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Di Z, Wang Y, Zhang E, Zhang Y, Bao Y, Zhao K, Wang Z, He S, Xiang Y. The Mechanism Underlying Enhanced Coal-to-Methane Conversion in Anaerobic Digestion With Betaine Supplementation. Biotechnol J 2025; 20:e70028. [PMID: 40285382 DOI: 10.1002/biot.70028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2025] [Revised: 04/07/2025] [Accepted: 04/11/2025] [Indexed: 04/29/2025]
Abstract
Anaerobic digestion (AD) of coal-to-methane technology represents a promising energy conversion method that not only reduces environmental pollution but also contributes to sustainable development. However, low methane conversion efficiency remains a major challenge. This study investigates the use of betaine, a green and environmentally friendly alkaloid, to enhance the AD process of coal. Our results demonstrate that betaine supplementation increases the relative abundance of key microbial populations, including Petrimonas, Desulfitibacter, Methanoculleus, and Methanosarcina, while also improving cell membrane permeability. Three-dimensional fluorescence characterization reveals elevated secretion of bacterial metabolites, leading to increased protein concentrations and enhanced enzymatic activity in the liquid phase. Moreover, the content of alkane compounds in the liquid phase increases, further confirming the enhanced conversion of coal to biological methane. In conclusion, betaine supplementation significantly improves coal AD efficiency, providing a novel approach to optimize coal fermentation and biological energy conversion.
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Affiliation(s)
- Zhiting Di
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, China
| | - Yaya Wang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, China
| | - Enxi Zhang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, China
| | - Ye Zhang
- School of Pharmacy, Xi'an Medical University, Xi'an, China
| | - Yuan Bao
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, China
| | - Kaile Zhao
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, China
| | - Zhigang Wang
- College of Energy Engineering, Xi'an University of Science and Technology, Xi'an, China
| | - Shihua He
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, China
| | - Yanxin Xiang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, China
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2
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Lee KY, Lai MC, Lin S, Lai SJ, Zhang WL, Chen WC, You YT, Wu SY, Hung CC, Ding JY, Zhou YZ, Shih CJ, Wu YC, Zhao J, Li Y, Xiao W, Wu CH, Zhang H, Dong G, Qiu W, Wang S, Chen SC. Methanobacterium aridiramus sp. nov., a methanogen isolated from potential methane hydrate bearing area offshore southwestern Taiwan. Int J Syst Evol Microbiol 2025; 75. [PMID: 39932766 DOI: 10.1099/ijsem.0.006658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2025] Open
Abstract
A novel mesophilic, hydrogenotrophic methanogen, strain CWC-01T, was isolated from the sediment sample of the piston core collected at station 3 at Good Weather Ridge area offshore southwestern Taiwan from ORI-902A cruise in 2009. Cells of strain CWC-01T are rod-shaped, measuring 0.4-0.5 µm in width and 1.0-2.0 µm in length. Strain CWC-01T utilizes formate and H2/CO2 to produce methane, but not secondary alcohol, methanol, ethanol, methylamines or acetate as catabolic substrates. The optimal growth conditions are 37 °C, 0.043 M NaCl and pH 6.3. Growth effectors tests indicate tryptone, but not acetate and yeast extract, could stimulate the growth of strain CWC-01. Phylogenetic analysis of 16S rRNA gene reveals that strain CWC-01T is most closely related to Methanobacterium petrolearium Mic5c12T, with 96.63% identity. Genome size of strain CWC-01T is 1.98 Mb and it is the smallest genome size of genus. The genomic DNA G+C content obtained from the genome sequence of strain CWC-01T is 44.15 mol%. Based on these phenotypic, phylogenetic and genomic analyses, we propose that strain CWC-01T represents a novel species in genus Methanobacterium, for which the name Methanobacterium aridiramus sp. nov. is proposed. The type strain is CWC-01T (=BCRC AR10053T=NBRC 113991T).
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Affiliation(s)
- Kuan-Yi Lee
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Mei-Chin Lai
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Saulwood Lin
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan, ROC
| | - Shu-Jung Lai
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, ROC
- Research Center for Cancer Biology, China Medical University, Taichung, Taiwan, ROC
| | - Wei-Ling Zhang
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, ROC
| | - Wen-Chieh Chen
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Yi-Ting You
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Sue-Yao Wu
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Chuan-Chuan Hung
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Jiun-Yan Ding
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Yang-Zhi Zhou
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Chao-Jen Shih
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, ROC
| | - Yen-Chi Wu
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, ROC
| | - Jingjing Zhao
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, PR China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian, PR China
| | - Yin Li
- Medical Plant Exploitation and Utilization Engineering Research Center, Sanming University, Sanming, Fujian, PR China
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, PR China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, PR China
| | - Wangchuan Xiao
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
| | - Chih-Hung Wu
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, PR China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian, PR China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, PR China
| | - Hangying Zhang
- Medical Plant Exploitation and Utilization Engineering Research Center, Sanming University, Sanming, Fujian, PR China
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, PR China
| | - Guowen Dong
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, PR China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian, PR China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, PR China
| | - Wanling Qiu
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, PR China
| | - Song Wang
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian, PR China
| | - Sheng-Chung Chen
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, ROC
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, PR China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, PR China
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3
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Zhou YZ, Lai MC, You YT, Lai SJ, Wu SY, Hung CC, Ding JY, Shih CJ, Wu YC, Zhang WL, Chen SC. Methanochimaera problematica gen. nov., sp. nov., a novel methanoarchaeon isolated from cold seep sediment and reclassification of Methanomicrobium antiquum as Methanoeremita antiquus gen. nov., comb. nov. Int J Syst Evol Microbiol 2024; 74. [PMID: 39635772 DOI: 10.1099/ijsem.0.006593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2024] Open
Abstract
A hydrogenotrophic methanoarchaeon, designated strain FWC-SCC4T, was isolated from cold seep sediment of Four-Way Closure Ridge, offshore southwestern Taiwan. Strain FWC-SCC4Tutilizes H2/CO2 or formate, but not acetate, secondary alcohols, methylamines, methanol or ethanol for growth and methane production. Yeast extract is required for growth. The cell morphology is coccoid, with a diameter of 0.8-1.2 µm, and the cell envelope is composed of S-layer protein with Mr about 137.00 kDa. Cells possess multiple flagella and usually occur singly. Strain FWC-SCC4T grows at a temperature range of 20-40 °C (optimum 37 °C) and a pH range of 5.4-7.2 (optimum 7.0). The NaCl range for growth is 0-0.86 M (optimum 0.09 M). The result of phylogenetic analysis of 16S rRNA gene sequences indicates that the most closely related species are Methanoplanus limicola M3T and Methanoplanus endosymbiosus MC1T, with similarities of 95.95 and 95.63%, respectively. The G+C content of the genomic DNA is 40.3 mol%. The overall genome-relatedness indexes (OGRIs) and concatenated ribosomal protein (RBP) phylogenic analysis indicate that strain FWC-SCC4T is a novel lineage of Methanomicrobiaceae. In addition to strain FWC-SCC4T, the differences between Methanomicrobium antiquum MobHT and Methanomicrobium mobile BPT demonstrated by comparative analysis of genomic G+C content and phylogenetic analysis with non-type strain genomes are enough to support the establishment of a novel genus. In conclusion, strain FWC-SCC4T (BCRC AR10058T= NBRC 114595T) is proposed as the type strain of Methanochimaera problematica gen. nov., sp. nov., and Methanoeremita antiquus gen. nov., comb. nov. is proposed as the new name for Methanomicrobium antiquum MobHT (=DSM 21220T= NBRC 104160T).
