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Sun R, Li Q. Exogenous additive ferric sulfate regulates sulfur-oxidizing bacteria in cow manure composting to promote carbon fixation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:32212-32224. [PMID: 38649605 DOI: 10.1007/s11356-024-33417-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/17/2024] [Indexed: 04/25/2024]
Abstract
Enhancing carbon fixation in the composting process was of great significance in the era of massive generation of organic solid waste. In this study, the experimental results showed that the contents of dissolved organic matter (DOM) in the experimental group (CT) were 37.58% higher than those in the control group (CK). The CO2 emission peaked on day 5, and the value of CK was 1.34 times that of CT. Significant differences were observed between the contents of sulfur fractions in CT and CK. This phenomenon may be due to the suppression of sulfur-reducing gene expression in CT. On day 51 of composting, the abundance of sulfur-oxidizing bacteria (SOB) Rhodobacter (5.33%), Rhodovulum (14.76%), and Thioclava (23.83%) in CT was higher than that in CK. In summary, the composting fermentation regulated by Fe2(SO4)3 increased the sulfate content, enhanced the expression of sulfur-oxidizing genes and SOB, and ultimately promoted carbon sequestration during composting.
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Affiliation(s)
- Ru Sun
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Qunliang Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China.
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2
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Litterio M, Castello L, Venuta ME, Abel S, Fernández-Canigia L, Legaria MC, Rollet R, Vaustat D, Azula N, Fox B, Otero S, Maldonado ML, Mangieri NA, Rossetti MA, Predari SC, Cejas D, Barberis C. Comparison of two MALDI-TOF MS systems for the identification of clinically relevant anaerobic bacteria in Argentina. Rev Argent Microbiol 2024; 56:33-61. [PMID: 38368217 DOI: 10.1016/j.ram.2023.12.001] [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: 02/20/2023] [Revised: 10/02/2023] [Accepted: 12/05/2023] [Indexed: 02/19/2024] Open
Abstract
The aim of this study was to compare the performance of two MALDI-TOF MS systems in the identification of clinically relevant strict anaerobic bacteria. The 16S rRNA gene sequencing was the gold standard method when discrepancies or inconsistencies were observed between platforms. A total of 333 isolates were recovered from clinical samples of different centers in Buenos Aires City between 2016 and 2021. The isolates were identified in duplicate using two MALDI-TOF MS systems, BD Bruker Biotyper (Bruker Daltonics, Bremen, Germany) and Vitek MS (bioMèrieux, Marcy-l'Etoile, France). Using the Vitek MS system, the identification of anaerobic isolates yielded the following percentages: 65.5% (n: 218) at the species or species-complex level, 71.2% (n: 237) at the genus level, 29.4% (n: 98) with no identification and 5.1% (n: 17) with misidentification. Using the Bruker Biotyper system, the identification rates were as follows: 85.3% (n: 284) at the species or species-complex level, 89.7% (n: 299) at the genus level, 14.1% (n: 47) with no identification and 0.6% (n: 2) with misidentification. Differences in the performance of both methods were statistically significant (p-values <0.0001). In conclusion, MALDI-TOF MS systems speed up microbial identification and are particularly effective for slow-growing microorganisms, such as anaerobic bacteria, which are difficult to identify by traditional methods. In this study, the Bruker system showed greater accuracy than the Vitek system. In order to be truly effective, it is essential to update the databases of both systems by increasing the number of each main spectrum profile within the platforms.
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Affiliation(s)
- Mirta Litterio
- Hospital de Pediatría Prof. Dr. Juan P. Garrahan, Buenos Aires, Argentina
| | - Liliana Castello
- Universidad de Buenos Aires, Instituto de Investigaciones Médicas Alfredo Lanari, Departamento de Microbiología, Buenos Aires, Argentina
| | - María Elena Venuta
- Hospital de Pediatría Prof. Dr. Juan P. Garrahan, Buenos Aires, Argentina
| | - Sofía Abel
- Hospital de Pediatría Prof. Dr. Juan P. Garrahan, Buenos Aires, Argentina
| | | | - María Cristina Legaria
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Bioquímica Clínica, Cátedra de Microbiología Clínica, Buenos Aires, Argentina
| | - Raquel Rollet
- Hospital de Enfermedades Infecciosas Dr. Francisco Javier Muñiz, Buenos Aires, Argentina
| | - Daniela Vaustat
- Hospital de Enfermedades Infecciosas Dr. Francisco Javier Muñiz, Buenos Aires, Argentina
| | - Natalia Azula
- Centro de Educación Médica e Investigaciones Clínicas Norberto Quirno (CEMIC), Buenos Aires, Argentina
| | | | - Silvina Otero
- Hospital de Pediatría Prof. Dr. Juan P. Garrahan, Buenos Aires, Argentina
| | | | - Natalia Alejandra Mangieri
- Universidad de Buenos Aires, Instituto de Investigaciones Médicas Alfredo Lanari, Departamento de Microbiología, Buenos Aires, Argentina
| | - María Adelaida Rossetti
- Hospital Interzonal de Agudos Presidente Perón, Avellaneda, Provincia de Buenos Aires, Argentina
| | - Silvia Carla Predari
- Universidad de Buenos Aires, Instituto de Investigaciones Médicas Alfredo Lanari, Departamento de Microbiología, Buenos Aires, Argentina
| | - Daniela Cejas
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Investigaciones en Bacteriología y Virología Molecular (IBaViM), Buenos Aires, Argentina; CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - Claudia Barberis
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Bioquímica Clínica, Cátedra de Microbiología Clínica, Buenos Aires, Argentina.
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3
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Qing C, Nicol A, Li P, Planer-Friedrich B, Yuan C, Kou Z. Different sulfide to arsenic ratios driving arsenic speciation and microbial community interactions in two alkaline hot springs. ENVIRONMENTAL RESEARCH 2023; 218:115033. [PMID: 36502897 DOI: 10.1016/j.envres.2022.115033] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/21/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Arsenic (As) is ubiquitous in geothermal fluids, which threatens both water supply safety and local ecology. The co-occurrence of sulfur (S) and As increases the complexity of As migration and transformation in hot springs. Microorganisms play important roles in As-S transformation processes. In the present study, two Tibetan alkaline hot springs (designated Gulu [GL] and Daba [DB]) with different total As concentrations (0.88 mg/L and 12.42 mg/L, respectively) and different sulfide/As ratios (3.97 and 0.008, respectively) were selected for investigating interactions between As-S geochemistry and microbial communities along the outflow channels. The results showed that As-S transformation processes were similar, although concentrations and percentages of As and S species differed between the two hot springs. Thioarsenates were detected at the vents of the hot springs (18% and 0.32%, respectively), and were desulfurized to arsenite along the drainage channel. Arsenite was finally oxidized to arsenate (532 μg/L and 12,700 μg/L, respectively). Monothioarsenate, total As, and sulfate were the key factors shaping the changes in microbial communities with geochemical gradients. The relative abundances of sulfur reduction genes (dsrAB) and arsenate reduction genes (arsC) were higher in upstream portions of GL explaining high thiolation. Arsenite oxidation genes (aoxAB) were relatively abundant in downstream parts of GL and at the vent of DB explaining low thiolation. Sulfur oxidation genes (soxABXYZ) were abundant in GL and DB. Putative sulfate-reducing bacteria (SRB), such as Desulfuromusa and Clostridium, might be involved in forming thioarsenates by producing reduced S for chemical reactions with arsenite. Sulfur-oxidizing bacteria (SOB), such as Elioraea, Pseudoxanthomonas and Pseudomonas, and arsenite-oxidizing bacteria (AsOB) such as Thermus, Sulfurihydrogenibium and Hydrogenophaga, may be responsible for the oxidation of As-bound S, thereby desulfurizing thioarsenates, forming arsenite and, by further abiotic or microbial oxidation, arsenate. This study improves our understanding of As and S biogeochemistry in hot springs.
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Affiliation(s)
- Chun Qing
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074, Wuhan, Hubei, PR China; Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, 430074, Wuhan, Hubei, PR China.
| | - Alan Nicol
- Environmental Geochemistry Group, Bayreuth Center for Ecology and Environmental Research (BAYCEER), Bayreuth University, 95440, Bayreuth, Germany.
| | - Ping Li
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074, Wuhan, Hubei, PR China; Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, 430074, Wuhan, Hubei, PR China.
| | - Britta Planer-Friedrich
- Environmental Geochemistry Group, Bayreuth Center for Ecology and Environmental Research (BAYCEER), Bayreuth University, 95440, Bayreuth, Germany.
| | - Changguo Yuan
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074, Wuhan, Hubei, PR China; Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, 430074, Wuhan, Hubei, PR China.
| | - Zhu Kou
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074, Wuhan, Hubei, PR China; Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, 430074, Wuhan, Hubei, PR China.
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4
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Jien SH, Kuo YL, Liao CS, Wu YT, Igalavithana AD, Tsang DCW, Ok YS. Effects of field scale in situ biochar incorporation on soil environment in a tropical highly weathered soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 272:116009. [PMID: 33257150 DOI: 10.1016/j.envpol.2020.116009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 11/01/2020] [Accepted: 11/04/2020] [Indexed: 06/12/2023]
Abstract
Biochar has been proven as a soil amendment to improve soil environment. However, mechanistic understanding of biochar on soil physical properties and microbial community remains unclear. In this study, a wood biochar (WB), was incorporated into a highly weathered tropical soil, and after 1 year the in situ changes in soil properties and microbial community were evaluated. A field trial was conducted for application of compost, wood biochar, and polyacrylamide. Microstructure and morphological features of the soils were characterized through 3D X-ray microscopy and polarized microscopy. Soil microbial communities were identified through next-generation sequencing (NGS). After incubation, the number of pores and connection throats between the pores of biochar treated soil increased by 3.8 and 7.2 times, respectively, compared to the control. According to NGS results, most sequences belonged to Anaerolinea thermolimosa, Caldithrix palaeochoryensis, Chthoniobacter flavus, and Cohnella soli. Canonical correlation analysis (CCA) further demonstrated that the microbial community structure was determined by inorganic N (IN), available P (AP), pH, soil organic C (SOC), porosity, bulk density (BD), and aggregate stability. The treatments with co-application of biochar and compost facilitated the dominance of Cal. palaeochoryensis, Cht. flavus, and Coh. soli, all of which promoted organic matter decomposition and ammonia oxidation in the soil. The apparent increases in IN, AP, porosity, and SOC caused by the addition of biochar and compost may be the proponents of changes in soil microbial communities. The co-application of compost and biochar may be a suitable strategy for real world biochar incorporation in highly weathered soil.
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Affiliation(s)
- Shih-Hao Jien
- Department of Soil and Water Conservation, National Pingtung University of Science and Technology, Pingtung, 91201, Taiwan
| | - Yu-Lin Kuo
- Department of Civil Engineering, National Pingtung University of Science and Technology, Pingtung, 91201, Taiwan
| | - Chien-Sen Liao
- Department of Civil and Ecological Engineering, I-Shou University, Kaohsiung, 84001, Taiwan
| | - Yu-Ting Wu
- Department of Forestry, National Pingtung University of Science and Technology, Pingtung, 91201, Taiwan
| | - Avanthi Deshani Igalavithana
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, South Korea; Department of Soil Science, Faculty of Agriculture, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, South Korea.
