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Fatahi-Bafghi M. Genomic and phylogenomic analysis of Fusobacteriaceae family and proposal to reclassify Fusobacterium naviforme Jungano 1909 into a novel genus as Zandiella naviformis gen. nov., comb. nov. and reclassification of Fusobacterium necrophorum subsp. funduliforme as later heterotypic synonym of Fusobacterium necrophorum subsp. necrophorum and Fusobacterium equinum as later heterotypic synonym of Fusobacterium gonidiaformans. Antonie Van Leeuwenhoek 2024; 117:34. [PMID: 38347234 DOI: 10.1007/s10482-023-01921-1] [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] [Received: 06/18/2023] [Accepted: 12/14/2023] [Indexed: 02/15/2024]
Abstract
The family Fusobacteriaceae is a large family within the phylum Fusobacteriota. The reclassification of F. naviforme as Zandiella naviformis gen. nov., comb. nov. is proposed because of the separate and distinct phylogenetic situation on the basis of the results of 16S rRNA gene sequence analysis, the genetic and genomic differences from all other species and subspecies in the Fusobacteriaceae family. The type strain is ATCC 25832; CCUG 50052; NCTC 13121. In phylogenetic trees drawn using complete genome sequences and 16S rRNA gene sequences, F. necrophorum subsp. funduliforme and F. equinum were clades together with F. necrophorum subsp. necrophorum and F. gonidiaformans, respectively. The average nucleotide identity, average amino acid identity, and digital DNA-DNA hybridization values between themes exceeded the cut-off values for species delineation. Based on these results, F. necrophorum subsp. funduliforme and F. equinum should be reclassified as later heterotypic synonyms of F. necrophorum subsp. necrophorum and F. gonidiaformans, respectively.
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Affiliation(s)
- Mehdi Fatahi-Bafghi
- Research Center for Health Technology Assessment and Medical Informatics, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
- Department of Microbiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
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2
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Frates ES, Spietz RL, Silverstein MR, Girguis P, Hatzenpichler R, Marlow JJ. Natural and anthropogenic carbon input affect microbial activity in salt marsh sediment. Front Microbiol 2023; 14:1235906. [PMID: 37744927 PMCID: PMC10512730 DOI: 10.3389/fmicb.2023.1235906] [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: 06/06/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023] Open
Abstract
Salt marshes are dynamic, highly productive ecosystems positioned at the interface between terrestrial and marine systems. They are exposed to large quantities of both natural and anthropogenic carbon input, and their diverse sediment-hosted microbial communities play key roles in carbon cycling and remineralization. To better understand the effects of natural and anthropogenic carbon on sediment microbial ecology, several sediment cores were collected from Little Sippewissett Salt Marsh (LSSM) on Cape Cod, MA, USA and incubated with either Spartina alterniflora cordgrass or diesel fuel. Resulting shifts in microbial diversity and activity were assessed via bioorthogonal non-canonical amino acid tagging (BONCAT) combined with fluorescence-activated cell sorting (FACS) and 16S rRNA gene amplicon sequencing. Both Spartina and diesel amendments resulted in initial decreases of microbial diversity as well as clear, community-wide shifts in metabolic activity. Multi-stage degradative frameworks shaped by fermentation were inferred based on anabolically active lineages. In particular, the metabolically versatile Marinifilaceae were prominent under both treatments, as were the sulfate-reducing Desulfovibrionaceae, which may be attributable to their ability to utilize diverse forms of carbon under nutrient limited conditions. By identifying lineages most directly involved in the early stages of carbon processing, we offer potential targets for indicator species to assess ecosystem health and highlight key players for selective promotion of bioremediation or carbon sequestration pathways.