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Affiliation(s)
- Yang-Zhi Zhou
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Mei-Chin Lai
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Yi-Ting You
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Shu-Jung Lai
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung City, Taiwan, ROC
- Research Center for Cancer Biology, China Medical University, Taichung City, Taiwan, ROC
| | - Sue-Yao Wu
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Chuan-Chuan Hung
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Jiun-Yan Ding
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Chao-Jen Shih
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, ROC
| | - Yen-Chi Wu
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, ROC
| | - Wei-Ling Zhang
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, ROC
| | - Sheng-Chung Chen
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, PR China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, PR China
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4
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Zhang WL, Lai MC, Lin S, Chen WC, Deng YC, Lai SJ, Wu SY, Hung CC, Ding JY, Chen SC. Methanooceanicella nereidis gen. nov., sp. nov., the first oceanic Methanocellaceae methanogen, isolated from potential methane hydrate bearing area offshore southwestern Taiwan. Int J Syst Evol Microbiol 2024; 74. [PMID: 38634834 DOI: 10.1099/ijsem.0.006322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024] Open
Abstract
A novel mesophilic, hydrogenotrophic methanogen, strain CWC-04T, was obtained from a sediment sample extracted from a gravity core retrieved at station 22 within the KP-9 area off the southwestern coast of Taiwan during the ORIII-1368 cruise in 2009. Cells of strain CWC-04T were rod-shaped, 1.4-2.9 µm long by 0.5-0.6 µm wide, and occurred singly. Strain CWC-04Tutilized formate, H2/CO2, 2-propanol/CO2 or 2-butanol/CO2 as catabolic substrates. The optimal growth conditions were 42 °C, 0.17 M NaCl and pH 5.35. The genomic DNA G+C content calculated from the genome sequence of strain CWC-04T was 46.19 mol%. Phylogenetic analysis of 16S rRNA gene revealed that strain CWC-04T is affiliated with the genus Methanocella. The 16S rRNA gene sequences similarities within strains Methanocella arvoryzae MRE50T, Methanocella paludicola SANAET and Methanocella conradii HZ254T were 93.7, 93.0 and 91.3 %, respectively. In addition, the optical density of CWC-04T culture dropped abruptly upon entering the late-log growth phase, with virus-like particles (150 nm in diameter) being observed on and around the cells. This observation suggests that strain CWC-04T harbours a lytic virus. Based on these phenotypic, phylogenetic and genomic results, we propose that strain CWC-04T represents a novel species of a novel genus in the family Methanocellaceae, for which the name Methanooceanicella nereidis gen. nov., sp. nov. is proposed. The type strain is CWC-04T (=BCRC AR10050T=NBRC 113165T).
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Affiliation(s)
- Wei-Ling Zhang
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, ROC
| | - Mei-Chin Lai
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Saulwood Lin
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan, ROC
| | - Wen-Chieh Chen
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Yu-Chen Deng
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Shu-Jung Lai
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung City, Taiwan, ROC
- Research Center for Cancer Biology, China Medical University, Taichung City, Taiwan, ROC
| | - Sue-Yao Wu
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Chuan-Chuan Hung
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Jiun-Yan Ding
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Sheng-Chung Chen
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, PR China
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5
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Guo W, Qiu W, Zhu J, Shih CJ, Wu YC, Lai SJ, Zhou J, Zhu Z, You YT, Li Y, Chen SC. The complete genome sequence of Kineothrix sp. MB12-C1, isolated from the feces of black soldier fly larvae. Microbiol Resour Announc 2024; 13:e0100523. [PMID: 38112478 DOI: 10.1128/mra.01005-23] [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: 10/19/2023] [Accepted: 11/18/2023] [Indexed: 12/21/2023] Open
Abstract
Here, we present the complete genome sequence of Kineothrix sp. MB12-C1 (= BCRC 81406), isolated from the feces of black soldier fly (Hermetia illucens) larvae. The genome of strain MB12-C1 was chosen for further species classification and comparative genomic analysis.
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Affiliation(s)
- Wenjie Guo
- College of Environment and Resources, Fujian Normal University , Fuzhou, Fujian, China
- College of Carbon Neutral and Modern Industry, Fujian Normal University , Fuzhou, Fujian, China
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University , Sanming, Fujian, China
| | - Wanling Qiu
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
| | - Junyu Zhu
- College of Environment and Safety Engineering, Fuzhou University , Fuzhou, Fujian, China
| | - Chao-Jen Shih
- Bioresource Collection and Research Center, Food Industry Research and Development Institute , Hsinchu, Taiwan, China
| | - Yen-Chi Wu
- Bioresource Collection and Research Center, Food Industry Research and Development Institute , Hsinchu, Taiwan, China
| | - Shu-Jung Lai
- Graduate Institute of Biomedical Sciences, China Medical University , Taichung City, Taiwan, China
- Research Center for Cancer Biology, China Medical University , Taichung City, Taiwan, China
| | - Jiahui Zhou
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
| | - Zetao Zhu
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
| | - Yi-Ting You
- Department of Life Sciences, National Chung Hsing University , Taichung City, Taiwan, China
| | - Yin Li
- College of Environment and Resources, Fujian Normal University , Fuzhou, Fujian, China
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University , Sanming, Fujian, China
| | - Sheng-Chung Chen
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University , Sanming, Fujian, China
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6
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Qiu W, Zhu J, Shih CJ, Wu YC, Lai SJ, You YT, Wu CH, Liao CH, Lin H, Li S, Yan Y, Luo X, Li Y, Chen SC. Complete genome sequence of Proteiniborus sp. MB09-C3, isolated from the feces of the black soldier fly larvae. Microbiol Resour Announc 2023; 12:e0060823. [PMID: 37847038 PMCID: PMC10652958 DOI: 10.1128/mra.00608-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/12/2023] [Indexed: 10/18/2023] Open
Abstract
Here, we report the complete genome sequence of Proteiniborus sp. MB09-C3 (= BCRC 81405), isolated from the feces of black soldier fly (Hermetia illucens) larvae. The genome of strain MB09-C3 was selected for further species delineation and comparative genomic analysis.