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5
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DJOUADI LYDIANEÏLA, GUEZLANE-TEBIBEL NADJET, MANSOURI KENZA, BOUMERDASSI HANANE, ARAB KARIM, FARDEAU MARIELAURE, NATECHE FARIDA. Multidrug-resistant Opportunistic and Pathogenic Bacteria Contaminate Algerian Banknotes Currency. Pol J Microbiol 2020; 69:491-501. [PMID: 33574877 PMCID: PMC7812368 DOI: 10.33073/pjm-2020-053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 12/16/2022] Open
Abstract
Currency is one of the most exchanged items in human communities as it is used daily in exchange for goods and services. It is handled by persons with different hygiene standards and can transit in different environments. Hence, money can constitute a reservoir for different types of human pathogens. This study aimed to evaluate the potential of Algerian banknotes to shelter opportunistic pathogenic and multiresistant bacteria. To that end, 200 circulating notes of four different denominations were collected from various places and analyzed for their bacterial loads and contents. Besides, predominant strains were identified and characterized by biochemical and molecular methods, and their resistance profiles against 34 antibiotics were determined. Our results indicated that 100% of the studied banknotes were contaminated with bacteria. The total bacterial concentrations were relatively high, and different bacterial groups were grown, showing important diversity. In total, 48 predominant strains were identified as belonging to 17 genera. Staphylococcus and Micrococcus were the most prevalent genera, followed by Bacillus, Pseudomonas, and Acinetobacter. Antibiotic susceptibility testing showed that all the isolates harbored resistance to at least two molecules, and worrying resistance levels were observed. These findings prove that Algerian currency harbors opportunistic multiresistant bacteria and could potentially act as a vehicle for the spread of bacterial diseases and as a reservoir for antibiotic resistance genes among the community. Therefore, no cash payment systems should be developed and generalized to minimize cash handling and subsequent potential health risks.
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Affiliation(s)
- LYDIA NEÏLA DJOUADI
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Algiers, Algeria
| | - NADJET GUEZLANE-TEBIBEL
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Algiers, Algeria
| | - KENZA MANSOURI
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Algiers, Algeria
| | - HANANE BOUMERDASSI
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Algiers, Algeria
| | - KARIM ARAB
- Laboratoire Valorisation et Conservation des Ressources Biologiques, Department of Agronomy, Faculty of Sciences, Université M’hamed Bougara, Boumerdes, Algeria
| | | | - FARIDA NATECHE
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Algiers, Algeria
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6
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Hewavitharana SS, Klarer E, Reed AJ, Leisso R, Poirier B, Honaas L, Rudell DR, Mazzola M. Temporal Dynamics of the Soil Metabolome and Microbiome During Simulated Anaerobic Soil Disinfestation. Front Microbiol 2019; 10:2365. [PMID: 31681226 PMCID: PMC6803440 DOI: 10.3389/fmicb.2019.02365] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 09/30/2019] [Indexed: 11/13/2022] Open
Abstract
Significant interest exists in engineering the soil microbiome to attain suppression of soil-borne plant diseases. Anaerobic soil disinfestation (ASD) has potential as a biologically regulated disease control method; however, the role of specific metabolites and microbial community dynamics contributing to ASD mediated disease control is mostly uncharacterized. Understanding the trajectory of co-evolutionary processes leading to syntrophic generation of functional metabolites during ASD is a necessary prelude to the predictive utilization of this disease management approach. Consequently, metabolic and microbial community profiling were used to generate highly dimensional datasets and network analysis to identify sequential transformations through aerobic, facultatively anaerobic, and anaerobic soil phases of the ASD process and distinct groups of metabolites and microorganisms linked with those stages. Transient alterations in abundance of specific microbial groups, not consistently accounted for in previous studies of the ASD process, were documented in this time-course study. Such events initially were associated with increases and subsequent diminution in highly labile metabolites conferred by the carbon input. Proliferation and dynamic compositional changes in the Firmicutes community continued throughout the anaerobic phase and was linked to temporal changes in metabolite abundance including accumulation of small chain organic acids, methyl sulfide compounds, hydrocarbons, and p-cresol with antimicrobial properties. Novel potential modes of disease control during ASD were identified and the importance of the amendment and "community metabolism" for temporally supplying specific classes of labile compounds were revealed.
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Affiliation(s)
| | - Emmi Klarer
- Department of Plant Pathology, Washington State University, Wenatchee, WA, United States
| | - Andrew J. Reed
- United States Department of Agriculture-Agricultural Research Service, Physiology and Pathology of Tree Fruits Research, Wenatchee, WA, United States
| | - Rachel Leisso
- United States Department of Agriculture-Agricultural Research Service, Physiology and Pathology of Tree Fruits Research, Wenatchee, WA, United States
| | - Brenton Poirier
- United States Department of Agriculture-Agricultural Research Service, Physiology and Pathology of Tree Fruits Research, Wenatchee, WA, United States
| | - Loren Honaas
- United States Department of Agriculture-Agricultural Research Service, Physiology and Pathology of Tree Fruits Research, Wenatchee, WA, United States
| | - David R. Rudell
- United States Department of Agriculture-Agricultural Research Service, Physiology and Pathology of Tree Fruits Research, Wenatchee, WA, United States
| | - Mark Mazzola
- United States Department of Agriculture-Agricultural Research Service, Physiology and Pathology of Tree Fruits Research, Wenatchee, WA, United States
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7
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Bilen M, Mbogning Fonkou MD, Nguyen TT, Richez M, Daoud Z, Fournier PE, Raoult D, Cadoret F. Miniphocibacter massiliensis gen. nov., sp. nov., a new species isolated from the human gut and its taxono-genomics description. Microbiologyopen 2018; 8:e00735. [PMID: 30280501 PMCID: PMC6528615 DOI: 10.1002/mbo3.735] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/11/2018] [Accepted: 08/20/2018] [Indexed: 12/23/2022] Open
Abstract
With the aim of describing the human microbiota by the means of culture methods, culturomics was developed in order to target previously un‐isolated bacterial species and describe it via the taxono‐genomics approach. While performing a descriptive study of the human gut microbiota of the pygmy people, strain Marseille‐P4678T has been isolated from a stool sample of a healthy 39‐year‐old pygmy male. Cells of this strain were Gram‐positive cocci, spore‐forming, non‐motile, catalase‐positive and oxidase‐negative, and grow optimally at 37°C under anaerobic conditions. Its 16S rRNA gene sequence exhibited 89.69% of sequence similarity with Parvimonas micra strain 3119BT (NR 036934.1), its phylogenetically closest species with standing in nomenclature. The genome of strain Marseille‐P4678T is 2,083,161 long with 28.26 mol% of G+C content. Based on its phenotypic, biochemical, genotypic and proteomic profile, this bacterium was classified as a new bacterial genus and species Miniphocibacter massiliensis gen. nov., sp. nov. with the type strain Marseille‐P4678T.
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Affiliation(s)
- Melhem Bilen
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France.,Clinical Microbiology Department, Faculty of Medicine and Medical Sciences, University of Balamand, Amioun, Lebanon
| | | | - Thi T Nguyen
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Magali Richez
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Ziad Daoud
- Clinical Microbiology Department, Faculty of Medicine and Medical Sciences, University of Balamand, Amioun, Lebanon
| | - Pierre E Fournier
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Didier Raoult
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France.,Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Frédéric Cadoret
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
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8
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Liu J, Taylor JC, Baldwin SA. Removal of selenate from brine using anaerobic bacteria and zero valent iron. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 222:348-358. [PMID: 29870963 DOI: 10.1016/j.jenvman.2018.05.095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/25/2018] [Accepted: 05/30/2018] [Indexed: 06/08/2023]
Abstract
The mining industry needs to treat large volumes of wastewater highly concentrated in chemical compounds that can adversely affect receiving environments. One promising method of treatment is the use of reverse osmosis to remove most of the dissolved salts. However, the resulting brine reject is a highly saline wastewater that needs further treatment to remove the toxic components, such as selenate, which is a chemical compound of great concern in coal-mining regions. Biological reduction and removal of dissolved selenium from a brine solution was achieved. Microorganisms were enriched from environmental samples collected from two mines, respectively, at different geographic locations through adaptive evolution in the laboratory. Batch treatment of typical brine was tested with two different enrichments with the addition of either of two chemical forms of iron, ferrous chloride or zero valent iron. Successful selenium removal in the presence of high nitrate and sulphate concentrations was achieved with a combination of enriched microorganisms from one particular site and the addition of zero-valent iron. The composition and metabolic potential of the enriched microorganisms revealed Clostridium, Sphaerochaeta, Synergistes and Desulfosporosinus species with the metabolic potential for selenate reduction through the YgfK enzymatic process associated with selenium detoxification.
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Affiliation(s)
- Jinshu Liu
- Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, B.C., Canada
| | - Jon C Taylor
- Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, B.C., Canada
| | - Susan A Baldwin
- Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, B.C., Canada.
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9
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Doyle CJ, O'Toole PW, Cotter PD. Genomic Characterization of Sulphite Reducing Bacteria Isolated From the Dairy Production Chain. Front Microbiol 2018; 9:1507. [PMID: 30026740 PMCID: PMC6041559 DOI: 10.3389/fmicb.2018.01507] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 06/18/2018] [Indexed: 11/25/2022] Open
Abstract
Anaerobic sporeformers, specifically spoilage and pathogenic members of the genus Clostridium, are a concern for producers of dairy products, and of powdered dairy products in particular. As an alternative to testing for individual species, the traditional, and still current, approach to detecting these sporeformers, including non-spoilage/non-pathogenic species, in dairy products has involved testing for a sulphite reducing phenotype [Sulphite reducing Clostridia (SRCs)] under anaerobic conditions. This phenotype is conserved throughout the Order Clostridia. Unfortunately, however, this phenotype is exhibited by other sulphite reducing bacteria (SRBs) also, potentially leading to potential for false positives. Here, this risk was borne out through the identification of several SRBs from industry samples that were identified as Proteus mirabilis and various Bacillus/Paenibacillus sp. Genome wide comparison of a number of representative SRCs and SRBs was employed to determine phylogenetic relationships, especially among SRCs, and to characterize the genes responsible for the sulphite reducing phenotype. This screen identified two associated operons, i.e., asrABC in SRCs, and cysJI in Bacillus/Paenibacillus spp. and P. mirabilis. This screen identified spp. belonging to sensu stricto, Lachnospiraceae and Cluster XIV of the Clostridia all producing the SRC phenotype. This study highlights the inaccuracy of the industry standard SRC test but highlights the potential to generate an equivalent molecular test designed to detect the genes responsible for this phenotype in clostridia.