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Affiliation(s)
- Erin S. Frates
- Department of Biology, Boston University, Boston, MA, United States
| | - Rachel L. Spietz
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT, United States
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States
| | | | - Peter Girguis
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, United States
| | - Roland Hatzenpichler
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT, United States
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, United States
- Thermal Biology Institute, Montana State University, Bozeman, MT, United States
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3
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Yadav S, Koenen M, Bale N, Sinninghe Damsté JS, Villanueva L. The physiology and metabolic properties of a novel, low-abundance Psychrilyobacter species isolated from the anoxic Black Sea shed light on its ecological role. ENVIRONMENTAL MICROBIOLOGY REPORTS 2021; 13:899-910. [PMID: 34668338 DOI: 10.1111/1758-2229.13012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 08/26/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
Members of the Psychrilyobacter spp. of the phylum Fusobacteria have been recently suggested to be amongst the most significant primary degraders of the detrital organic matter in sulfidic marine habitats, despite representing only a small proportion (<0.1%) of the microbial community. In this study, we have isolated a previously uncultured Psychrilyobacter species (strains SD5T and BL5; Psychrilyobacter piezotolerans sp. nov.) from the sulfidic waters (i.e., 2000 m depth) of the Black Sea and investigated its physiology and genomic capability in order to better understand potential ecological adaptation strategies. P. piezotolerans utilized a broad range of organic substituents (carbohydrates and proteins) and, remarkably, grew at sulfide concentrations up to 32 mM. These flexible physiological properties were supported by the presence of the respective metabolic pathways in the genomes of both strains. Growth at varying hydrostatic pressure (0.1-50 MPa) was sustained by modifying its membrane lipid composition. Thus, we have isolated a novel member of the 'rare biosphere', which endures the extreme conditions and may play a significant role in the degradation of detrital organic matter sinking into the sulfidic waters of the Black Sea.
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Affiliation(s)
- Subhash Yadav
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, P.O. Box 59, 1797AB, Den Burg, Texel, The Netherlands
| | - Michel Koenen
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, P.O. Box 59, 1797AB, Den Burg, Texel, The Netherlands
| | - Nicole Bale
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, P.O. Box 59, 1797AB, Den Burg, Texel, The Netherlands
| | - Jaap S Sinninghe Damsté
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, P.O. Box 59, 1797AB, Den Burg, Texel, The Netherlands
- Faculty of Geosciences, Department of Earth Sciences, Utrecht University, P.O. Box 80.021, 3508 TA, Utrecht, The Netherlands
| | - Laura Villanueva
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, P.O. Box 59, 1797AB, Den Burg, Texel, The Netherlands
- Faculty of Geosciences, Department of Earth Sciences, Utrecht University, P.O. Box 80.021, 3508 TA, Utrecht, The Netherlands
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4
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Selvarajan R, Sibanda T, Venkatachalam S, Ogola HJO, Christopher Obieze C, Msagati TA. Distribution, Interaction and Functional Profiles of Epiphytic Bacterial Communities from the Rocky Intertidal Seaweeds, South Africa. Sci Rep 2019; 9:19835. [PMID: 31882618 PMCID: PMC6934600 DOI: 10.1038/s41598-019-56269-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 12/05/2019] [Indexed: 11/16/2022] Open
Abstract
Interrelations between epiphytic bacteria and macroalgae are multifaceted and complicated, though little is known about the community structure, interaction and functions of those epiphytic bacteria. This study comprehensively characterized the epiphytic bacterial communities associated with eight different common seaweeds collected from a rocky intertidal zone on the Indian Ocean at Cape Vidal, South Africa. High-throughput sequencing analyses indicated that seaweed-associated bacterial communities were dominated by the phyla Proteobacteria, Bacteroidetes, Firmicutes, Cyanobacteria, Planctomycetes, Actinobacteria and Verrucomicrobia. Energy-dispersive X-ray (EDX) analysis showed the presence of elemental composition in the surface of examined seaweeds, in varying concentrations. Cluster analysis showed that bacterial communities of brown seaweeds (SW2 and SW4) were closely resembled those of green seaweeds (SW1) and red seaweeds (SW7) while those of brown seaweeds formed a separate branch. Predicted functional capabilities of epiphytic bacteria using PICRUSt analysis revealed abundance of genes related to metabolic and biosynthetic activities. Further important identified functional interactions included genes for bacterial chemotaxis, which could be responsible for the observed association and network of elemental-microbes interaction. The study concludes that the diversity of epiphytic bacteria on seaweed surfaces is greatly influenced by algal organic exudates as well as elemental deposits on their surfaces, which triggers chemotaxis responses from epiphytic bacteria with the requisite genes to metabolise those substrates.