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Grants
- CA220255, 202311311022 Sanming University (SMU)
- 2020J01379 Fujian Provincial Department of Science and Technology ()
- 2020Y0090, 2022Y0075, 2022L3027, 2018J01516, 2023J011018 Fujian Provincial Department of Science and Technology ()
- JAT190706, B201919 Department of Education, Fujian Province ()
- 2020-G-60, 2021-G-3, 2021-G-4 Sanming University (SMU)
- 20YG08, 20YG09, 22YG13 | Distinguished Young Scientific Research Talents Plan in Universities of Fujian Province
- MOST110-2320-B-039-058 Ministry of Science and Technology, Taiwan (MOST)
- Min Jiao Ke [2018] No. 47, KC180079, Yuanke [2022] No. 22 | Distinguished Young Scientific Research Talents Plan in Universities of Fujian Province
- Fujian Provincial Department of Science and Technology (福建省科技厅)
- Department of Education, Fujian Province (福建省教育厅)
- 福建省教育厅 | Distinguished Young Scientific Research Talents Plan in Universities of Fujian Province
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Affiliation(s)
- Wanling Qiu
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
| | - Junyu Zhu
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, China
| | - Chao-Jen Shih
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, Republic of China
| | - Yen-Chi Wu
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, Republic of China
| | - Shu-Jung Lai
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung City, Taiwan, Republic of China
- Research Center for Cancer Biology, China Medical University, Taichung City, Taiwan, Republic of China
| | - Yi-Ting You
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan, Republic of China
| | - Chih-Hung Wu
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, China
| | - Ching-Hua Liao
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, China
| | - Haozhe Lin
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
| | - Shilong Li
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
| | - Yujia Yan
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
| | - Xuming Luo
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
| | - Yin Li
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, China
| | - Sheng-Chung Chen
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, China
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7
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Chien HH, Lai MC, Weng CY, Chen MF, Wu SY, Lin S, Chen SC. Methanovulcanius yangii gen. nov., sp. nov., a hydrogenotrophic methanogen, isolated from a submarine mud volcano in the offshore area of southwestern Taiwan. Int J Syst Evol Microbiol 2023; 73. [PMID: 37938098 DOI: 10.1099/ijsem.0.006164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023] Open
Abstract
A novel mesophilic, hydrogenotrophic methanogen, strain CYW5T, was isolated from a sediment sample of a piston core collected from submarine mud volcano MV5 located in the offshore area of southwestern Taiwan. Cells of strain CYW5T were irregular coccids, 0.5-1.0 µm in diameter and lysed easily by 0.01 % sodium dodecyl sulphate (SDS) treatment. Strain CYW5Tutilized formate or hydrogen plus carbon dioxide as catabolic substrates for methanogenesis. The optimal growth conditions were 37 °C, 0.043-0.085 M NaCl and pH 6.02-7.32. The genomic DNA G+C content calculated from the genome sequence of strain CYW5T was 56.2 mol%. The results of phylogenetic analysis of 16S rRNA gene sequences indicated that strain CYW5T represented a member of the family Methanomicrobiaceae in the order Methanomicrobiales, and was closely related to the members of the genus Methanogenium. The most closely related species was Methanogenium cariaci JR1T (94.9 % of 16S rRNA gene sequence identity). The average nucleotide identity and average amino acid identity values between strain CYW5T and members of the family Methanomicrobiaceae were 74.7-78.5 % and 49.1-64.9%, respectively. Although many of the morphological and physiological characteristics of strain CYW5T and the species of the genus Methanogenium were similar, they were distinguishable by the differences in genomic G+C content and temperature, NaCl and pH ranges for growth. Based on these phenotypic, phylogenetic and genomic results, we propose that strain CYW5T represents a novel species, of a novel genus, named Methanovulcanius yangii gen. nov., sp. nov. The type strain is CYW5T (=BCRC AR10048T=DSM 100756T=NBRC 111404T).
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Affiliation(s)
- Hsin-Hsin Chien
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Mei-Chin Lai
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Chieh-Yin Weng
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Mei-Fei Chen
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Sue-Yao Wu
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Saulwood Lin
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan, ROC
| | - Sheng-Chung Chen
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian 365004, PR China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian 365004, PR China
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8
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Im S, Kang S, Jang D, Kim G, Kim DH. Use of reverse osmosis concentrate for mitigating greenhouse gas emissions from pig slurry. Front Microbiol 2023; 14:1180018. [PMID: 37266025 PMCID: PMC10229891 DOI: 10.3389/fmicb.2023.1180018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 04/24/2023] [Indexed: 06/03/2023] Open
Abstract
Due to the high global warming potential (GWP) in a short time scale (GWP100 = 28 vs. GWP20 = 86), mitigating CH4 emissions could have an early impact on reducing current global warming effects. The manure storage tank emits a significant amount of CH4, which can diminish the environmental benefit resulting from the anaerobic digestion of manure that can generate renewable energy. In the present study, we added the reverse osmosis concentrate (ROC) rich in salt to the pig slurry (PS) storage tank to reduce CH4 emissions. Simultaneously, pure NaCl was tested at the same concentration to compare and verify the performance of ROC addition. During 40 days of storage, 1.83 kg CH4/ton PS was emitted, which was reduced by 7-75% by the addition of ROC at 1-9 g Na+/L. This decrease was found to be more intensive than that found upon adding pure sodium, which was caused by the presence of sulfate rich in ROC, resulting in synergistic inhibition. The results of the microbial community and activity test showed that sodium directly inhibited methanogenic activity rather than acidogenic activity. In the subsequent biogas production from the stored PS, more CH4 was obtained by ROC addition due to the preservation of organic matter during storage. Overall, 51.2 kg CO2 eq./ton PS was emitted during the storage, while 8 kg CO2 eq./ton PS was reduced by biogas production in the case of control, resulting in a total of 43.2 kg CO2 eq./ton PS. This amount of greenhouse gas emissions was reduced by ROC addition at 5 g Na+/L by 22 and 65 kg CO2 eq./ton PS, considering GWP100 and GWP20 of CH4, respectively, where most of the reduction was achieved during the storage process. To the best of our knowledge, this was the first report using salty waste to reduce GHG emissions in a proper place, e.g., a manure storage tank.
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Affiliation(s)
- Seongwon Im
- Department of Environmental Research, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Sungwon Kang
- Department of Environmental Research, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Duksoo Jang
- Department of Global Smart City, Sungkyunkwan University (SKKU), Suwon-si, Gyeonggi-do, Republic of Korea
| | - Gyeongchul Kim
- Department of Civil Engineering, Inha University, Incheon, Republic of Korea
| | - Dong-Hoon Kim
- Department of Civil Engineering, Inha University, Incheon, Republic of Korea
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9
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Zhu J, Dong G, Shih CJ, Wu YC, Lai SJ, You YT, Qiu W, Wu CH, Liao CH, Gong Y, Chen SC. Complete Genome Sequence of Tissierella sp. Strain Yu-01, Isolated from the Feces of the Black Soldier Fly. Microbiol Resour Announc 2023:e0027723. [PMID: 37154723 DOI: 10.1128/mra.00277-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
We report the complete genome sequence of Tissierella sp. strain Yu-01 (=BCRC 81391), isolated from the feces of black soldier fly (Hermetia illucens) larvae. This fly has increasingly been gaining attention because of its usefulness for recycling organic waste. The genome of strain Yu-01 was selected for further species delineation.