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Affiliation(s)
- Conor J Doyle
- Teagasc Food Research Centre, Cork, Ireland.,School of Microbiology, University College Cork, Cork, Ireland
| | - Paul W O'Toole
- School of Microbiology, University College Cork, Cork, Ireland.,APC Microbiome Ireland, Cork, Ireland
| | - Paul D Cotter
- Teagasc Food Research Centre, Cork, Ireland.,APC Microbiome Ireland, Cork, Ireland
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10
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Protein- and RNA-Enhanced Fermentation by Gut Microbiota of the Earthworm Lumbricus terrestris. Appl Environ Microbiol 2018; 84:AEM.00657-18. [PMID: 29602789 PMCID: PMC5960956 DOI: 10.1128/aem.00657-18] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 03/23/2018] [Indexed: 11/24/2022] Open
Abstract
Earthworms are a dominant macrofauna in soil ecosystems and have determinative effects on soil fertility and plant growth. These invertebrates feed on ingested material, and gizzard-linked disruption of ingested fungal and bacterial cells is conceived to provide diverse biopolymers in the anoxic alimentary canals of earthworms. Fermentation in the gut is likely important to the utilization of ingested biopolymer-derived compounds by the earthworm. This study therefore examined the fermentative responses of gut content-associated microbes of the model earthworm Lumbricus terrestris to (i) microbial cell lysate (to simulate gizzard-disrupted cells) and (ii) dominant biopolymers of such biomass, protein, and RNA. The microbial cell lysate augmented the production of H2, CO2, and diverse fatty acids (e.g., formate, acetate, propionate, succinate, and butyrate) in anoxic gut content microcosms, indicating that the cell lysate triggered diverse fermentations. Protein and RNA also augmented diverse fermentations in anoxic microcosms of gut contents, each yielding a distinct product profile (e.g., RNA yielded H2 and succinate, whereas protein did not). The combined product profile of protein and RNA treatments was similar to that of cell lysate treatments, and 16S rRNA-based analyses indicated that many taxa that responded to cell lysate were similar to taxa that responded to protein or RNA. In particular, protein stimulated Peptostreptococcaceae, Clostridiaceae, and Fusobacteriaceae, whereas RNA stimulated Aeromonadaceae. These findings demonstrate the capacity of gut-associated obligate anaerobes and facultative aerobes to catalyze biopolymer-driven fermentations and highlight the potential importance of protein and RNA as substrates linked to the overall turnover dynamics of organic carbon in the alimentary canal of the earthworm. IMPORTANCE The subsurface lifestyle of earthworms makes them an unnoticed component of the terrestrial biosphere. However, the propensity of these invertebrates to consume their home, i.e., soil and litter, has long-term impacts on soil fertility, plant growth, and the cycling of elements. The alimentary canals of earthworms can contain up to 500 ml anoxic gut content per square meter of soil, and ingested soil may contain 109 or more microbial cells per gram dry weight, considerations that illustrate that enormous numbers of soil microbes are subject to anoxia during gut passage. Feeding introduces diverse sources of biopolymers to the gut, and the gut fermentation of biopolymers could be important to the transformation of matter by the earthworm and its capacity to utilize fermentation-derived fatty acids. Thus, this study examined the capacity of microbes in earthworm gut contents to ferment protein and RNA, dominant biopolymers of cells that become disrupted during gut passage.
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Djouadi LN, Selama O, Abderrahmani A, Bouanane-Darenfed A, Abdellaziz L, Amziane M, Fardeau ML, Nateche F. Multiresistant opportunistic pathogenic bacteria isolated from polluted rivers and first detection of nontuberculous mycobacteria in the Algerian aquatic environment. JOURNAL OF WATER AND HEALTH 2017; 15:566-579. [PMID: 28771154 DOI: 10.2166/wh.2017.309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Opportunistic infections constitute a major challenge for modern medicine mainly because the involved bacteria are usually multiresistant to antibiotics. Most of these bacteria possess remarkable ability to adapt to various ecosystems, including those exposed to anthropogenic activities. This study isolated and identified 21 multiresistant opportunistic bacteria from two polluted rivers, located in Algiers. Cadmium, lead, and copper concentrations were determined for both water samples to evaluate heavy metal pollution. High prevalence of Enterobacteria and non-fermentative Gram-negative rods was found and a nontuberculous Mycobacterium (NTM) strain was isolated. To the best of our knowledge, this is the first detection of NTM in the Algerian environment. The strains were tested for their resistance against 34 antibiotics and 8 heavy metals. Multiple antibiotics and heavy metals resistance was observed in all isolates. The two most resistant strains, identified as Acinetobacter sp. and Citrobacter freundii, were submitted to plasmid curing to determine if resistance genes were plasmid or chromosome encoded. Citrobacter freundii strain P18 showed a high molecular weight plasmid which seems to code for resistance to zinc, lead, and tetracycline, at the same time. These findings strongly suggest that anthropized environments constitute a reservoir for multiresistant opportunistic bacteria and for circulating resistance genes.
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Affiliation(s)
- Lydia Neïla Djouadi
- Laboratory of Cellular and Molecular Biology, Microbiology team, Faculty of Biological Sciences, USTHB, Bab ezzouar -BP n°32, Algiers, Algeria
| | - Okba Selama
- Laboratory of Cellular and Molecular Biology, Microbiology team, Faculty of Biological Sciences, USTHB, Bab ezzouar -BP n°32, Algiers, Algeria
| | - Ahmed Abderrahmani
- Laboratory of Cellular and Molecular Biology, Microbiology team, Faculty of Biological Sciences, USTHB, Bab ezzouar -BP n°32, Algiers, Algeria
| | - Amel Bouanane-Darenfed
- Laboratory of Cellular and Molecular Biology, Microbiology team, Faculty of Biological Sciences, USTHB, Bab ezzouar -BP n°32, Algiers, Algeria
| | - Lamia Abdellaziz
- Laboratory of Cellular and Molecular Biology, Microbiology team, Faculty of Biological Sciences, USTHB, Bab ezzouar -BP n°32, Algiers, Algeria
| | - Meriam Amziane
- Laboratory of Cellular and Molecular Biology, Microbiology team, Faculty of Biological Sciences, USTHB, Bab ezzouar -BP n°32, Algiers, Algeria
| | - Marie-Laure Fardeau
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Marseille 13288 cedex 09, France E-mail:
| | - Farida Nateche
- Laboratory of Cellular and Molecular Biology, Microbiology team, Faculty of Biological Sciences, USTHB, Bab ezzouar -BP n°32, Algiers, Algeria
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12
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Amziane M, Darenfed-Bouanane A, Abderrahmani A, Selama O, Jouadi L, Cayol JL, Nateche F, Fardeau ML. Virgibacillus ainsalahensis sp. nov., a Moderately Halophilic Bacterium Isolated from Sediment of a Saline Lake in South of Algeria. Curr Microbiol 2016; 74:219-223. [PMID: 27957631 DOI: 10.1007/s00284-016-1171-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 11/25/2016] [Indexed: 11/30/2022]
Abstract
A Gram-positive, moderately halophilic, endospore-forming bacterium, designated MerVT, was isolated from a sediment sample of a saline lake located in Ain Salah, south of Algeria. The cells were rod shaped and motile. Isolate MerVT grew at salinity interval of 0.5-25% NaCl (optimum, 5-10%), pH 6.0-12.0 (optimum, 8.0), and temperature between 10 and 40 °C (optimum, 30 °C).The polar lipids comprised diphosphatidylglycerol, phosphatidylglycerol, a glycolipid, a phospholipid, and two lipids, and MK-7 is the predominant menaquinone. The predominant cellular fatty acids were anteiso C15:0 and anteiso C17:0. The DNA G+C content was 45.3 mol%. Phylogenetic analysis based on 16S rRNA gene sequence comparisons revealed that strain MerVT was most closely related to Virgibacillus halodenitrificans (gene sequence similarity of 97.0%). On the basis of phenotypic, chemotaxonomic properties, and phylogenetic analyses, strain MerVT (=DSM = 28944T) should be placed in the genus Virgibacillus as a novel species, for which the name Virgibacillus ainsalahensis is proposed.
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Affiliation(s)
- Meriam Amziane
- Microbiology Group, Laboratory of Cellular and Molecular Biology, Faculty of Biology, USTHB, BP 32, El Alia, Bab Ezzouar, Algiers, Algeria
| | - Amel Darenfed-Bouanane
- Microbiology Group, Laboratory of Cellular and Molecular Biology, Faculty of Biology, USTHB, BP 32, El Alia, Bab Ezzouar, Algiers, Algeria
| | - Ahmed Abderrahmani
- Microbiology Group, Laboratory of Cellular and Molecular Biology, Faculty of Biology, USTHB, BP 32, El Alia, Bab Ezzouar, Algiers, Algeria
| | - Okba Selama
- Microbiology Group, Laboratory of Cellular and Molecular Biology, Faculty of Biology, USTHB, BP 32, El Alia, Bab Ezzouar, Algiers, Algeria
| | - Lydia Jouadi
- Microbiology Group, Laboratory of Cellular and Molecular Biology, Faculty of Biology, USTHB, BP 32, El Alia, Bab Ezzouar, Algiers, Algeria
| | - Jean-Luc Cayol
- Aix Marseille Université, IRD, Université de Toulon, CNRS, Mediterranean Institute of Oceanography (MIO), UM 110, Case 925, 163 Avenue de Luminy, 13288, Marseille Cedex 9, France
| | - Farida Nateche
- Microbiology Group, Laboratory of Cellular and Molecular Biology, Faculty of Biology, USTHB, BP 32, El Alia, Bab Ezzouar, Algiers, Algeria
| | - Marie-Laure Fardeau
- Aix Marseille Université, IRD, Université de Toulon, CNRS, Mediterranean Institute of Oceanography (MIO), UM 110, Case 925, 163 Avenue de Luminy, 13288, Marseille Cedex 9, France.
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Luo Q, Cui H, Peng X, Fang J, Zuo Z, Deng J, Liu J, Deng Y. Dietary High Fluorine Alters Intestinal Microbiota in Broiler Chickens. Biol Trace Elem Res 2016; 173:483-91. [PMID: 26997344 DOI: 10.1007/s12011-016-0672-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 03/14/2016] [Indexed: 01/15/2023]
Abstract
This study investigated the effects of dietary high fluorine on ileal and cecal microbiota in broiler chickens. Two hundred eighty 1-day-old broiler chickens were randomly assigned to four groups and raised for 42 days. The control group was fed a corn-soybean basal diet (fluorine 22.6 mg/kg). The other three groups were fed the same basal diet, but supplemented with 400, 800, and 1200 mg/kg fluorine (high fluorine groups I, II, and III), administered in the form of sodium fluoride. The microbiota of ileal and cecal digesta was assessed with plate counts and polymerase chain reaction-based denaturing gradient gel electrophoresis (PCR-DGGE). It was found that, compared with those in the control group, the counts of Lactobacillus spp. and Bifidobacterium spp. were markedly decreased (P < 0.01 or P < 0.05), whereas the counts of Escherichia coli and Enterococcus spp. were significantly increased (P < 0.01 or P < 0.05) in the high fluorine groups II and III. PCR-DGGE analysis showed that the number of DGGE bands, similarity, and Shannon index of ileal and cecal bacteria were markedly reduced in the high fluorine groups II and III from 21 to 42 days. Sequencing analysis revealed that the composition of the intestinal microbiota was altered in the high fluorine groups. In conclusion, dietary fluorine in the range of 800-1200 mg/kg obviously altered the bacterial counts, and the diversity and composition of intestinal microbiota in broiler chickens, a finding which implies that dietary high fluorine can disrupt the natural balance and structure of the intestinal microbiota.
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Affiliation(s)
- Qin Luo
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China
| | - Hengmin Cui
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China.
| | - Xi Peng
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China
| | - Jing Fang
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China
| | - Zhicai Zuo
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China
| | - Junliang Deng
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China
| | - Juan Liu
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China
| | - Yubing Deng
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China
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Enrichment of dissimilatory Fe(III)-reducing bacteria from groundwater of the Siklós BTEX-contaminated site (Hungary). Folia Microbiol (Praha) 2016; 62:63-71. [PMID: 27680983 DOI: 10.1007/s12223-016-0473-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 09/15/2016] [Indexed: 10/20/2022]
Abstract
Dissimilatory iron-reducing bacteria are commonly found in microbial communities of aromatic hydrocarbon-contaminated subsurface environments where they often play key role in the degradation of the contaminants. The Siklós benzene, toluene, ethylbenzene, and xylene (BTEX)-contaminated area is one of the best characterized petroleum hydrocarbon-contaminated sites of Hungary. Continuous monitoring of the microbial community in the center of the contaminant plume indicated the presence of an emerging Geobacter population and a Rhodoferax phylotype highly associated with aromatic hydrocarbon-contaminated subsurface environments. The aim of the present study was to make an initial effort to enrich Rhodoferax-related and other dissimilatory iron-reducing bacteria from this environment. Accordingly, four slightly different freshwater media were used to enrich Fe(III) reducers, differing only in the form of nitrogen source (organic, inorganic nitrogen or gaseous headspace nitrogen). Although enrichment of the desired Rhodoferax phylotype was not succeeded, Geobacter-related bacteria were readily enriched. Moreover, the different nitrogen sources caused the enrichment of different Geobacter species. Investigation of the diversity of benzylsuccinate synthase gene both in the enrichments and in the initial groundwater sample indicated that the Geobacter population in the center of the contaminant plume may not play a significant role in the anaerobic degradation of toluene.