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Affiliation(s)
- Ramganesh Selvarajan
- Department of Environmental Sciences, College of Agricultural and Environmental Sciences, UNISA, Johannesburg, South Africa.
| | - Timothy Sibanda
- Department of Biological Sciences, University of Namibia, Mandume Ndemufayo Ave, Pionierspark, Windhoek, Namibia
| | | | - Henry J O Ogola
- Department of Environmental Sciences, College of Agricultural and Environmental Sciences, UNISA, Johannesburg, South Africa.,Centre for Research, Innovation and Technology, Jaramogi Oginga Odinga University of Science and Technology, Bondo, Kenya
| | | | - Titus A Msagati
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa-Science Campus, Florida, South Africa
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5
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Terrisse F, Cravo-Laureau C, Noël C, Cagnon C, Dumbrell AJ, McGenity TJ, Duran R. Variation of Oxygenation Conditions on a Hydrocarbonoclastic Microbial Community Reveals Alcanivorax and Cycloclasticus Ecotypes. Front Microbiol 2017; 8:1549. [PMID: 28861063 PMCID: PMC5562018 DOI: 10.3389/fmicb.2017.01549] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 07/31/2017] [Indexed: 12/26/2022] Open
Abstract
Deciphering the ecology of marine obligate hydrocarbonoclastic bacteria (MOHCB) is of crucial importance for understanding their success in occupying distinct niches in hydrocarbon-contaminated marine environments after oil spills. In marine coastal sediments, MOHCB are particularly subjected to extreme fluctuating conditions due to redox oscillations several times a day as a result of mechanical (tide, waves and currents) and biological (bioturbation) reworking of the sediment. The adaptation of MOHCB to the redox oscillations was investigated by an experimental ecology approach, subjecting a hydrocarbon-degrading microbial community to contrasting oxygenation regimes including permanent anoxic conditions, anoxic/oxic oscillations and permanent oxic conditions. The most ubiquitous MOHCB, Alcanivorax and Cycloclasticus, showed different behaviors, especially under anoxic/oxic oscillation conditions, which were more favorable for Alcanivorax than for Cycloclasticus. The micro-diversity of 16S rRNA gene transcripts from these genera revealed specific ecotypes for different oxygenation conditions and their dynamics. It is likely that such ecotypes allow the colonization of distinct ecological niches that may explain the success of Alcanivorax and Cycloclasticus in hydrocarbon-contaminated coastal sediments during oil-spills.
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Affiliation(s)
- Fanny Terrisse
- IPREM UMR CNRS 5254, Equipe Environnement et Microbiologie, MELODY Group, Université de Pau et des Pays de l'AdourPau, France
| | - Cristiana Cravo-Laureau
- IPREM UMR CNRS 5254, Equipe Environnement et Microbiologie, MELODY Group, Université de Pau et des Pays de l'AdourPau, France
| | - Cyril Noël
- IPREM UMR CNRS 5254, Equipe Environnement et Microbiologie, MELODY Group, Université de Pau et des Pays de l'AdourPau, France
| | - Christine Cagnon
- IPREM UMR CNRS 5254, Equipe Environnement et Microbiologie, MELODY Group, Université de Pau et des Pays de l'AdourPau, France
| | - Alex J Dumbrell
- School of Biological Sciences, University of EssexColchester, United Kingdom
| | - Terry J McGenity
- School of Biological Sciences, University of EssexColchester, United Kingdom
| | - Robert Duran
- IPREM UMR CNRS 5254, Equipe Environnement et Microbiologie, MELODY Group, Université de Pau et des Pays de l'AdourPau, France
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6
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Roalkvam I, Bredy F, Baumberger T, Pedersen RB, Steen IH. Hypnocyclicus thermotrophus gen. nov., sp. nov. isolated from a microbial mat in a hydrothermal vent field. Int J Syst Evol Microbiol 2015; 65:4521-4525. [PMID: 26373292 DOI: 10.1099/ijsem.0.000606] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The bacterial strain, IR-2T, was isolated from a microbial mat sampled near a hydrothermal vent in the Greenland Sea. Phylogenetic analysis, based on the 16S rRNA gene, showed that the closest relatives of IR-2T were Ilyobacter tartaricus, Ilyobacter insuetus, Propionigenium modestum and Fusobacterium varium (91 % 16S rRNA gene sequence similarity). The cells of the novel strain were Gram-stain-negative and pleomorphic; changing from long motile rods to non-motile ring structures during the growth cycle. Growth occurred at 20-55 °C (optimally at 48 °C), with 1-6 % (w/v) NaCl (optimally with 2 %), and at pH 5.3-8.0 (optimally at pH 6.0-8.0). The strain had obligate fermentative growth on various sugars and yeast extract. The DNA G+C content of strain IR-2T was 25.7 mol%. The cell sugars comprised mainly ribose, mannose and glucose, while the main polar lipids were glycolipids, phospholipids, phosphatidylglycerol and diphosphatidylglycerol. The fatty acid content of strain IR-2 was dominated by saturated and unsaturated iso-branched or anteiso-branched forms. Strain IR-2 represents a novel genus and species, for which the name Hypnocyclicus thermotrophus gen. nov., sp. nov. is proposed. The type strain is IR-2T ( = DSM 100055 = JCM 30901).