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Affiliation(s)
- Junyu Zhu
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, People's Republic of China
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, People's Republic of China
| | - Guowen Dong
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, People's Republic of China
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, People's Republic of China
| | - Chao-Jen Shih
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, Republic of China
| | - Yen-Chi Wu
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan, Republic of China
| | - Shu-Jung Lai
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung City, Taiwan, Republic of China
- Research Center for Cancer Biology, China Medical University, Taichung City, Taiwan, Republic of China
| | - Yi-Ting You
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan, Republic of China
| | - Wanling Qiu
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, People's Republic of China
| | - Chih-Hung Wu
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, People's Republic of China
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, People's Republic of China
| | - Ching-Hua Liao
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, People's Republic of China
| | - Yan Gong
- People's Government of Zhongcun Township, Sanyuan District, Sanming City, Fujian, People's Republic of China
| | - Sheng-Chung Chen
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian, People's Republic of China
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, People's Republic of China
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan, Republic of China
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10
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Prakash O, Dodsworth JA, Dong X, Ferry JG, L'Haridon S, Imachi H, Kamagata Y, Rhee SK, Sagar I, Shcherbakova V, Wagner D, Whitman WB. Proposed minimal standards for description of methanogenic archaea. Int J Syst Evol Microbiol 2023; 73. [PMID: 37097839 DOI: 10.1099/ijsem.0.005500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023] Open
Abstract
Methanogenic archaea are a diverse, polyphyletic group of strictly anaerobic prokaryotes capable of producing methane as their primary metabolic product. It has been over three decades since minimal standards for their taxonomic description have been proposed. In light of advancements in technology and amendments in systematic microbiology, revision of the older criteria for taxonomic description is essential. Most of the previously recommended minimum standards regarding phenotypic characterization of pure cultures are maintained. Electron microscopy and chemotaxonomic methods like whole-cell protein and lipid analysis are desirable but not required. Because of advancements in DNA sequencing technologies, obtaining a complete or draft whole genome sequence for type strains and its deposition in a public database are now mandatory. Genomic data should be used for rigorous comparison to close relatives using overall genome related indices such as average nucleotide identity and digital DNA-DNA hybridization. Phylogenetic analysis of the 16S rRNA gene is also required and can be supplemented by phylogenies of the mcrA gene and phylogenomic analysis using multiple conserved, single-copy marker genes. Additionally, it is now established that culture purity is not essential for studying prokaryotes, and description of Candidatus methanogenic taxa using single-cell or metagenomics along with other appropriate criteria is a viable alternative. The revisions to the minimal criteria proposed here by the members of the Subcommittee on the Taxonomy of Methanogenic Archaea of the International Committee on Systematics of Prokaryotes should allow for rigorous yet practical taxonomic description of these important and diverse microbes.
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Affiliation(s)
- Om Prakash
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, Ganeshkhind, Pune, 411007, Maharashtra, India
- Symbiosis Centre for Climate Change and Sustainability, Symbiosis International (Deemed University), Lavale, Pune-412115, Maharashtra, India
| | - Jeremy A Dodsworth
- Department of Biology, California State University, San Bernardino, CA 92407, USA
| | - Xiuzhu Dong
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - James G Ferry
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Stephane L'Haridon
- CNRS, IFREMER, Laboratoire de Microbiologie des Environnements Extrêmes, University of Brest, F-29280, Plouzané, France
| | - Hiroyuki Imachi
- Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Yoichi Kamagata
- Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8560, Japan
| | - Sung-Keun Rhee
- Department of Microbiology, Chungbuk National University, Chungdae-ro 1, Cheongju 28644, Republic of Korea
| | - Isita Sagar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, Ganeshkhind, Pune, 411007, Maharashtra, India
| | - Viktoria Shcherbakova
- Laboratory of Anaerobic Microorganisms, All-Russian Collection of Microorganisms (VKM), Skryabin Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center Pushchino Center for Biological Research of the Russian Academy of Sciences, Prospect Nauki 3, Pushchino, Moscow, 142290, Russian Federation
| | - Dirk Wagner
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, Telegrafenberg A71-359, 14473 Potsdam, Germany
- Institut of Geosciences, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - William B Whitman
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA
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11
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Complete Genome Sequence of Methanofollis aquaemaris BCRC 16166
T
, Isolated from a Marine Aquaculture Fishpond. Microbiol Resour Announc 2022; 11:e0074322. [PMID: 36094213 PMCID: PMC9583781 DOI: 10.1128/mra.00743-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The hydrogenotrophic methanogen Methanofollis aquaemaris BCRC 16166T (= N2F9704T = DSM 14661T) was isolated from a marine aquaculture fishpond near Wang-gong (Taiwan, Republic of China). The genome of strain BCRC 16166T was selected for sequencing in order to provide further information about the species delineation and its infected virus.
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12
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Draft Genomes of Methanocalculus taiwanensis P2F9704a
T
and Methanocalculus chunghsingensis K1F9705b
T
, Hydrogenotrophic Methanogens Belonging to the Family
Methanocalculaceae. Microbiol Resour Announc 2022; 11:e0079222. [PMID: 36066251 PMCID: PMC9584218 DOI: 10.1128/mra.00792-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The family Methanocalculaceae comprises hydrogen- and formate-utilizing methanogens. Here, we report two additional draft genome sequences of Methanocalculaceae, those of Methanocalculus taiwanensis P2F9704aT (equivalent to BCRC 16182T and DSM 14663T) and Methanocalculus chunghsingensis K1F9705bT (equivalent to DSM 14646T and OCM 772T), which were selected for further species delineation and comparative genomic analyses.
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13
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Chen SC, Wu CH, You YT, Wu SY, Liao CH, Wang X, Li H, Guo Y, You J, Qiu W. Complete Genome Sequence of Methanofollis formosanus DSM 15483 T, Isolated from an Aquaculture Fish Pond. Microbiol Resour Announc 2022; 11:e0006822. [PMID: 35481773 PMCID: PMC9119062 DOI: 10.1128/mra.00068-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/14/2022] [Indexed: 11/20/2022] Open
Abstract
The hydrogenotrophic strain Methanofollis formosanus DSM 15483T (= ML15T = OCM 798T) was isolated from an aquaculture fish pond near Wang-gong, Taiwan. The genome of strain DSM 15483T was selected for sequencing in order to provide further information about the species delineation and its unique habitat.
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Affiliation(s)
- Sheng-Chung Chen
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, People’s Republic of China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, People’s Republic of China
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, Republic of China
| | - Chih-Hung Wu
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, People’s Republic of China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian, People’s Republic of China
- College of Environment & Safety Engineering, Fuzhou University, Fuzhou, Fujian, People’s Republic of China
| | - Yi-Ting You
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, Republic of China
| | - Sue-Yao Wu
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, Republic of China
| | - Ching-Hua Liao
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, People’s Republic of China
| | - Xiang Wang
- College of Environment & Safety Engineering, Fuzhou University, Fuzhou, Fujian, People’s Republic of China
| | - Hongduo Li
- College of Environment & Safety Engineering, Fuzhou University, Fuzhou, Fujian, People’s Republic of China
| | - Yun Guo
- College of Environment & Safety Engineering, Fuzhou University, Fuzhou, Fujian, People’s Republic of China
| | - Jinhui You
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, People’s Republic of China
| | - Wanling Qiu
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian, People’s Republic of China
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14
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Wang Y, Mairinger W, Raj SJ, Yakubu H, Siesel C, Green J, Durry S, Joseph G, Rahman M, Amin N, Hassan MZ, Wicken J, Dourng D, Larbi E, Adomako LAB, Senayah AK, Doe B, Buamah R, Tetteh-Nortey JNN, Kang G, Karthikeyan A, Roy S, Brown J, Muneme B, Sene SO, Tuffuor B, Mugambe RK, Bateganya NL, Surridge T, Ndashe GM, Ndashe K, Ban R, Schrecongost A, Moe CL. Quantitative assessment of exposure to fecal contamination in urban environment across nine cities in low-income and lower-middle-income countries and a city in the United States. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 763:143007. [PMID: 34718001 DOI: 10.1016/j.scitotenv.2020.143007] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 10/08/2020] [Accepted: 10/08/2020] [Indexed: 05/23/2023]
Abstract
BACKGROUND During 2014 to 2019, the SaniPath Exposure Assessment Tool, a standardized set of methods to evaluate risk of exposure to fecal contamination in the urban environment through multiple exposure pathways, was deployed in 45 neighborhoods in ten cities, including Accra and Kumasi, Ghana; Vellore, India; Maputo, Mozambique; Siem Reap, Cambodia; Atlanta, United States; Dhaka, Bangladesh; Lusaka, Zambia; Kampala, Uganda; Dakar, Senegal. OBJECTIVE Assess and compare risk of exposure to fecal contamination via multiple pathways in ten cities. METHODS In total, 4053 environmental samples, 4586 household surveys, 128 community surveys, and 124 school surveys were collected. E. coli concentrations were measured in environmental samples as an indicator of fecal contamination magnitude. Bayesian methods were used to estimate the distributions of fecal contamination concentration and contact frequency. Exposure to fecal contamination was estimated by the Monte Carlo method. The contamination levels of ten environmental compartments, frequency of contact with those compartments for adults and children, and estimated exposure to fecal contamination through any of the surveyed environmental pathways were compared across cities and neighborhoods. RESULTS Distribution of fecal contamination in the environment and human contact behavior varied by city. Universally, food pathways were the most common dominant route of exposure to fecal contamination across cities in low-income and lower-middle-income countries. Risks of fecal exposure via water pathways, such as open drains, flood water, and municipal drinking water, were site-specific and often limited to smaller geographic areas (i.e., neighborhoods) instead of larger areas (i.e., cities). CONCLUSIONS Knowledge of the relative contribution to fecal exposure from multiple pathways, and the environmental contamination level and frequency of contact for those "dominant pathways" could provide guidance for Water, Sanitation, and Hygiene (WASH) programming and investments and enable local governments and municipalities to improve intervention strategies to reduce the risk of exposure to fecal contamination.