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15
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Jabari L, Gannoun H, Khelifi E, Cayol JL, Godon JJ, Hamdi M, Fardeau ML. Bacterial ecology of abattoir wastewater treated by an anaerobic digestor. Braz J Microbiol 2016; 47:73-84. [PMID: 26887229 PMCID: PMC4822766 DOI: 10.1016/j.bjm.2015.11.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 07/06/2015] [Indexed: 01/15/2023] Open
Abstract
Wastewater from an anaerobic treatment plant at a slaughterhouse was analysed to determine the bacterial biodiversity present. Molecular analysis of the anaerobic sludge obtained from the treatment plant showed significant diversity, as 27 different phyla were identified. Firmicutes, Proteobacteria, Bacteroidetes, Thermotogae, Euryarchaeota (methanogens), and msbl6 (candidate division) were the dominant phyla of the anaerobic treatment plant and represented 21.7%, 18.5%, 11.5%, 9.4%, 8.9%, and 8.8% of the total bacteria identified, respectively. The dominant bacteria isolated were Clostridium, Bacteroides, Desulfobulbus, Desulfomicrobium, Desulfovibrio and Desulfotomaculum. Our results revealed the presence of new species, genera and families of microorganisms. The most interesting strains were characterised. Three new bacteria involved in anaerobic digestion of abattoir wastewater were published.
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Affiliation(s)
- Linda Jabari
- Université de Carthage, Laboratoire d'Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie (INSAT), 2 Boulevard de la terre, B.P. 676, 1080 Tunis, Tunisia; Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MOI, UM 110, 13288 Marseille cedex 9, France
| | - Hana Gannoun
- Université de Carthage, Laboratoire d'Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie (INSAT), 2 Boulevard de la terre, B.P. 676, 1080 Tunis, Tunisia; Université Tunis El Manar, Institut Supérieur des Sciences Biologiques Appliquées de Tunis (ISSBAT) 9, avenue Zouhaïer Essafi, 1006 Tunis, Tunisia
| | - Eltaief Khelifi
- Université de Carthage, Laboratoire d'Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie (INSAT), 2 Boulevard de la terre, B.P. 676, 1080 Tunis, Tunisia
| | - Jean-Luc Cayol
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MOI, UM 110, 13288 Marseille cedex 9, France
| | - Jean-Jacques Godon
- INRA U050, Laboratoire de Biotechnologie de l'Environnement, Avenue des Étangs, F-11100 Narbonne, France
| | - Moktar Hamdi
- Université de Carthage, Laboratoire d'Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie (INSAT), 2 Boulevard de la terre, B.P. 676, 1080 Tunis, Tunisia
| | - Marie-Laure Fardeau
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MOI, UM 110, 13288 Marseille cedex 9, France.
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16
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Lanjekar VB, Marathe NP, Shouche YS, Ranade DR. Clostridium punense sp. nov., an obligate anaerobe isolated from healthy human faeces. Int J Syst Evol Microbiol 2015; 65:4749-4756. [DOI: 10.1099/ijsem.0.000644] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
An obligately anaerobic, rod-shaped (0.5–1.0 × 2.0–10.0 μm), Gram-stain-positive bacterium, occurring mainly singly or in pairs, and designated BLPYG-8T, was isolated from faeces of a healthy human volunteer aged 56 years. Cells were non-motile. Oval, terminal spores were formed that swell the cells. The strain was affiliated with the genus Clostridium sensu stricto (Clostridium rRNA cluster I) as revealed by 16S rRNA gene sequence analysis. Strain BLPYG-8T showed 97.3 to 97.4 % 16S rRNA gene sequence similarity with Clostridium sulfidigenes DSM 18982T, Clostridium subterminale DSM 6970T and Clostridium thiosulfatireducens DSM 13105T. DNA–DNA hybridization and phenotypic analysis showed that the strain was distinct from its closest relatives, C. sulfidigenes DSM 18982T, C. subterminale DSM 6970T, C. thiosulfatireducens DSM 13105T with 54.2, 53.9 and 53.3 % DNA–DNA relatedness, respectively. Strain BLPYG-8T grew in PYG broth at temperatures between 20 and 40 °C (optimum 37 °C). The strain utilized a range of amino acids as well as carbohydrates as a source of carbon and energy. Glucose fermentation resulted in the formation of volatile fatty acids mainly acetic acid, n-butyric acid and organic acids such as succinic and lactic acid. The DNA G+C content of strain BLPYG-8T was 44.1 mol%. The major fatty acids (>10 %) were C14 : 0, iso-C15 : 0, C16 : 1ω7c and C16 : 0. Phylogenetic analysis and specific phenotypic characteristics and/or DNA G+C content differentiated the strain from its closest relatives. On the basis of these data, strain BLPYG-8T represents a novel species of the genus Clostridium, for which the name Clostridium punense sp. nov. is proposed. The type strain is BLPYG-8T ( = DSM 28650T = CCUG 64195T = MCC 2737T).
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Affiliation(s)
- Vikram Bholanath Lanjekar
- Agharkar Research Institute, Maharashtra Association of Cultivation of Sciences, G.G. Agarkar Road, Pune, Maharashtra 411004, India (affiliated to Savitribai Phule Pune University, Pune, Maharashtra 411007, India)
| | | | | | - Dilip Ramchandra Ranade
- Agharkar Research Institute, Maharashtra Association of Cultivation of Sciences, G.G. Agarkar Road, Pune, Maharashtra 411004, India (affiliated to Savitribai Phule Pune University, Pune, Maharashtra 411007, India)
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Lakhal R, Pradel N, Postec A, Ollivier B, Cayol JL, Godfroy A, Fardeau ML, Galés G. Crassaminicella profunda gen. nov., sp. nov., an anaerobic marine bacterium isolated from deep-sea sediments. Int J Syst Evol Microbiol 2015; 65:3097-3102. [PMID: 26296351 DOI: 10.1099/ijsem.0.000386] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel, anaerobic, chemo-organotrophic bacterium, designated strain Ra1766H(T), was isolated from sediments of the Guaymas basin (Gulf of California, Mexico) taken from a depth of 2002 m. Cells were thin, motile, Gram-stain-positive, flexible rods forming terminal endospores. Strain Ra1766H(T) grew at temperatures of 25-45 °C (optimum 30 °C), pH 6.7-8.1 (optimum 7.5) and in a salinity of 5-60 g l(-1) NaCl (optimum 30 g l(-1)). It was an obligate heterotrophic bacterium fermenting carbohydrates (glucose and mannose) and organic acids (pyruvate and succinate). Casamino acids and amino acids (glutamate, aspartate and glycine) were also fermented. The main end products from glucose fermentation were acetate, butyrate, ethanol, H2 and CO2. Sulfate, sulfite, thiosulfate, elemental sulfur, fumarate, nitrate, nitrite and Fe(III) were not used as terminal electron acceptors. The predominant cellular fatty acids were C14 : 0, C16 : 1ω7, C16 : 1ω7 DMA and C16 : 0. The main polar lipids consisted of phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine and phospholipids. The G+C content of the genomic DNA was 33.7 mol%. Phylogenetic analysis of the 16S rRNA gene sequence indicated that strain Ra1766H(T) was affiliated to cluster XI of the order Clostridiales, phylum Firmicutes. The closest phylogenetic relative of Ra1766H(T) was Geosporobacter subterraneus (94.2% 16S rRNA gene sequence similarity). On the basis of phylogenetic inference and phenotypic properties, strain Ra1766H(T) ( = DSM 27501(T) = JCM 19377(T)) is proposed to be the type strain of a novel species of a novel genus, named Crassaminicella profunda.
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Affiliation(s)
- Raja Lakhal
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288, Marseille, cedex 09, France
| | - Nathalie Pradel
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288, Marseille, cedex 09, France
| | - Anne Postec
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288, Marseille, cedex 09, France
| | - Bernard Ollivier
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288, Marseille, cedex 09, France
| | - Jean-Luc Cayol
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288, Marseille, cedex 09, France
| | - Anne Godfroy
- Laboratoire de Microbiologie des Environnements Extrêmes, UMR 6197, Ifremer, CNRS, UBO, 29280 Plouzané, France
| | - Marie-Laure Fardeau
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288, Marseille, cedex 09, France
| | - Grégoire Galés
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288, Marseille, cedex 09, France.,Aix-Marseille Université, CEREGE, UMR 7330, Centre St Charles, Case 67, 3 Place Victor Hugo, 13331 Marseille, France
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Addou NA, Schumann P, Spröer C, Ben Hania W, Hacene H, Fauque G, Cayol JL, Fardeau ML. Melghiribacillus thermohalophilus gen. nov., sp. nov., a novel filamentous, endospore-forming, thermophilic and halophilic bacterium. Int J Syst Evol Microbiol 2015; 65:1172-1179. [DOI: 10.1099/ijs.0.000075] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel filamentous, endospore-forming, thermophilic and moderately halophilic bacterium designated strain Nari2AT was isolated from soil collected from an Algerian salt lake, Chott Melghir. The novel isolate was Gram-staining-positive, aerobic, catalase-negative and oxidase-positive. Optimum growth occurred at 50–55 °C, 7–10 % (w/v) NaCl and pH 7–8. The strain exhibited 95.4, 95.4 and 95.2 % 16S rRNA gene sequence similarity to
Thalassobacillus devorans
G19.1T,
Sediminibacillus halophilus
EN8dT and
Virgibacillus kekensis
YIM-kkny16T, respectively. The major menaquinone was MK-7. The polar lipid profile consisted of phosphatidylglycerol, diphosphatidylglycerol, three unknown phosphoglycolipids and two unknown phospholipids. The predominant cellular fatty acids were iso-C15 : 0 and iso-C17 : 0. The DNA G+C content was 41.9 mol%. Based on the phenotypic, chemotaxonomic and phylogenetic data, strain Nari2AT is considered to represent a novel species of a new genus in the family
Bacillaceae
, order
Bacillales
, for which the name Melghiribacillus thermohalophilus gen. nov., sp. nov. is proposed. The type strain of Melghiribacillus thermohalophilus is Nari2AT ( = DSM 25894T = CCUG 62543T).