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Affiliation(s)
- Irene Roalkvam
- Center for Geobiology, University of Bergen, Allégaten 41, 5007 Bergen, Norway.,Department of Biology, University of Bergen, Thormøhlensgate 53A/B, 5006 Bergen, Norway
| | - Florian Bredy
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745 Jena, Germany
| | - Tamara Baumberger
- Center for Geobiology, University of Bergen, Allégaten 41, 5007 Bergen, Norway.,Department of Earth Science, University of Bergen, Allégaten 41, 5007 Bergen, Norway
| | - Rolf-B Pedersen
- Center for Geobiology, University of Bergen, Allégaten 41, 5007 Bergen, Norway.,Department of Earth Science, University of Bergen, Allégaten 41, 5007 Bergen, Norway
| | - Ida Helene Steen
- Center for Geobiology, University of Bergen, Allégaten 41, 5007 Bergen, Norway.,Department of Biology, University of Bergen, Thormøhlensgate 53A/B, 5006 Bergen, Norway
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7
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An D, Caffrey SM, Soh J, Agrawal A, Brown D, Budwill K, Dong X, Dunfield P, Foght J, Gieg LM, Hallam SJ, Hanson NW, He Z, Jack TR, Klassen J, Konwar KM, Kuatsjah E, Li C, Larter S, Leopatra V, Nesbø CL, Oldenburg T, Pagé A, Ramos-Padron E, Rochman FF, Saidi-Mehrabad A, Sensen CW, Sipahimalani P, Song YC, Wilson S, Wolbring G, Wong ML, Voordouw G. Metagenomics of hydrocarbon resource environments indicates aerobic taxa and genes to be unexpectedly common. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:10708-17. [PMID: 23889694 PMCID: PMC3864245 DOI: 10.1021/es4020184] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 07/23/2013] [Accepted: 07/26/2013] [Indexed: 05/29/2023]
Abstract
Oil in subsurface reservoirs is biodegraded by resident microbial communities. Water-mediated, anaerobic conversion of hydrocarbons to methane and CO2, catalyzed by syntrophic bacteria and methanogenic archaea, is thought to be one of the dominant processes. We compared 160 microbial community compositions in ten hydrocarbon resource environments (HREs) and sequenced twelve metagenomes to characterize their metabolic potential. Although anaerobic communities were common, cores from oil sands and coal beds had unexpectedly high proportions of aerobic hydrocarbon-degrading bacteria. Likewise, most metagenomes had high proportions of genes for enzymes involved in aerobic hydrocarbon metabolism. Hence, although HREs may have been strictly anaerobic and typically methanogenic for much of their history, this may not hold today for coal beds and for the Alberta oil sands, one of the largest remaining oil reservoirs in the world. This finding may influence strategies to recover energy or chemicals from these HREs by in situ microbial processes.
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Affiliation(s)
- Dongshan An
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Sean M. Caffrey
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Jung Soh
- Visual Genomics Centre, Faculty
of Medicine, University of Calgary, Calgary,
Alberta, T2N 1N4, Canada
| | - Akhil Agrawal
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Damon Brown
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Karen Budwill
- Environment and Carbon Management Division, Alberta Innovates−Technology Futures, Edmonton,
Alberta, T6N 1E4, Canada
| | - Xiaoli Dong
- Visual Genomics Centre, Faculty
of Medicine, University of Calgary, Calgary,
Alberta, T2N 1N4, Canada
| | - Peter
F. Dunfield
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Julia Foght
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, P6G 2M7,
Canada
| | - Lisa M. Gieg
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Steven J. Hallam
- Department of Microbiology &
Immunology, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
- Graduate Program in Bioinformatics, University of British Columbia, Vancouver, British
Columbia, V6T 1Z4, Canada
- Michael
Smith Genome Sciences Centre,
Genome Sciences Centre, BC Cancer Agency, Vancouver, British Columbia, V5Z 1L3, Canada
| | - Niels W. Hanson
- Genome Sciences and Technology
Training Program, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Zhiguo He
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Thomas R. Jack
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Jonathan Klassen
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, P6G 2M7,
Canada
| | - Kishori M. Konwar
- Department of Microbiology &
Immunology, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Eugene Kuatsjah
- Genome Sciences and Technology
Training Program, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Carmen Li
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, P6G 2M7,
Canada
| | - Steve Larter
- Department
of Geosciences, University of Calgary,
Calgary, Alberta, T2N 1N4, Canada
| | - Verlyn Leopatra
- Department of Community Health
Sciences, University of Calgary, Alberta,
T2N 1N4, Canada
| | - Camilla L. Nesbø