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Affiliation(s)
- Yuke Wang
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
| | - Wolfgang Mairinger
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Suraja J Raj
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Habib Yakubu
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Casey Siesel
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Jamie Green
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Sarah Durry
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - George Joseph
- Water Global Practice, The World Bank, Washington, DC, USA
| | - Mahbubur Rahman
- Environmental Interventions Unit, Infectious Disease Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Nuhu Amin
- Environmental Interventions Unit, Infectious Disease Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | | | | | | | - Eugene Larbi
- Training Research and Networking for Development (TREND), Accra, Ghana
| | | | | | - Benjamin Doe
- Training Research and Networking for Development (TREND), Accra, Ghana
| | - Richard Buamah
- Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | - Gagandeep Kang
- Wellcome Research Laboratory, Christian Medical College, Vellore, India
| | - Arun Karthikeyan
- Wellcome Research Laboratory, Christian Medical College, Vellore, India
| | - Sheela Roy
- Wellcome Research Laboratory, Christian Medical College, Vellore, India
| | - Joe Brown
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Bacelar Muneme
- Water Supply and Mapping, WE Consult, Maputo, Mozambique
| | - Seydina O Sene
- Initiative Prospective Agricole et Rurale (IPAR), Dakar, Senegal
| | - Benedict Tuffuor
- Training Research and Networking for Development (TREND), Accra, Ghana
| | - Richard K Mugambe
- Department of Disease Control and Environmental Health, Makerere University School of Public Health, Kampala, Uganda
| | - Najib Lukooya Bateganya
- Department of Environment and Public Health, Kampala Capital City Authority, Kampala, Uganda
| | - Trevor Surridge
- Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Lusaka, Zambia
| | | | - Kunda Ndashe
- Department of Environmental Health, Faculty of Health Science, Lusaka Apex Medical University, Lusaka, Zambia
| | - Radu Ban
- Bill & Melinda Gates Foundation, Seattle, WA, USA
| | | | - Christine L Moe
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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15
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Characterization of Blf4, an Archaeal Lytic Virus Targeting a Member of the Methanomicrobiales. Viruses 2021; 13:v13101934. [PMID: 34696364 PMCID: PMC8540584 DOI: 10.3390/v13101934] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/14/2021] [Accepted: 09/20/2021] [Indexed: 01/05/2023] Open
Abstract
Today, the number of known viruses infecting methanogenic archaea is limited. Here, we report on a novel lytic virus, designated Blf4, and its host strain Methanoculleus bourgensis E02.3, a methanogenic archaeon belonging to the Methanomicrobiales, both isolated from a commercial biogas plant in Germany. The virus consists of an icosahedral head 60 nm in diameter and a long non-contractile tail of 125 nm in length, which is consistent with the new isolate belonging to the Siphoviridae family. Electron microscopy revealed that Blf4 attaches to the vegetative cells of M. bourgensis E02.3 as well as to cellular appendages. Apart from M. bourgensis E02.3, none of the tested Methanoculleus strains were lysed by Blf4, indicating a narrow host range. The complete 37 kb dsDNA genome of Blf4 contains 63 open reading frames (ORFs), all organized in the same transcriptional direction. For most of the ORFs, potential functions were predicted. In addition, the genome of the host M. bourgensis E02.3 was sequenced and assembled, resulting in a 2.6 Mbp draft genome consisting of nine contigs. All genes required for a hydrogenotrophic lifestyle were predicted. A CRISPR/Cas system (type I-U) was identified with six spacers directed against Blf4, indicating that this defense system might not be very efficient in fending off invading Blf4 virus.
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16
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Zhou W, Liao Z, Wu Z, Suyama T, Zhang W. Analysis of the difference between aged and degenerated pit mud microbiome in fermentation cellars for Chinese Luzhou-flavor baijiu by metatranscriptomics. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:4621-4631. [PMID: 33474773 DOI: 10.1002/jsfa.11105] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/10/2021] [Accepted: 01/21/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUD Chinese Luzhou-flavor baijiu (LFB) was fermented in an underground cellar, and the bottom and side of the cellar were covered with pit muds (PMs), where the metabolic activity of the microorganisms had a significant effect on the LFB quality. PMs can be divided into aged pit mud (AP) and degenerated pit mud (DP), thus, the qualities of LFB generated from AP and DP were different. In this essay, metatranscriptomics method was applied to illustrate the differences of the two PMs, as well as to search out the pivotal microorganisms and genes influencing the quality of LFB. RESULTS Archaea, Clostridium and some thermophilic microorganisms might bring significant effect in AP, while the active eukaryota and Anaeromyxobacter would cause degeneration in PM. Also, the metabolism of carbohydrate and amino acid were more active in AP. What is more, carbohydrate, amino acid and their derivant can produce important organic acids via the activity of the microorganisms in PMs. There were eight critical enzymes noticed in the organic acids metabolic pathway, which were more actively expressed in AP, demonstrating active expression of the critical genes related to organic acid metabolism could have a positive effect on LFB quality. CONCLUSION This study identified specific differences in active microorganisms, active expressed genes and the expression levels of key genes in vital metabolic pathway between AP and DP. Which may be the actual reason for the differences in the quality of LFB made from different PMs. Mastering these results will provide assistance to improve the quality of LFB. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Wen Zhou
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
- Department of Liquor and Food Engineering, Sichuan Technology and Business College, Dujiangyan, China
| | - Zuomin Liao
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Zhengyun Wu
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Taikei Suyama
- Akashi National College of Technology, Akashi, Japan
| | - Wenxue Zhang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
- School of Liquor-Making Engineering, Sichuan University Jinjiang College, Meishan, China
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17
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Shen Y, Chen SC, Lai MC, Huang HH, Chiu HH, Tang SL, Rogozin DY, Degermendzhy AG. Methanolobus halotolerans sp. nov., isolated from the saline Lake Tus in Siberia. Int J Syst Evol Microbiol 2020; 70:5586-5593. [PMID: 32915124 DOI: 10.1099/ijsem.0.004453] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A halotolerant, psychrotolerant and methylotrophic methanogen, strain SY-01T, was isolated from the saline Lake Tus in Siberia. Cells of strain SY-01T were non-motile, cocci and 0.8-1.0 µm in diameter. The only methanogenic substrate utilized by strain SY-01T was methanol. The temperature range of growth for strain SY-01T was from 4 to 40 °C and the optimal temperature for growth was 30 °C. The pH range of growth was from pH 7.2 to 9.0, with optimal growth at pH 8.0. The NaCl range of growth was 0-1.55 M with optimal growth at 0.51 M NaCl. The G+C content of the genome of strain SY-01T was 43.6 mol % as determined by genome sequencing. Phylogenetic analysis revealed that strain SY-01T was most closely related to Methanolobus zinderi SD1T (97.3 % 16S rRNA gene sequence similarity), and had 95.5-97.2 % similarities to other Methanolobus species with valid names. Genome relatedness between strain SY-01T and DSM 21339T was computed using average nucleotide identity and digital DNA-DNAhybridization, which yielded values of 79.7 and 21.7 %, respectively. Based on morphological, phenotypic, phylogenetic and genomic relatedness data presented here, it is evident that strain SY-01T represents a novel species of the genus Methanolobus, and the name Methanolobus halotolerans sp. nov. is proposed. The type strain is SY-01T (=BCRC AR10051T=NBRC 113166 T=DSM 107642T).
