotopic Response of Desulfovibrio vulgaris to DsrC Perturbation. Front Microbiol 2019; 10:658. [PMID: 31031715 PMCID: PMC6470260 DOI: 10.3389/fmicb.2019.00658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 03/15/2019] [Indexed: 11/30/2022] Open
Abstract
Dissimilatory sulfate reduction is a microbial energy metabolism that can produce sulfur isotopic fractionations over a large range in magnitude. Calibrating sulfur isotopic fractionation in laboratory experiments allows for better interpretations of sulfur isotopes in modern sediments and ancient sedimentary rocks. The proteins involved in sulfate reduction are expressed in response to environmental conditions, and are collectively responsible for the net isotopic fractionation between sulfate and sulfide. We examined the role of DsrC, a key component of the sulfate reduction pathway, by comparing wildtype Desulfovibrio vulgaris DSM 644T to strain IPFG07, a mutant deficient in DsrC production. Both strains were cultivated in parallel chemostat reactors at identical turnover times and cell specific sulfate reduction rates. Under these conditions, sulfur isotopic fractionations between sulfate and sulfide of 17.3 ± 0.5‰ or 12.6 ± 0.5‰ were recorded for the wildtype or mutant, respectively. The enzymatic machinery that produced these different fractionations was revealed by quantitative proteomics. Results are consistent with a cellular-level response that throttled the supply of electrons and sulfur supply through the sulfate reduction pathway more in the mutant relative to the wildtype, independent of rate. We conclude that the smaller fractionation observed in the mutant strain is a consequence of sulfate reduction that proceeded at a rate that consumed a greater proportion of the strains overall capacity for sulfate reduction. These observations have consequences for models of sulfate reducer metabolism and how it yields different isotopic fractionations, notably, the role of DsrC in central energy metabolism.
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Affiliation(s)
- William D. Leavitt
- Department of Earth Sciences, Dartmouth College, Hanover, NH, United States
- Department of Earth and Planetary Sciences, Washington University in St. Louis, St. Louis, MO, United States
- Department of Biological Sciences, Dartmouth College, Hanover, NH, United States
- Department of Chemistry, Dartmouth College, Hanover, NH, United States
| | - Sofia S. Venceslau
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Jacob Waldbauer
- Department of the Geophysical Sciences, University of Chicago, Chicago, IL, United States
| | - Derek A. Smith
- Department of Earth and Planetary Sciences, Washington University in St. Louis, St. Louis, MO, United States
| | - Inês A. Cardoso Pereira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Alexander S. Bradley
- Department of Earth and Planetary Sciences, Washington University in St. Louis, St. Louis, MO, United States
- Division of Biology and Biomedical Sciences, Washington University in St. Louis, St. Louis, MO, United States
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