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, P6G 2M7,
Canada
- Department of Biology, University of Oslo, 0313 Oslo, Norway
| | - Thomas Oldenburg
- Department
of Geosciences, University of Calgary,
Calgary, Alberta, T2N 1N4, Canada
| | - Antoine
P. Pagé
- Department of Microbiology &
Immunology, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Esther Ramos-Padron
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Fauziah F. Rochman
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | | | - Christoph W. Sensen
- Visual Genomics Centre, Faculty
of Medicine, University of Calgary, Calgary,
Alberta, T2N 1N4, Canada
| | - Payal Sipahimalani
- Michael
Smith Genome Sciences Centre,
Genome Sciences Centre, BC Cancer Agency, Vancouver, British Columbia, V5Z 1L3, Canada
| | - Young C. Song
- Graduate Program in Bioinformatics, University of British Columbia, Vancouver, British
Columbia, V6T 1Z4, Canada
| | - Sandra Wilson
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Gregor Wolbring
- Department of Community Health
Sciences, University of Calgary, Alberta,
T2N 1N4, Canada
| | - Man-Ling Wong
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Gerrit Voordouw
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
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Rittmann S, Herwig C. A comprehensive and quantitative review of dark fermentative biohydrogen production. Microb Cell Fact 2012; 11:115. [PMID: 22925149 PMCID: PMC3443015 DOI: 10.1186/1475-2859-11-115] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 08/03/2012] [Indexed: 01/25/2023] Open
Abstract
Biohydrogen production (BHP) can be achieved by direct or indirect biophotolysis, photo-fermentation and dark fermentation, whereof only the latter does not require the input of light energy. Our motivation to compile this review was to quantify and comprehensively report strains and process performance of dark fermentative BHP. This review summarizes the work done on pure and defined co-culture dark fermentative BHP since the year 1901. Qualitative growth characteristics and quantitative normalized results of H2 production for more than 2000 conditions are presented in a normalized and therefore comparable format to the scientific community.Statistically based evidence shows that thermophilic strains comprise high substrate conversion efficiency, but mesophilic strains achieve high volumetric productivity. Moreover, microbes of Thermoanaerobacterales (Family III) have to be preferred when aiming to achieve high substrate conversion efficiency in comparison to the families Clostridiaceae and Enterobacteriaceae. The limited number of results available on dark fermentative BHP from fed-batch cultivations indicates the yet underestimated potential of this bioprocessing application. A Design of Experiments strategy should be preferred for efficient bioprocess development and optimization of BHP aiming at improving medium, cultivation conditions and revealing inhibitory effects. This will enable comparing and optimizing strains and processes independent of initial conditions and scale.
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Affiliation(s)
- Simon Rittmann
- Institute of Chemical Engineering, Research Area Biochemical Engineering, Gumpendorferstraße 1a, Vienna University of Technology, Vienna, 1060, Austria
| | - Christoph Herwig
- Institute of Chemical Engineering, Research Area Biochemical Engineering, Gumpendorferstraße 1a, Vienna University of Technology, Vienna, 1060, Austria
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9
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Sikorski J, Chertkov O, Lapidus A, Nolan M, Lucas S, Del Rio TG, Tice H, Cheng JF, Tapia R, Han C, Goodwin L, Pitluck S, Liolios K, Ivanova N, Mavromatis K, Mikhailova N, Pati A, Chen A, Palaniappan K, Land M, Hauser L, Chang YJ, Jeffries CD, Brambilla E, Yasawong M, Rohde M, Pukall R, Spring S, Göker M, Woyke T, Bristow J, Eisen JA, Markowitz V, Hugenholtz P, Kyrpides NC, Klenk HP. Complete genome sequence of Ilyobacter polytropus type strain (CuHbu1). Stand Genomic Sci 2010; 3:304-14. [PMID: 21304735 PMCID: PMC3035301 DOI: 10.4056/sigs.1273360] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Ilyobacter polytropus Stieb and Schink 1984 is the type species of the genus Ilyobacter, which belongs to the fusobacterial family Fusobacteriaceae. The species is of interest because its members are able to ferment quite a number of sugars and organic acids. I. polytropus has a broad versatility in using various fermentation pathways. Also, its members do not degrade poly-β-hydroxybutyrate but only the monomeric 3-hydroxybutyrate. This is the first completed genome sequence of a member of the genus Ilyobacter and the second sequence from the family Fusobacteriaceae. The 3,132,314 bp long genome with its 2,934 protein-coding and 108 RNA genes consists of two chromosomes (2 and 1 Mbp long) and one plasmid, and is a part of the Genomic Encyclopedia of Bacteria and Archaea project.