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Affiliation(s)
- Ya Shen
- Department of Life Science, National Chung Hsing University, Taiwan, ROC
| | - Sheng-Chung Chen
- Department of Life Science, National Chung Hsing University, Taiwan, ROC.,Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University, Sanming, Fujian 365004, PR China.,School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian 365004, PR China
| | - Mei-Chin Lai
- Department of Life Science, National Chung Hsing University, Taiwan, ROC.,Agricultural Biotechnology Center, National Chung Hsing University, Taiwan, ROC
| | - Hsing-Hua Huang
- Department of Life Science, National Chung Hsing University, Taiwan, ROC
| | - Hsiu-Hui Chiu
- Biodiversity Research Center, Academia Sinica, Taiwan, ROC
| | - Sen-Lin Tang
- Biodiversity Research Center, Academia Sinica, Taiwan, ROC
| | - Denis Yu Rogozin
- Siberian Federal University, Krasnoyarsk 660041, Russia.,Institute of Biophysics Siberian Branch of Russian Academy of Sciences, Krasnoyarsk 660036, Russia
| | - Andrey G Degermendzhy
- Siberian Federal University, Krasnoyarsk 660041, Russia.,Institute of Biophysics Siberian Branch of Russian Academy of Sciences, Krasnoyarsk 660036, Russia
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18
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Chen SC, Teng NH, Lin YS, Lai MC, Chen HH, Wang CC. Methanofollis fontis sp. nov., a methanogen isolated from marine sediment near a cold seep at Four-Way Closure Ridge offshore southwestern Taiwan. Int J Syst Evol Microbiol 2020; 70:5497-5502. [PMID: 32897849 DOI: 10.1099/ijsem.0.004440] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A mesophilic, hydrogenotrophic methanogen, strain FWC-SCC2T, was isolated from deep-sea sediments collected by a real-time video multiple-corer at the C5-6 station near a cold seep at Four-Way Closure Ridge region during R/V Ocean Researcher III ORIII-1900 cruise in 2015. The cells were irregular cocci, non-motile and 0.8-1.2 µm in diameter. The methanogenic substrates utilized by strain FWC-SCC2T were formate or H2+CO2, but not acetate, methanol, ethanol or methylamines. Strain FWC-SCC2T was lysed in SDS (0.01 %, w/v). The M r of surface-layer protein was 116 400. The optimum growth conditions of strain FWC-SCC2T were 37 °C, 0.17 M NaCl and pH 6.7-7.0. The genomic DNA G+C content calculated from the genome sequence of strain FWC-SCC2T was 59.5 mol %. Phylogenetic analysis revealed that strain FWC-SCC2T was a member of the genus Methanofollis, and was most closely related to Methanofollis tationis Chile 9T (97.6 % similarity of 16S rRNA gene sequence) and shared 97.4, 95.9, 95.9 and 95.4 % with Methanofollis liminatans GKZPZT, Methanofollis formosanus ML15T, Methanofollis aquaemaris N2F9704T and Methanofollis ethanolicus HASUT, respectively. The genome relatedness values between strain FWC-SCC2T and M. tationis DSM 2702T were estimated by average nucleotide identity and digital DNA-DNA hybridization analyses and the results were 79.4 and 21.2 %, respectively. Based on the differences in physiological and biochemical properties, 16S rRNA gene phylogeny and genome relatedness presented here, it is suggested that strain FWC-SCC2T represents a novel species of the genus Methanofollis, and the name Methanofollis fontis sp. nov. is proposed. The type strain is FWC-SCC2T (=BCRC AR10052T=DSM 107935T= NBRC 113164T).
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Affiliation(s)
- Sheng-Chung Chen
- School of Resources and Chemical Engineering, Sanming University, Sanming City, Fujian, PR China.,Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Nai-Hsuan Teng
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Yu-Shih Lin
- Department of Oceanography, National Sun Yat-sen University, Kaohsiung 80424, Taiwan, ROC
| | - Mei-Chin Lai
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan, ROC.,Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Hsin-Hung Chen
- Institute of Undersea Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan, ROC
| | - Chau-Chang Wang
- Institute of Undersea Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan, ROC
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Jeddi M, Karray F, Loukil S, Mhiri N, Ben Abdallah M, Sayadi S. Anaerobic biological treatment of industrial saline wastewater: fixed bed reactor performance and analysis of the microbial community structure and abundance. ENVIRONMENTAL TECHNOLOGY 2020; 41:1715-1725. [PMID: 30403923 DOI: 10.1080/09593330.2018.1545802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/02/2018] [Indexed: 06/08/2023]
Abstract
The purpose of the present work is to treat saline Tuna fish wastewater, with the salt concentration of 43 g L-1 and total organic carbon (TOC) of 8.3 g L-1, using an anaerobic fixed bed reactor involving salt-tolerant bacteria from the natural hypersaline environment during 150 days. The highest volatile solids (VS) removal efficiency of 84.1% was recorded for the organic loading rate (OLR) of 1.04 g TOC L-1.d-1 and the lowest salinity of 14.6 g NaCl L-1. In addition, the maximum biogas production of 0.8 L-1.d-1 for a working volume of 4 L and an organic loading rate of 2.07 g TOC L-1.d-1 correlated with the decrease of Volatile fatty acids (VFA) content. The Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis (PCR-DGGE) and the phylogenetic analysis of the bacterial community showed the action of hydrolytic, acidogenic, halotolerant sulfate-reducing and halophilic fermentative bacterium during the processing time. A stable archaeal and methanogenic community's diversity including hydrogenotrophic methanogens was demonstrated with Quantitative-PCR (Q-PCR). The highest bacterial population abundance was detected for 1.45 g TOC L-1.d-1 and the important methanogenic community abundance for 2.07 g TOC L-1.d-1 may be related to the highest biogas production in this charge for an effluent salinity of 27.7 g NaCl L-1.