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Affiliation(s)
- Nariman Ammara Addou
- Laboratoire de Biologie Cellulaire et Moléculaire (Equipe de Microbiologie), Université des Sciences et de la Technologie Houari Boumediène, BP 32, El Alia 16111 Bab Ezzouar, Algiers, Algeria
- Aix Marseille Université, IRD, Université de Toulon, CNRS, MIO UM 110, 13288 Marseille, France
| | - Peter Schumann
- Leibniz Institut DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Cathrin Spröer
- Leibniz Institut DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Wajdi Ben Hania
- Aix Marseille Université, IRD, Université de Toulon, CNRS, MIO UM 110, 13288 Marseille, France
| | - Hocine Hacene
- Laboratoire de Biologie Cellulaire et Moléculaire (Equipe de Microbiologie), Université des Sciences et de la Technologie Houari Boumediène, BP 32, El Alia 16111 Bab Ezzouar, Algiers, Algeria
| | - Guy Fauque
- Aix Marseille Université, IRD, Université de Toulon, CNRS, MIO UM 110, 13288 Marseille, France
| | - Jean-Luc Cayol
- Aix Marseille Université, IRD, Université de Toulon, CNRS, MIO UM 110, 13288 Marseille, France
| | - Marie-Laure Fardeau
- Aix Marseille Université, IRD, Université de Toulon, CNRS, MIO UM 110, 13288 Marseille, France
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Hamdi O, Ben Hania W, Postec A, Bouallagui H, Hamdi M, Bonin P, Ollivier B, Fardeau ML. Aminobacterium thunnarium sp. nov., a mesophilic, amino acid-degrading bacterium isolated from an anaerobic sludge digester, pertaining to the phylum Synergistetes. Int J Syst Evol Microbiol 2015; 65:609-614. [DOI: 10.1099/ijs.0.068965-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A new Gram-staining-positive, non-sporulating, mesophilic, amino acid-degrading anaerobic bacterium, designated strain OTA 102T, was isolated from an anaerobic sequencing batch reactor treating wastewater from cooking tuna. The cells were curved rods (0.6–2.5×0.5 µm) and occurred singly or in pairs. The strain was motile by means of one lateral flagellum. Strain OTA 102T grew at temperatures between 30 and 45 °C (optimum 40 °C), between pH 6.0 and 8.4 (optimum pH 7.2) and NaCl concentrations between 1 and 5 % (optimum 2 %, w/v). Strain OTA 102T required yeast extract for growth. Serine, threonine, glycine, cysteine, citrate, fumarate, α-ketoglutarate and pyruvate were fermented. When co-cultured with
Methanobacterium formicicum
as the hydrogen scavenger, strain OTA 102T oxidized alanine, valine, leucine, isoleucine, aspartate, tyrosine, methionine, histidine and asparagine. The genomic DNA G+C content of strain OTA 102T was 41.7 mol%. The main fatty acid was iso-C15 : 0. Phylogenetic analysis of the 16S rRNA gene sequence indicated that strain OTA 102T was related to
Aminobacterium colombiense
and
Aminobacterium mobile
(95.5 and 95.2 % similarity, respectively), of the phylum
Synergistetes
. On the basis of phylogenetic, genetic and physiological characteristics, strain OTA 102T is proposed to represent a novel species of the genus
Aminobacterium
, Aminobacterium thunnarium sp. nov. The type strain is OTA 102T ( = DSM 27500T = JCM 19320T).
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Affiliation(s)
- Olfa Hamdi
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis, Université de Carthage, Tunisia
- Aix Marseille Université, CNRS, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Wajdi Ben Hania
- Aix Marseille Université, CNRS, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Anne Postec
- Aix Marseille Université, CNRS, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Hassib Bouallagui
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis, Université de Carthage, Tunisia
| | - Moktar Hamdi
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis, Université de Carthage, Tunisia
| | - Patricia Bonin
- Aix Marseille Université, CNRS, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Bernard Ollivier
- Aix Marseille Université, CNRS, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Marie-Laure Fardeau
- Aix Marseille Université, CNRS, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
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Ruan Z, Wang Y, Zhang C, Song J, Zhai Y, Zhuang Y, Wang H, Chen X, Li Y, Zhao B, Zhao B. Clostridium huakuii sp. nov., an anaerobic, acetogenic bacterium isolated from methanogenic consortia. Int J Syst Evol Microbiol 2014; 64:4027-4032. [PMID: 25230767 DOI: 10.1099/ijs.0.062711-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-staining-positive, spore-forming, obligately anaerobic, acetogenic bacterium, designated LAM1030(T), was isolated from methanogenic consortia enriched from biogas slurry collected from the large-scale anaerobic digester of Modern Farming Corporation in Hebei Province, China. Cells of strain LAM1030(T) were motile, straight or spiral-rod-shaped. Strain LAM1030(T) could utilize glucose, fructose, maltose, galactose, lactose, sucrose, cellobiose, mannitol, pyruvate, succinic acid and tryptophan as the sole carbon source. Acetic acid, isovaleric acid and butanoic acid were the main products of glucose fermentation. Sodium sulfite was used as an electron acceptor. Growth of strain LAM1030(T) was completely inhibited by the addition of ampicillin, tetracycline, gentamicin or erythromycin at a concentration of 20 µg ml(-1). The main polar lipids of strain LAM1030(T) were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, 11 unknown glycolipids and two unknown phospholipids. No respiratory quinone was detected. The major fatty acids of strain LAM1030(T) were C16 : 0 (21.1 %), C14 : 0 (10.3 %), summed feature 9 (including C16:0 10-methyl and/or iso-C17:1 ω9c) (11.3% ), summed feature 3 (including C16:1 ω7c and/or C16:1 ω6c) (10.6% ) and iso-C15 : 0 (6.6 %). Analysis of the 16S rRNA gene sequence indicated that strain LAM1030(T) belonged to the genus Clostridium and was most closely related to Clostridium subterminale DSM 6970(T), Clostridium thiosulfatireducens DSM 13105(T) and Clostridium sulfidigenes DSM 18982(T), with 97.0, 96.9 and 96.8 % similarity, respectively. The G+C content of the genomic DNA of strain LAM1030(T) was 31.2±0.3 mol%. On the basis of its phenotypic, phylogenetic and chemotaxonomic characterization, strain LAM1030(T) is suggested to represent a novel species of the genus Clostridium, for which the name Clostridium huakuii sp. nov. is proposed. The type strain is LAM1030(T) ( = ACCC 00698(T) = JCM 19186(T)).
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Affiliation(s)
- Zhiyong Ruan
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Yanwei Wang
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Chi Zhang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jinlong Song
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yi Zhai
- Agricultural Engineering Institute, Chongqing Academy of Agricultural Sciences, Chongqing 401329, PR China
| | - Yan Zhuang
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Huimin Wang
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Xiaorong Chen
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Yanting Li
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Bingqiang Zhao
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Bin Zhao
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
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21
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Clostridium vulturis sp. nov., isolated from the intestine of the cinereous vulture (Aegypius monachus). Antonie van Leeuwenhoek 2014; 106:577-83. [DOI: 10.1007/s10482-014-0229-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 06/26/2014] [Indexed: 10/25/2022]
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22
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Xu X, Chen C, Lee DJ, Wang A, Guo W, Zhou X, Guo H, Yuan Y, Ren N, Chang JS. Sulfate-reduction, sulfide-oxidation and elemental sulfur bioreduction process: modeling and experimental validation. BIORESOURCE TECHNOLOGY 2013; 147:202-211. [PMID: 23994962 DOI: 10.1016/j.biortech.2013.07.113] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Revised: 07/21/2013] [Accepted: 07/24/2013] [Indexed: 06/02/2023]
Abstract
This study describes the sulfate-reducing (SR) and sulfide-oxidizing (SO) process using Monod-type model with best-fit model parameters both being reported and estimated. The molar ratio of oxygen to sulfide (ROS) significantly affects the kinetics of the SR+SO process. The S(0) is produced by SO step but is later consumed by sulfur-reducing bacteria to lead to "rebound" in sulfide concentration. The model correlated well all experimental data in the present SR+SO tests and the validity of this approach was confirmed by independent sulfur bioreduction tests in four denitrifying sulfide removal (DSR) systems. Modeling results confirm that the ratio of oxygen to sulfide is a key factor for controlling S(0) formation and its bioreduction. Overlooking S(0) bioreduction step would overestimate the yield of S(0).
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Affiliation(s)
- Xijun Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chuan Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Duu-Jong Lee
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| | - Aijie Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Wanqian Guo
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xu Zhou
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Hongliang Guo
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Ye Yuan
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Jo-Shu Chang
- Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan, Taiwan
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Bouanane-Darenfed A, Ben Hania W, Hacene H, Cayol JL, Ollivier B, Fardeau ML. Caldicoprobacter guelmensis sp. nov., a thermophilic, anaerobic, xylanolytic bacterium isolated from a hot spring. Int J Syst Evol Microbiol 2013; 63:2049-2053. [DOI: 10.1099/ijs.0.043497-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A hyperthermophilic anaerobic bacterium, designated D2C22T, was isolated from the hydrothermal hot spring of Guelma in north-east Algeria. The isolate was a Gram-stain-positive, non-sporulating, non-motile rod, appearing singly or in pairs (0.3–0.4×8.0–9.0 µm). Strain D2C22T grew anaerobically at 45–85 °C (optimum 65 °C), at pH 5–9 (optimum pH 6.8) and with 0–20 g NaCl l−1. Strain D2C22T used glucose, galactose, lactose, fructose, ribose, xylose, arabinose, maltose, cellobiose, mannose, melibiose, sucrose, xylan and pyruvate (only in the presence of yeast extract or biotrypticase) as electron donors. The end products from glucose fermentation were acetate, lactate, CO2 and H2. Nitrate, nitrite, thiosulfate, elemental sulfur, sulfate and sulfite were not used as electron acceptors. The predominant cellular fatty acids were iso-C15 : 0 and iso-C17 : 0. The DNA G+C content was 41.6 mol%. Phylogenetic analysis of the 16S rRNA gene sequence indicated that strain D2C22T was most closely related to
Caldicoprobacter oshimai
JW/HY-331T,
Caldicoprobacter algeriensis
TH7C1T and
Acetomicrobium faecale
DSM 20678T (95.5, 95.5 and 95.3 % 16S rRNA gene sequence similarity, respectively). Based on phenotypic, phylogenetic and chemotaxonomic characteristics, strain D2C22T is proposed to be a representative of a novel species of the genus
Caldicoprobacter
within the order
Clostridiales
, for which the name Caldicoprobacter guelmensis sp. nov. is proposed. The type strain is D2C22T ( = DSM 24605T = JCM 17646T).
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Affiliation(s)
- Amel Bouanane-Darenfed
- Laboratoire de Biologie Cellulaire et Moléculaire (Equipe de Microbiologie) Faculté de Biologie-Université des Sciences et de la Technologie Houari Boumediene, Bab ezzouar Alger Algérie 16111
| | - Wajdi Ben Hania
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisie
- Laboratoire de Microbiologie IRD, MIO, UMR 235, Aix Marseille Université, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Hocine Hacene
- Laboratoire de Biologie Cellulaire et Moléculaire (Equipe de Microbiologie) Faculté de Biologie-Université des Sciences et de la Technologie Houari Boumediene, Bab ezzouar Alger Algérie 16111
| | - Jean-Luc Cayol
- Laboratoire de Microbiologie IRD, MIO, UMR 235, Aix Marseille Université, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Bernard Ollivier
- Laboratoire de Microbiologie IRD, MIO, UMR 235, Aix Marseille Université, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Marie-Laure Fardeau
- Laboratoire de Microbiologie IRD, MIO, UMR 235, Aix Marseille Université, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
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Halanaerobium sehlinense sp. nov., an extremely halophilic, fermentative, strictly anaerobic bacterium from sediments of the hypersaline lake Sehline Sebkha. Int J Syst Evol Microbiol 2013; 63:2069-2074. [DOI: 10.1099/ijs.0.040139-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A strictly anaerobic, extremely halophilic, Gram-positive, rod-shaped bacterium was isolated from the hypersaline (>20 % NaCl) surface sediments of Sehline Sebkha in Tunisia. The strain, designated 1SehelT, was strictly halophilic and proliferated at NaCl concentrations of between 5 % and 30 % (saturation), with optimal growth at 20 % NaCl. Strain 1SehelT was non-spore-forming, non-motile, appearing singly or in pairs, or occasionally as long chains and measured 0.5–0.8 µm by 3–10 µm. Strain 1SehelT grew optimally at pH values of 7.4 but had a very broad pH range for growth (pH 5.2–9.4). It grew at temperatures between 20 and 50 °C with an optimum at 43 °C. Strain 1SehelT required yeast extract for growth. The isolate fermented glucose, galactose, fructose, glycerol, mannose, maltose, ribose, pyruvate and sucrose. The fermentation products from glucose utilization were lactate, acetate, formate, ethanol, CO2 and H2. The G+C ratio of the DNA was 32.7 mol%. The major fatty acids were C15 : 1ω6c/7c, C16 : 1ω7c, C16 : 0 and C15 : 0. On the basis of phylogenetic and physiological properties, strain 1SehelT ( = DSM 25582T = JCM 18213T) is proposed as the type strain of Halanaerobium sehlinense sp. nov., within the family
Halanaerobiaceae
.