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10
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Zhao JS, Manno D, Hawari J. Psychrilyobacter atlanticus gen. nov., sp. nov., a marine member of the phylum Fusobacteria that produces H2 and degrades nitramine explosives under low temperature conditions. Int J Syst Evol Microbiol 2009; 59:491-7. [PMID: 19244428 DOI: 10.1099/ijs.0.65263-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-negative and obligately anaerobic marine bacterium, strain HAW-EB21(T), was isolated in a previous study from marine sediment from the Atlantic Ocean, near Halifax Harbor, Canada, and found to have the potential to degrade both hexahydro-1,3,5-trinitro-1,3,5-triazine and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine. In the present study, phylogenetic analyses showed that strain HAW-EB21(T) was only distantly related to the genera Propionigenium and Ilyobacter with 6.6-7.5 % and 8.2-10.5 % dissimilarity as measured by 16S rRNA and 23S rRNA gene sequence analyses, respectively. Strain HAW-EB21(T) displayed unique properties in being psychrotrophic (18.5 degrees C optimum) and unable to utilize any of the carbon substrates (succinate, l-tartrate, 3-hydroxybutyrate, quinate or shikimate) used for isolating members of the genera Propionigenium and Ilyobacter. Strain HAW-EB21(T) utilized glucose, fructose, maltose, N-acetyl-d-glucosamine, citrate, pyruvate, fumarate and Casitone as carbon sources and produced H(2) and acetate as the major fermentation products. Cells grown at 10 degrees C produced C(15 : 1) (30 %), C(16 : 1)omega7 (15 %) and C(16 : 0) (16 %) as major membrane fatty acids. The novel strain had a genomic DNA G+C content of 28.1 mol%, lower than the values of the genera Ilyobacter and Propionigenium. Based on the present results, the novel isolate is suggested to be a member of a new genus for which the name Psychrilyobacter atlanticus gen. nov., sp. nov. is proposed. The type strain of the type species is HAW-EB21(T) (=DSM 19335(T)=JCM 14977(T)).
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Affiliation(s)
- Jian-Shen Zhao
- Biotechnology Research Institute, National Research Council of Canada, 6100 Royalmount Ave, Montreal, Quebec H4P 2R2, Canada.
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Meier T, von Ballmoos C, Neumann S, Kaim G. Complete DNA sequence of the atp operon of the sodium-dependent F1Fo ATP synthase from Ilyobacter tartaricus and identification of the encoded subunits. BIOCHIMICA ET BIOPHYSICA ACTA 2003; 1625:221-6. [PMID: 12531483 DOI: 10.1016/s0167-4781(02)00625-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The atp operon of Ilyobacter tartaricus, strain DSM 2382, was completely sequenced using conventional and inverse polymerase chain reaction (i-PCR) techniques. It contains nine open reading frames that were attributed to eight structural genes of the F(1)F(o) ATP synthase and the atpI gene, which is not part of the enzyme complex. The initiation codons of all atp genes, except that of atpB coding for the a subunit, were identified by the corresponding N-terminal amino acid sequence. The hydrophobic a subunit was identified by MALDI mass spectrometry. The atp genes of I. tartaricus are arranged in one operon with the sequence atpIBEFHAGDC comprising 6,992 base pairs with a GC content of 38.1%. The F(1)F(o) ATP synthase of I. tartaricus has a calculated molecular mass of 510 kDa and includes 4,810 amino acids. The gene sequences and products reveal significant identities to atp genes of other Na(+)-translocating F(1)F(o) ATP synthases, especially in the F(o) subunits a and c which are directly involved in ion translocation.
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Affiliation(s)
- Thomas Meier
- Institut für Mikrobiologie, Eidgenössische Technische Hochschule, Schmelzbergstrasse 7, LFV, CH-8092 Zürich, Switzerland
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