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Affiliation(s)
- Mariem Jeddi
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, Sfax, Tunisia
| | - Fatma Karray
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, Sfax, Tunisia
| | - Slim Loukil
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, Sfax, Tunisia
| | - Najla Mhiri
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, Sfax, Tunisia
| | - Manel Ben Abdallah
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, Sfax, Tunisia
| | - Sami Sayadi
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, Sfax, Tunisia
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20
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Chen SC, Weng CY, Lai MC, Tamaki H, Narihiro T. Comparative genomic analyses reveal trehalose synthase genes as the signature in genus Methanoculleus. Mar Genomics 2019; 47:100673. [PMID: 30935830 DOI: 10.1016/j.margen.2019.03.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/19/2019] [Accepted: 03/24/2019] [Indexed: 11/25/2022]
Abstract
To date, the only methanoarchaea isolated directly from methane hydrate bearing sediments were Methanoculleus submarinus Nankai-1T and Methanoculleus sp. MH98A. Here, we provide the genome of Methanoculleus taiwanensis CYW4T isolated from the deep-sea subseafloor sediment at the Deformation Front offshore southwestern Taiwan, where methane hydrate deposits are likely located. Through comparative genomics analyses of nine Methanoculleus strains from various habitats, 2-3 coding genes for trehalose synthases were found in all nine Methanoculleus genomes, which were not detected in other methanogens and are therefore suggested as a signature of genus Methanoculleus among methane-producing archaea. In addition, the structural genes adjacent to trehalose synthase genes are comprised of the signaling module of Per-Arnt-Sim (PAS) domain-containing proteins, Hsp20 family proteins, arabinose efflux permeases and multiple surface proteins with fasciclin-like (FAS) repeat. This indicates that trehalose synthase gene clusters in Methanoculleus might play roles in the response to various stresses and regulate carbon storage and modification of surface proteins through accumulation of trehalose. The non-gas hydrate-associated Methanoculleus strains harbor carbon-monoxide dehydrogenase (cooS/acsA) genes, which are important for the conversion of acetate to methane at the step of CO oxidation/CO2 reduction in acetoclastic methanogens and further implies that these strains may be able to utilize CO for methanogenesis in their natural habitats. In addition, both genomes of M. bourgensis strains MS2T and MAB1 harbor highly abundant transposase genes, which may be disseminated from microbial communities in their habitats, sewage treatment plants and biogas reactors, which are breeding grounds for antibiotic resistance. Through comparative genomic analyses, we gained insight into understanding the life of strictly anaerobic methane-producing archaea in various habitats, especially in methane-based deep-sea ecosystems.
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Affiliation(s)
- Sheng-Chung Chen
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Chieh-Yin Weng
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Mei-Chin Lai
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan; Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.
| | - Hideyuki Tamaki
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Takashi Narihiro
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
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21
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Pagliano G, Ventorino V, Panico A, Romano I, Pirozzi F, Pepe O. Anaerobic Process for Bioenergy Recovery From Dairy Waste: Meta-Analysis and Enumeration of Microbial Community Related to Intermediates Production. Front Microbiol 2019; 9:3229. [PMID: 30687248 PMCID: PMC6334743 DOI: 10.3389/fmicb.2018.03229] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 12/12/2018] [Indexed: 11/28/2022] Open
Abstract
Dairy wastes are widely studied for the hydrogen and methane production, otherwise the changes in microbial communities related to intermediate valuable products was not deeply investigated. Culture independent techniques are useful tools for exploring microbial communities in engineered system having new insights into their structure and function as well as potential industrial application. The deep knowledge of the microbiota involved in the anaerobic process of specific waste and by-products represents an essential step to better understand the entire process and the relation of each microbial population with biochemical intermediates and final products. Therefore, this study investigated the microbial communities involved in the laboratory-scale anaerobic digestion of a mixture of mozzarella cheese whey and buttermilk amended with 5% w/v of industrial animal manure pellets. Culture-independent methods by employing high-throughput sequencing and microbial enumerations highlighted that lactic acid bacteria, such as Lactobacillaceae and Streptococcaceae dominated the beginning of the process until about day 14 when a relevant increase in hydrogen production (more than 10 ml H2 gVS-1 from days 13 to 14) was observed. Furthermore, during incubation a gradual decrease of lactic acid bacteria was detected with a simultaneous increase of Clostridia, such as Clostridiaceae and Tissierellaceae families. Moreover, archaeal populations in the biosystem were strongly related to inoculum since the non-inoculated samples of the dairy waste mixture had a relative abundance of archaea less than 0.1%; whereas, in the inoculated samples of the same mixture several archaeal genera were identified. Among methanogenic archaea, Methanoculleus was the dominant genus during all the process especially when the methane production occurred, and its relative abundance increased up to 99% at the end of the incubation time highlighting that methane was formed from dairy wastes primarily by the hydrogenotrophic pathway in the reactors.
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Affiliation(s)
- Giorgia Pagliano
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
| | - Valeria Ventorino
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy.,Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy
| | | | - Ida Romano
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
| | - Francesco Pirozzi
- Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy.,Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Naples, Italy
| | - Olimpia Pepe
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy.,Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy
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22
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Chen SC, Huang HH, Lai MC, Weng CY, Chiu HH, Tang SL, Rogozin DY, Degermendzhy AG. Methanolobus psychrotolerans sp. nov., a psychrotolerant methanoarchaeon isolated from a saline meromictic lake in Siberia. Int J Syst Evol Microbiol 2018; 68:1378-1383. [DOI: 10.1099/ijsem.0.002685] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Sheng-Chung Chen
- Department of Life Science, National Chung Hsing University, Taiwan, ROC
| | - Hsing-Hua Huang
- Department of Life Science, National Chung Hsing University, Taiwan, ROC
| | - Mei-Chin Lai
- Agricultural Biotechnology Center, National Chung Hsing University, Taiwan, ROC
- Department of Life Science, National Chung Hsing University, Taiwan, ROC
| | - Chieh-Yin Weng
- Department of Life Science, National Chung Hsing University, Taiwan, ROC
| | - Hsiu-Hui Chiu
- Biodiversity Research Center, Academia Sinica, Taiwan, ROC
| | - Sen-Lin Tang
- Biodiversity Research Center, Academia Sinica, Taiwan, ROC
| | - Denis Yu Rogozin
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences, Krasnoyarsk 660036, Russia
- Siberian Federal University, Krasnoyarsk 660041, Russia
| | - Andrey G. Degermendzhy
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences, Krasnoyarsk 660036, Russia
- Siberian Federal University, Krasnoyarsk 660041, Russia
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23
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Koyama M, Watanabe K, Kurosawa N, Ishikawa K, Ban S, Toda T. Effect of alkaline pretreatment on mesophilic and thermophilic anaerobic digestion of a submerged macrophyte: Inhibition and recovery against dissolved lignin during semi-continuous operation. BIORESOURCE TECHNOLOGY 2017; 238:666-674. [PMID: 28494409 DOI: 10.1016/j.biortech.2017.04.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/10/2017] [Accepted: 04/12/2017] [Indexed: 06/07/2023]
Abstract
The long-term effect of alkaline pretreatment on semi-continuous anaerobic digestion (AD) of the lignin-rich submerged macrophyte Potamogeton maackianus was investigated using mesophilic and thermophilic conditions. In pretreated reactors, dissolved lignin accumulated to high levels. CH4 production under the pretreated condition was higher than that of the untreated condition, but decreased from Days 22 (mesophilic) and 42 (thermophilic). However, CH4 production subsequently recovered, although dissolved lignin accumulated. Further, the change in the microbial community was observed between conditions. These results suggest that dissolved lignin temporarily inhibited AD, although acclimatization to dissolved lignin occurred during long-term operation. During the steady state period, mesophilic conditions achieved a 42% increase in the CH4 yield using pretreatment, while thermophilic conditions yielded an 8% increment. Because volatile fatty acids accumulated even after acclimatization during the thermophilic pretreated condition and was discharged with the effluent, improvement of the methanogenic step would enable enhanced CH4 recovery.