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25
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Jabari L, Gannoun H, Cayol JL, Hamdi M, Ollivier B, Fauque G, Fardeau ML. Desulfotomaculum peckii sp. nov., a moderately thermophilic member of the genus
Desulfotomaculum
, isolated from an upflow anaerobic filter treating abattoir wastewaters. Int J Syst Evol Microbiol 2013; 63:2082-2087. [DOI: 10.1099/ijs.0.043893-0] [Citation(s) in RCA: 21] [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 novel anaerobic thermophilic sulfate-reducing bacterium designated strain LINDBHT1T was isolated from an anaerobic digester treating abattoir wastewaters in Tunisia. Strain LINDBHT1T grew at temperatures between 50 and 65 °C (optimum 55–60 °C), and at pH between 5.9 and 9.2 (optimum pH 6.0–6.8). Strain LINDBHT1T required salt for growth (1–40 g NaCl l−1), with an optimum of 20–30 g l−1. In the presence of sulfate as terminal electron acceptor, strain LINDBHT1T used H2/CO2, propanol, butanol and ethanol as carbon and energy sources but fumarate, formate, lactate and pyruvate were not utilized. Butanol was converted to butyrate, while propanol and ethanol were oxidized to propionate and acetate, respectively. Sulfate, sulfite and thiosulfate were utilized as terminal electron acceptors but elemental sulfur, iron (III), fumarate, nitrate and nitrite were not used. The G+C content of the genomic DNA was 44.4 mol%. Phylogenetic analysis of the small-subunit rRNA gene sequence indicated that strain LINDBHT1T was affiliated to the genus
Desulfotomaculum
with the type strains of
Desulfotomaculum halophilum
and
Desulfotomaculum alkaliphilum
as its closest phylogenetic relatives (about 89 % similarity). This strain represents a novel species of the genus
Desulfotomaculum
, Desulfotomaculum peckii sp. nov.; the type strain is LINDBHT1T ( = DSM 23769T = JCM 17209T).
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Affiliation(s)
- Linda Jabari
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
- Laboratoire de Microbiologie, Institut de Recherche pour le Développement (IRD), Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, case 925, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
| | - Hana Gannoun
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
| | - Jean-Luc Cayol
- Laboratoire de Microbiologie, Institut de Recherche pour le Développement (IRD), Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, case 925, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
| | - Moktar Hamdi
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
| | - Bernard Ollivier
- Laboratoire de Microbiologie, Institut de Recherche pour le Développement (IRD), Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, case 925, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
| | - Guy Fauque
- Laboratoire de Microbiologie, Institut de Recherche pour le Développement (IRD), Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, case 925, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
| | - Marie-Laure Fardeau
- Laboratoire de Microbiologie, Institut de Recherche pour le Développement (IRD), Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, case 925, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
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26
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Addou AN, Schumann P, Spröer C, Bouanane-Darenfed A, Amarouche-Yala S, Hacene H, Cayol JL, Fardeau ML. Melghirimyces thermohalophilus sp. nov., a thermoactinomycete isolated from an Algerian salt lake. Int J Syst Evol Microbiol 2013; 63:1717-1722. [DOI: 10.1099/ijs.0.043760-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel filamentous bacterium, designated Nari11AT, was isolated from soil collected from a salt lake named Chott Melghir, located in north-eastern Algeria. The strain is an aerobic, halophilic, thermotolerant, Gram-stain-positive bacterium, growing at NaCl concentrations between 5 and 20 % (w/v) and at 43–60 °C and pH 5.0–10.0. The major fatty acids were iso-C15 : 0, anteiso-C15 : 0 and iso-C17 : 0. The DNA G+C content was 53.4 mol%. ll-Diaminopimelic acid was the diamino acid of the peptidoglycan. The major menaquinone was MK-7, but MK-6 and MK-8 were also present in trace amounts. The polar lipid profile consisted of phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylmonomethylethanolamine and three unidentified phospholipids. Results of molecular and phenotypic analyses led to the description of the strain as a novel member to the genus
Melghirimyces
, family
Thermoactinomycetaceae
. Strain Nari11AT shows 96.7 % 16S rRNA gene sequence similarity to the type strain of
Melghirimyces algeriensis
. On the basis of phenotypic, physiological and phylogenetic data, strain Nari11AT ( = DSM 45514T = CCUG 60050T) represents the type strain of a novel species, for which the name Melghirimyces thermohalophilus sp. nov. is proposed.
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Affiliation(s)
- Ammara Nariman Addou
- Laboratoire de Biologie Cellulaire et Moléculaire (équipe de Microbiologie), Université des sciences et de la technologie, Houari Boumédiènne, Bab Ezzouar, Algiers, Algeria
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288 Marseille Cedex 09, France
| | - Peter Schumann
- Leibniz Institut DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Cathrin Spröer
- Leibniz Institut DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Amel Bouanane-Darenfed
- Laboratoire de Biologie Cellulaire et Moléculaire (équipe de Microbiologie), Université des sciences et de la technologie, Houari Boumédiènne, Bab Ezzouar, Algiers, Algeria
| | | | - Hocine Hacene
- Laboratoire de Biologie Cellulaire et Moléculaire (équipe de Microbiologie), Université des sciences et de la technologie, Houari Boumédiènne, Bab Ezzouar, Algiers, Algeria
| | - Jean-Luc Cayol
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288 Marseille Cedex 09, France
| | - Marie-Laure Fardeau
- Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, 13288 Marseille Cedex 09, France
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27
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Genome sequence of Clostridium tunisiense TJ, isolated from drain sediment from a pesticide factory. J Bacteriol 2013; 194:6950-1. [PMID: 23209212 DOI: 10.1128/jb.01873-12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Clostridium tunisiense is a Gram-positive, obligate anaerobe that was first isolated in an anaerobic environment under eutrophication. Here we report the first genome sequence of the Clostridium tunisiense TJ isolated from drain sediment of a pesticide factory in Tianjin, China. The genome is of great importance for both basic and application research.
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28
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Lakhal R, Pradel N, Postec A, Hamdi M, Ollivier B, Godfroy A, Fardeau ML. Vallitalea guaymasensis gen. nov., sp. nov., isolated from marine sediment. Int J Syst Evol Microbiol 2013; 63:3019-3023. [PMID: 23396717 DOI: 10.1099/ijs.0.045708-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel obligately anaerobic, non-spore-forming, rod-shaped mesophilic, halophilic, Gram-stain-negative bacterium, was isolated from sediments of Guaymas Basin. The strain, designated Ra1766G1(T), grew at 20-40 °C (optimum, 30-35 °C) and at pH 6.0-8.0 (optimum, pH 6.5-7.5). It required 0.5-7.5 % NaCl (optimum, 2-3 %) for growth. Sulfate, thiosulfate, elemental sulfur, sulfite, fumarate, nitrate and nitrite were not used as terminal electron acceptors. Strain Ra1766G1(T) used cellobiose, glucose, mannose, maltose, arabinose, raffinose, galactose, ribose, sucrose, pyruvate and xylose as electron donors. The main fermentation product from glucose metabolism was acetate. The predominant cellular fatty acids were anteiso-C15 : 0, iso-C15 : 0, anteiso DMA-C15 : 0 and C16 : 0. The main polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, iso-DMA-C15 : 0 glycolipids and phospholipids. The G+C content of the genomic DNA was 31.2 mol%. The closest phylogenetic relatives of strain Ra1766G1(T) were Natranaerovirga pectinivora AP3(T) (92.4 % 16S rRNA gene sequence similarity), Natranaerovirga hydrolytica APP2(T)(90.2 %) and Defluviitalea saccharophila 6LT2(T) (88.9 %). On the basis of phylogenetic inference and phenotypic properties, strain Ra1766G1(T) represents a novel species of a new genus for which the name Vallitalea guaymasensis is proposed. The type strain of the type species is Ra1766G1(T) ( = DSM 24848(T) = JCM17997(T)).
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Affiliation(s)
- Raja Lakhal
- Laboratoire d'Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia.,Laboratoire de Microbiologie, IRD, Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Nathalie Pradel
- Laboratoire de Microbiologie, IRD, Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Anne Postec
- Laboratoire de Microbiologie, IRD, Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Moktar Hamdi
- Laboratoire d'Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
| | - Bernard Ollivier
- Laboratoire de Microbiologie, IRD, Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Anne Godfroy
- Laboratoire de Microbiologie des Environnements Extrêmes, UMR 6197, IFREMER, 29280 Plouzané, France
| | - Marie-Laure Fardeau
- Laboratoire de Microbiologie, IRD, Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
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29
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Amziane M, Metiaz F, Darenfed-Bouanane A, Djenane Z, Selama O, Abderrahmani A, Cayol JL, Fardeau ML. Virgibacillus natechei sp. nov., a moderately halophilic bacterium isolated from sediment of a saline lake in southwest of Algeria. Curr Microbiol 2013; 66:462-6. [PMID: 23306353 DOI: 10.1007/s00284-012-0300-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Accepted: 12/23/2012] [Indexed: 10/27/2022]
Abstract
A novel, Gram-positive, moderately halophilic bacterium, oxidase- and catalase-positive designated FarD(T) was isolated from sediments of a saline lake located in Taghit, 93 km from Bechar, southwest of Algeria. Cells were rod-shaped, endospore forming, and motile. Growth occurred at 15-40 °C (optimum, 35 °C), pH 6.0-12.0 (optimum, 7.0) and in the presence of 1-20 % NaCl (optimum, 10 %). Strain FarD(T) used glucose, mannitol, melibiose, D-mannose, and 5 ketogluconate. The polar lipids comprised diphosphatidylglycerol, phosphatidylglycerol, and three phospholipids; MK-7 is the predominant menaquinone. The predominant cellular fatty acids were anteiso C15:0, anteiso C17:0, C20:0, and anteiso C19:0. The DNA G+C content was 42.1 mol%. Phylogenetic analysis of the small-subunit ribosomal RNA gene sequence indicated that strain FarD(T) had as its closest relative Virgibacillus salinus (similarity of 96.3 %). Based on phenotypic, phylogenetic, and taxonomic characteristics, strain FarD(T) is proposed as a novel species of the genus Virgibacillus within the order Clostridiales, for which the name V. natechei is proposed. The type strain is FarD(T) (=DSM 25609(T) = CCUG 62224(T)).
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Affiliation(s)
- Meriam Amziane
- Microbiology Group, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, USTHB, BP 32, EL ALIA, Bab Ezzouar, Algiers, Algeria
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30
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Jabari L, Gannoun H, Cayol JL, Hedi A, Sakamoto M, Falsen E, Ohkuma M, Hamdi M, Fauque G, Ollivier B, Fardeau ML. Macellibacteroides fermentans gen. nov., sp. nov., a member of the family
Porphyromonadaceae
isolated from an upflow anaerobic filter treating abattoir wastewaters. Int J Syst Evol Microbiol 2012; 62:2522-2527. [DOI: 10.1099/ijs.0.032508-0] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
A novel obligately anaerobic, non-spore-forming, rod-shaped mesophilic bacterium, which stained Gram-positive but showed the typical cell wall structure of Gram-negative bacteria, was isolated from an upflow anaerobic filter treating abattoir wastewaters in Tunisia. The strain, designated LIND7HT, grew at 20–45 °C (optimum 35–40 °C) and at pH 5.0–8.5 (optimum pH 6.5–7.5). It did not require NaCl for growth, but was able to grow in the presence of up to 2 % NaCl. Sulfate, thiosulfate, elemental sulfur, sulfite, nitrate and nitrite were not used as terminal electron acceptors. Strain LIND7HT used cellobiose, glucose, lactose, mannose, maltose, peptone, rhamnose, raffinose, sucrose and xylose as electron donors. The main fermentation products from glucose metabolism were lactate, acetate, butyrate and isobutyrate. The predominant cellular fatty acids were anteiso-C15 : 0, C15 : 0, C17 : 0 2-OH and a summed feature consisting of C18 : 2ω6,9c and/or anteiso-C18 : 0, and the major menaquinones were MK-9, MK-9(H2) and MK-10. The G+C content of the genomic DNA was 41.4 mol%. Although the closest phylogenetic relatives of strain LIND7HT were
Parabacteroides merdae
,
Parabacteroides goldsteinii
and
Parabacteroides gordonii
, analysis of the hsp60 gene sequence showed that strain LIND7HT was not a member of the genus
Parabacteroides
. On the basis of phylogenetic inference and phenotypic properties, strain LIND7HT ( = CCUG 60892T = DSM 23697T = JCM 16313T) is proposed as the type strain of a novel species in a new genus within the family
Porphyromonadaceae
, Macellibacteroides fermentans gen. nov., sp. nov.