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Affiliation(s)
- Mitsuhiko Koyama
- School of Environment and Society, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
| | - Keiko Watanabe
- Faculty of Science and Engineering, Soka University, 1-236, Tangi-machi, Hachioji, Tokyo 192-8577, Japan
| | - Norio Kurosawa
- Faculty of Science and Engineering, Soka University, 1-236, Tangi-machi, Hachioji, Tokyo 192-8577, Japan
| | - Kanako Ishikawa
- Lake Biwa Environmental Research Institute, 5-34 Yanagasaki, Otsu, Shiga 520-0022, Japan
| | - Syuhei Ban
- School of Environmental Science, University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan
| | - Tatsuki Toda
- Faculty of Science and Engineering, Soka University, 1-236, Tangi-machi, Hachioji, Tokyo 192-8577, Japan
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24
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Dalcin Martins P, Hoyt DW, Bansal S, Mills CT, Tfaily M, Tangen BA, Finocchiaro RG, Johnston MD, McAdams BC, Solensky MJ, Smith GJ, Chin YP, Wilkins MJ. Abundant carbon substrates drive extremely high sulfate reduction rates and methane fluxes in Prairie Pothole Wetlands. GLOBAL CHANGE BIOLOGY 2017; 23:3107-3120. [PMID: 28117550 DOI: 10.1111/gcb.13633] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/02/2016] [Indexed: 05/04/2023]
Abstract
Inland waters are increasingly recognized as critical sites of methane emissions to the atmosphere, but the biogeochemical reactions driving such fluxes are less well understood. The Prairie Pothole Region (PPR) of North America is one of the largest wetland complexes in the world, containing millions of small, shallow wetlands. The sediment pore waters of PPR wetlands contain some of the highest concentrations of dissolved organic carbon (DOC) and sulfur species ever recorded in terrestrial aquatic environments. Using a suite of geochemical and microbiological analyses, we measured the impact of sedimentary carbon and sulfur transformations in these wetlands on methane fluxes to the atmosphere. This research represents the first study of coupled geochemistry and microbiology within the PPR and demonstrates how the conversion of abundant labile DOC pools into methane results in some of the highest fluxes of this greenhouse gas to the atmosphere ever reported. Abundant DOC and sulfate additionally supported some of the highest sulfate reduction rates ever measured in terrestrial aquatic environments, which we infer to account for a large fraction of carbon mineralization in this system. Methane accumulations in zones of active sulfate reduction may be due to either the transport of free methane gas from deeper locations or the co-occurrence of methanogenesis and sulfate reduction. If both respiratory processes are concurrent, any competitive inhibition of methanogenesis by sulfate-reducing bacteria may be lessened by the presence of large labile DOC pools that yield noncompetitive substrates such as methanol. Our results reveal some of the underlying mechanisms that make PPR wetlands biogeochemical hotspots, which ultimately leads to their critical, but poorly recognized role in regional greenhouse gas emissions.
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Affiliation(s)
| | - David W Hoyt
- Environmental Molecular Sciences Laboratory, Richland, WA, 99350, USA
| | - Sheel Bansal
- United States Geological Survey - Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, USA
| | - Christopher T Mills
- United States Geological Survey, Crustal Geophysics and Geochemistry Science Center, Building 20, Denver Federal Center, Denver, CO, 80225, USA
| | - Malak Tfaily
- Environmental Molecular Sciences Laboratory, Richland, WA, 99350, USA
| | - Brian A Tangen
- United States Geological Survey - Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, USA
| | - Raymond G Finocchiaro
- United States Geological Survey - Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, USA
| | - Michael D Johnston
- School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Brandon C McAdams
- School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Matthew J Solensky
- United States Geological Survey - Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, USA
| | - Garrett J Smith
- Microbiology Department, The Ohio State University, Columbus, OH, 43210, USA
| | - Yu-Ping Chin
- School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Michael J Wilkins
- Microbiology Department, The Ohio State University, Columbus, OH, 43210, USA
- School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
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Draft Genome Sequence of Methanoculleus sediminis S3FaT, a Hydrogenotrophic Methanogen Isolated from a Submarine Mud Volcano in Taiwan. GENOME ANNOUNCEMENTS 2016; 4:4/2/e00308-16. [PMID: 27103730 PMCID: PMC4841145 DOI: 10.1128/genomea.00308-16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Here, we announce the genome sequence of ITALIC! Methanoculleus sediminisS3Fa(T)(DSM 29354(T)), a strict anaerobic methanoarchaeon, which was isolated from sediments near the submarine mud volcano MV4 located offshore in southwestern Taiwan. The 2.49-Mb genome consists of 2,459 predicted genes, 3 rRNAs, 48 tRNAs, and 1 ncRNA. The sequence of this novel strain may provide more information for species delineation and the roles that this strain plays in the unique marine mud volcano habitat.
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Honkalas V, Dabir A, Dhakephalkar PK. Life in the Anoxic Sub-Seafloor Environment: Linking Microbial Metabolism and Mega Reserves of Methane Hydrate. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2016; 156:235-262. [DOI: 10.1007/10_2015_5004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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27
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Holmes D, Smith J. Biologically Produced Methane as a Renewable Energy Source. ADVANCES IN APPLIED MICROBIOLOGY 2016; 97:1-61. [PMID: 27926429 DOI: 10.1016/bs.aambs.2016.09.001] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Methanogens are a unique group of strictly anaerobic archaea that are more metabolically diverse than previously thought. Traditionally, it was thought that methanogens could only generate methane by coupling the oxidation of products formed by fermentative bacteria with the reduction of CO2. However, it has recently been observed that many methanogens can also use electrons extruded from metal-respiring bacteria, biocathodes, or insoluble electron shuttles as energy sources. Methanogens are found in both human-made and natural environments and are responsible for the production of ∼71% of the global atmospheric methane. Their habitats range from the human digestive tract to hydrothermal vents. Although biologically produced methane can negatively impact the environment if released into the atmosphere, when captured, it can serve as a potent fuel source. The anaerobic digestion of wastes such as animal manure, human sewage, or food waste produces biogas which is composed of ∼60% methane. Methane from biogas can be cleaned to yield purified methane (biomethane) that can be readily incorporated into natural gas pipelines making it a promising renewable energy source. Conventional anaerobic digestion is limited by long retention times, low organics removal efficiencies, and low biogas production rates. Therefore, many studies are being conducted to improve the anaerobic digestion process. Researchers have found that addition of conductive materials and/or electrically active cathodes to anaerobic digesters can stimulate the digestion process and increase methane content of biogas. It is hoped that optimization of anaerobic digesters will make biogas more readily accessible to the average person.
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