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Affiliation(s)
- Linda Jabari
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
- Aix-Marseille Universit� du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Hana Gannoun
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
| | - Jean-Luc Cayol
- Aix-Marseille Universit� du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Abdeljabbar Hedi
- Aix-Marseille Universit� du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Mitsuo Sakamoto
- Microbe Division/Japan Collection of Microorganisms, RIKEN BioResource Center 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Enevold Falsen
- CCUG, Culture Collection, Department of Clinical Bacteriology, University of Göteborg, 41346 Göteborg, Sweden
| | - Moriya Ohkuma
- Microbe Division/Japan Collection of Microorganisms, RIKEN BioResource Center 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Moktar Hamdi
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
| | - Guy Fauque
- Aix-Marseille Universit� du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Bernard Ollivier
- Aix-Marseille Universit� du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Marie-Laure Fardeau
- Aix-Marseille Universit� du Sud Toulon-Var, CNRS/INSU, IRD, MIO, UM 110, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
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31
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Addou AN, Schumann P, Spröer C, Hacene H, Cayol JL, Fardeau ML. Melghirimyces algeriensis gen. nov., sp. nov., a member of the family
Thermoactinomycetaceae
, isolated from a salt lake. Int J Syst Evol Microbiol 2012; 62:1491-1498. [DOI: 10.1099/ijs.0.028985-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel filamentous bacterium, designated NariEXT, was isolated from soil collected from Chott Melghir salt lake, which is located in the south-east of Algeria. The strain was an aerobic, halotolerant, thermotolerant, Gram-positive bacterium that was able to grow in NaCl concentrations up to 21 % (w/v), at 37–60 °C and at pH 5.0–9.5. The major fatty acids were iso- and anteiso-C15 : 0. The DNA G+C content was 47.3 mol%. The major menaquinone was MK-7, but MK-6 and MK-8 were also present. The polar lipid profile consisted of phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylmonomethylethanolamine (methyl-PE). Results of molecular and phenotypic analysis led to the description of the strain as a new member of the family
Thermoactinomycetaceae
. The isolate was distinct from members of recognized genera of this family by morphological, biochemical and chemotaxonomic characteristics. Strain NariEXT showed 16S rRNA gene sequence similarities of 95.38 and 94.28 % with the type strains of
Desmospora activa
and
Kroppenstedtia eburnea
, respectively, but differed from both type strains in its sugars, polar lipids and in the presence of methyl-PE. On the basis of physiological and phylogenetic data, strain NariEXT represents a novel species of a new genus of the family
Thermoactinomycetaceae
for which the name Melghirimyces algeriensis gen. nov., sp. nov. is proposed. The type strain of Melghirimyces algeriensis, the type species of the genus, is NariEXT ( = DSM 45474T = CCUG 59620T).
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Affiliation(s)
- Ammara Nariman Addou
- Laboratoire de Biologie Cellulaire et Moléculaire (équipe de Microbiologie), Université des Sciences et de la Technologie, Houari Boumédiènne, Bab Ezzouar, Algiers, Algeria
- Laboratoire de Microbiologie MIO-IRD, UMR 235, Aix-Marseille Université, case 925, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
| | - Peter Schumann
- Leibniz-Institut DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Cathrin Spröer
- Leibniz-Institut DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Hocine Hacene
- Laboratoire de Biologie Cellulaire et Moléculaire (équipe de Microbiologie), Université des Sciences et de la Technologie, Houari Boumédiènne, Bab Ezzouar, Algiers, Algeria
| | - Jean-Luc Cayol
- Laboratoire de Microbiologie MIO-IRD, UMR 235, Aix-Marseille Université, case 925, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
| | - Marie-Laure Fardeau
- Laboratoire de Microbiologie MIO-IRD, UMR 235, Aix-Marseille Université, case 925, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
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32
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Jabari L, Gannoun H, Cayol JL, Hamdi M, Fauque G, Ollivier B, Fardeau ML. Characterization of Defluviitalea saccharophila gen. nov., sp. nov., a thermophilic bacterium isolated from an upflow anaerobic filter treating abattoir wastewaters, and proposal of Defluviitaleaceae fam. nov. Int J Syst Evol Microbiol 2012; 62:550-555. [DOI: 10.1099/ijs.0.030700-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel thermophilic, anaerobic, Gram-stain-positive, terminal-spore-forming bacterium was isolated from an upflow anaerobic filter treating abattoir wastewaters in Tunisia. This strain, designated LIND6LT2T, grew at 40–60 °C (optimum 50–55 °C) and at pH 6.0–8.5 (optimum pH 7.0–7.5). It did not require NaCl for growth, but tolerated it up to 2 %. Sulfate, thiosulfate, elemental sulfur, sulfite, nitrate and nitrite were not used as electron acceptors. Growth of LIND6LT2T was inhibited by sulfite (2 mM). Strain LIND6LT2T used cellobiose, glucose, mannose, maltose, mannitol, sucrose and xylose as electron donors. The main fermentation products from glucose metabolism were acetate, formate, butyrate and isobutyrate. The predominant cellular fatty acids were C16 : 0 (68.4 %) and C14 : 0 (8.3 %). The G+C content of the genomic DNA was 35.2 mol%. On the basis of its phylogenetic and physiological properties, a new genus and species, Defluviitalea saccharophila gen. nov., sp. nov., are proposed to accommodate strain LIND6LT2T, placed in Defluviitaleaceae fam. nov. within the phylum Firmicutes, class Clostridia, order Clostridiales. Strain LIND6LT2T ( = DSM 22681T = JCM 16312T) is the type strain of Defluviitalea saccharophila, which itself is the type species of Defluviitalea.
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Affiliation(s)
- Linda Jabari
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
- Université d'Aix-Marseille, Mediterranean Institute of Oceanography (MIO), IRD, MIOUMR 235, CNRS/INSU MIOUMR 7294, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Hana Gannoun
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
- Université d'Aix-Marseille, Mediterranean Institute of Oceanography (MIO), IRD, MIOUMR 235, CNRS/INSU MIOUMR 7294, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Jean-Luc Cayol
- Université d'Aix-Marseille, Mediterranean Institute of Oceanography (MIO), IRD, MIOUMR 235, CNRS/INSU MIOUMR 7294, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Moktar Hamdi
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, BP 676, 1080 Tunis Cedex, Tunisia
| | - Guy Fauque
- Université d'Aix-Marseille, Mediterranean Institute of Oceanography (MIO), IRD, MIOUMR 235, CNRS/INSU MIOUMR 7294, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Bernard Ollivier
- Université d'Aix-Marseille, Mediterranean Institute of Oceanography (MIO), IRD, MIOUMR 235, CNRS/INSU MIOUMR 7294, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Marie-Laure Fardeau
- Université d'Aix-Marseille, Mediterranean Institute of Oceanography (MIO), IRD, MIOUMR 235, CNRS/INSU MIOUMR 7294, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
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33
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Renault D, Vallance J, Déniel F, Wery N, Godon JJ, Barbier G, Rey P. Diversity of bacterial communities that colonize the filter units used for controlling plant pathogens in soilless cultures. MICROBIAL ECOLOGY 2012; 63:170-187. [PMID: 22015683 DOI: 10.1007/s00248-011-9961-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Accepted: 09/29/2011] [Indexed: 05/31/2023]
Abstract
In recent years, increasing the level of suppressiveness by the addition of antagonistic bacteria in slow filters has become a promising strategy to control plant pathogens in the recycled solutions used in soilless cultures. However, knowledge about the microflora that colonize the filtering columns is still limited. In order to get information on this issue, the present study was carried out over a 4-year period and includes filters inoculated or not with suppressive bacteria at the start of the filtering process (two or three filters were used each year). After 9 months of filtration, polymerase chain reaction (PCR)-single strand conformation polymorphism analyses point out that, for the same year of experiment, the bacterial communities from control filters were relatively similar but that they were significantly different between the bacteria-amended and control filters. To characterize the changes in bacterial communities within the filters, this microflora was studied by quantitative PCR, community-level physiological profiles, and sequencing 16SrRNA clone libraries (filters used in year 1). Quantitative PCR evidenced a denser bacterial colonization of the P-filter (amended with Pseudomonas putida strains) than control and B-filter (amended with Bacillus cereus strains). Functional analysis focused on the cultivable bacterial communities pointed out that bacteria from the control filter metabolized more carbohydrates than those from the amended filters whose trophic behaviors were more targeted towards carboxylic acids and amino acids. The bacterial communities in P- and B-filters both exhibited significantly more phylotype diversity and markedly distinct phylogenetic compositions than those in the C-filter. Although there were far fewer Proteobacteria in B- and P-filters than in the C-filter (22% and 22% rather than 69% of sequences, respectively), the percentages of Firmicutes was much higher (44% and 55% against 9%, respectively). Many Pseudomonas species were also found in the bacterial communities of the control filter. The persistence of the amended suppressive-bacteria in the filters is discussed with regards to the management of suppressive microflora in soilless culture.
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Affiliation(s)
- David Renault
- Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, ESMISAB, Université Européenne de Bretagne/Université de Brest, 29280, Plouzané, France
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34
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Bouanane-Darenfed A, Fardeau ML, Grégoire P, Joseph M, Kebbouche-Gana S, Benayad T, Hacene H, Cayol JL, Ollivier B. Caldicoprobacter algeriensis sp. nov. a new thermophilic anaerobic, xylanolytic bacterium isolated from an Algerian hot spring. Curr Microbiol 2010; 62:826-32. [PMID: 20981546 DOI: 10.1007/s00284-010-9789-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Accepted: 10/08/2010] [Indexed: 11/30/2022]
Abstract
A thermophilic anaerobic bacterium (strain TH7C1(T)) was isolated from the hydrothermal hot spring of Guelma in the northeast of Algeria. Strain TH7C1(T) stained Gram-positive, was a non-motile rod appearing singly, in pairs, or as long chains (0.7-1 × 2-6 μm(2)). Spores were never observed. It grew at temperatures between 55 and 75°C (optimum 65°C) and at pH between 6.2 and 8.3 (optimum 6.9). It did not require NaCl for growth, but tolerated it up to 5 g l(-1). Strain TH7C1(T) is an obligatory heterotroph fermenting sugars including glucose, galactose, lactose, raffinose, fructose, ribose, xylose, arabinose, maltose, mannitol, cellobiose, mannose, melibiose, saccharose, but also xylan, and pyruvate. Fermentation of sugars only occurred in the presence of yeast extract (0.1%). The end-products from glucose fermentation were acetate, lactate, ethanol, CO(2), and H(2). Nitrate, nitrite, thiosulfate, elemental sulfur, sulfate, and sulfite were not used as electron acceptors. The G+C content of the genomic DNA was 44.7 mol% (HPLC techniques). Phylogenetic analysis of the small-subunit ribosomal RNA (rRNA) gene sequence indicated that strain TH7C1(T) was affiliated to Firmicutes, order Clostridiales, family Caldicoprobacteraceae, with Caldicoprobacter oshimai (98.5%) being its closest relative. Based on phenotypic, phylogenetic, and genetic characteristics, strain TH7C1(T) is proposed as a novel species of genus Caldicoprobacter, Caldicoprobacter algeriensis, sp. nov. (strain TH7C1(T) = DSM 22661(T) = JCM 16184(T)).
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Affiliation(s)
- Amel Bouanane-Darenfed
- Laboratoire de Biologie Cellulaire et Moléculaire (équipe de Microbiologie), Université des sciences et de la technologie Houari Boumédiènne, Bab Ezzouar, Algiers, Algeria
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35
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Díaz C, Baena S, Patel BKC, Fardeau ML. Peptidolytic Microbial Community of Methanogenic Reactors from two Modified Uasbs of Brewery Industries. Braz J Microbiol 2010; 41:707-17. [PMID: 24031547 PMCID: PMC3768664 DOI: 10.1590/s1517-83822010000300022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Accepted: 04/26/2010] [Indexed: 11/22/2022] Open
Abstract
We studied the peptide-degrading anaerobic communities of methanogenic reactors from two mesophilic full-scale modified upflow anaerobic sludge blanket (UASB) reactors treating brewery wastewater in Colombia. Most probable number (MPN) counts varied between 7.1 x 10(8) and 6.6 × 10(9) bacteria/g volatile suspended solids VSS (Methanogenic Reactor 1) and 7.2 × 10(6) and 6.4 × 10(7) bacteria/g (VSS) (Methanogenic Reactor 2). Metabolites detected in the highest positive MPN dilutions in both reactors were mostly acetate, propionate, isovalerate and, in some cases, negligible concentrations of butyrate. Using the highest positive dilutions of MPN counts, 50 dominant strains were isolated from both reactors, and 12 strains were selected for sequencing their 16S rRNA gene based on their phenotypic characteristics. The small-subunit rRNA gene sequences indicated that these strains were affiliated to the families Propionibacteriaceae, Clostridiaceae and Syntrophomonadaceae in the low G + C gram-positive group and Desulfovibrio spp. in the class δ-Proteobacteria. The main metabolites detected in the highest positive dilutions of MPN and the presence of Syntrophomonadaceae indicate the effect of the syntrophic associations on the bioconversion of these substrates in methanogenic reactors. Additionally, the potential utilization of external electron acceptors for the complete degradation of amino acids by Clostridium strains confirms the relevance of these acceptors in the transformation of peptides and amino acids in these systems.
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Affiliation(s)
- C Díaz
- Unidad de Saneamiento y Biotecnología Ambiental (USBA), Departamento de Biología , Pontificia Universidad Javeriana, P.O.B. 56710, Bogotá , Colombia
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36
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Khelifi E, Bouallagui H, Fardeau ML, Touhami Y, Godon JJ, Cayol JL, Ollivier B, Hamdi M. Fermentative and sulphate-reducing bacteria associated with treatment of an industrial dye effluent in an up-flow anaerobic fixed bed bioreactor. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2009.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Sallam A, Steinbuchel A. Clostridium sulfidigenes sp. nov., a mesophilic, proteolytic, thiosulfate- and sulfur-reducing bacterium isolated from pond sediment. Int J Syst Evol Microbiol 2009; 59:1661-5. [DOI: 10.1099/ijs.0.004986-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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38
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Chamkh F, Sproer C, Lemos PC, Besson S, El Asli AG, Bennisse R, Labat M, Reis M, Qatibi AI. Desulfovibrio marrakechensis sp. nov., a 1,4-tyrosol-oxidizing, sulfate-reducing bacterium isolated from olive mill wastewater. Int J Syst Evol Microbiol 2009; 59:936-42. [DOI: 10.1099/ijs.0.003822-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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39
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Crapart S, Fardeau ML, Cayol JL, Thomas P, Sery C, Ollivier B, Combet-Blanc Y. Exiguobacterium profundum sp. nov., a moderately thermophilic, lactic acid-producing bacterium isolated from a deep-sea hydrothermal vent. Int J Syst Evol Microbiol 2007; 57:287-292. [PMID: 17267965 DOI: 10.1099/ijs.0.64639-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A facultatively anaerobic, halotolerant, moderately thermophilic and non-sporulating bacterium, designated strain 10C(T), was isolated from deep-sea hydrothermal vent samples collected on the 13 degrees N East Pacific Rise at a depth of approximately 2600 m. Cells of strain 10C(T) were Gram-positive, motile rods, and grew optimally at 45 degrees C (range 12-49 degrees C), pH 7.0 (range pH 5.5-9.5) and 0-2 % NaCl (range 0-11 %). (+)-L-Lactate was the main organic acid detected from carbohydrate fermentation with traces of formate, acetate and ethanol. Strain 10C(T) was catalase-positive, oxidase-negative and reduced nitrate to nitrite under anaerobic conditions. The DNA G+C content was 50.4 mol%. Its closest phylogenetic relatives were Exiguobacterium aestuarii TF-16(T) and Exiguobacterium marinum TF-80(T) (16S rRNA gene sequence similarity >99 %). However, strain 10C(T) differed genotypically from these two Exiguobacterium species as indicated by DNA-DNA relatedness data. Therefore, on the basis of phenotypic, genotypic and phylogenetic characteristics, strain 10C(T) is considered to represent a novel species of the genus Exiguobacterium, for which the name Exiguobacterium profundum sp. nov. is proposed. The type strain is 10C(T) (=CCUG 50949(T)=DSM 17289(T)).
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Affiliation(s)
- Sylvaine Crapart
- IRD, UMR180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Marie-Laure Fardeau
- IRD, UMR180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Jean-Luc Cayol
- IRD, UMR180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Pierre Thomas
- IRD, UMR180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Christian Sery
- IRD, UMR180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Bernard Ollivier
- IRD, UMR180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
| | - Yannick Combet-Blanc
- IRD, UMR180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 9, France
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40
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Miranda-Tello E, Fardeau ML, Joulian C, Magot M, Thomas P, Tholozan JL, Ollivier B. Petrotoga halophila sp. nov., a thermophilic, moderately halophilic, fermentative bacterium isolated from an offshore oil well in Congo. Int J Syst Evol Microbiol 2007; 57:40-44. [PMID: 17220438 DOI: 10.1099/ijs.0.64516-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel thermophilic, moderately halophilic, rod-shaped bacterium, strain MET-B(T), with a sheath-like outer structure (toga) was isolated from an offshore oil-producing well in Congo, West Africa. Strain MET-B(T) was a Gram-negative bacterium with the ability to reduce elemental sulfur, but not sulfate, thiosulfate or sulfite into sulfide. The optimum growth conditions were 60 degrees C, pH 6.7-7.2 and 4-6 % NaCl. The DNA G+C content was 34.6 mol%. Strain MET-B(T) was phylogenetically related to members of the genus Petrotoga; Petrotoga miotherma, Petrotoga olearia and Petrotoga mexicana were the closest relatives, with type strains exhibiting more than 99 % identity in an analysis of small-subunit rRNA gene sequences. The values for DNA-DNA relatedness between the type strains of these three species and strain MET-B(T) were less than 42 %. As MET-B(T) was found to be genetically and physiologically different from other species of the genus Petrotoga, this strain is proposed as representing a novel species, for which the name Petrotoga halophila sp. nov. is proposed. The type strain is MET-B(T) (=DSM 16923(T)=CCUG 50214(T)).
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MESH Headings
- Bacterial Typing Techniques
- Congo
- DNA, Bacterial/analysis
- DNA, Ribosomal/analysis
- Genes, rRNA
- Gram-Negative Anaerobic Straight, Curved, and Helical Rods/classification
- Gram-Negative Anaerobic Straight, Curved, and Helical Rods/genetics
- Gram-Negative Anaerobic Straight, Curved, and Helical Rods/isolation & purification
- Gram-Negative Anaerobic Straight, Curved, and Helical Rods/physiology
- Hot Temperature
- Molecular Sequence Data
- Petroleum
- Phenotype
- Phylogeny
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Sodium Chloride
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Affiliation(s)
- Elizabeth Miranda-Tello
- El Colegio de la Frontera Sur, Unidad Chetumal, Departamento de Biotecnología Ambiental, Ecología Microbiana Aplicada y Contaminación, Av. del Centenario km 5.5, Col. Calderitas, CP 77900, Chetumal, Quintana Roo, Mexico
- IRD, UMR 180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, F-13288 Marseille cedex 09, France
| | - Marie-Laure Fardeau
- IRD, UMR 180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, F-13288 Marseille cedex 09, France
| | - Catherine Joulian
- BRGM, Environment and Process Division, Biotechnology Unit, BP 36009, F-45060 Orléans, France
- IRD, UMR 180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, F-13288 Marseille cedex 09, France
| | - Michel Magot
- Université de Pau et des Pays de l'Adour, Laboratoire d'Ecologie Moléculaire EA3525, F-64013 Pau, France
| | - Pierre Thomas
- IRD, UMR 180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, F-13288 Marseille cedex 09, France
| | - Jean-Luc Tholozan
- IRD, UMR 180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, F-13288 Marseille cedex 09, France
| | - Bernard Ollivier
- IRD, UMR 180, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL case 925, 163 Avenue de Luminy, F-13288 Marseille cedex 09, France
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41
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Escobar C, Bravo L, Hernández J, Herrera L. Hydrogen sulfide production from elemental sulfur byDesulfovibrio desulfuricans in an anaerobic bioreactor. Biotechnol Bioeng 2007; 98:569-77. [PMID: 17421040 DOI: 10.1002/bit.21457] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Feasibility of elemental sulfur reduction by Desulfovibrio desulfuricans in anaerobic conditions in a stirred reactor was studied. Hydrogen was used as energy source, whereas the carbonated species were bicarbonate and yeast extract. Attention was paid to reactor engineering aspects, biofilm formation on the sulfur surface, hydrogen sulfide formation rate and kinetics limitations of the sulfur reduction. D. desulfuricans formed stable biofilms on the sulfur surface. It was found that active sulfur surface availability limits the reaction rate. The reaction rate was first order with respect to sulfur and hydrogen velocity had no effect in the reaction rate for the range 8.2 x 10(-2) to 4.1 x 10(-1) Nm(3) m(-2) min(-1). At a superficial gas velocity (u(G)) = 3.1 x 10(-2) Nm(3) m(-2) min(-1), H(2)S(g) production rate decreased due to a deficient H(2)S stripping. A maximum H(2)S(g) production rate of 2.1 g H(2)S L(-1) d(-1) was achieved during 5 days with an initial sulfur density of 4.7% (w/v).
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Affiliation(s)
- Claudio Escobar
- Chemical Engineering and Biotechnology Department, Universidad de Chile, Beaucheff 861, Santiago 8370456, Región Metropolitana, Chile.
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Uz I, Ogram AV. Cellulolytic and fermentative guilds in eutrophic soils of the Florida Everglades. FEMS Microbiol Ecol 2006; 57:396-408. [PMID: 16907754 DOI: 10.1111/j.1574-6941.2006.00120.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
The northern Florida Everglades has been subject to eutrophication in recent years, resulting in well-documented changes in microbial ecology and a shift in the dominant plant species. This study investigated effects of plant quality and eutrophication on activities and composition of cellulolytic and fermentative guilds in soils. Most probable numbers of cellulolytic bacteria in eutrophic (F1) and transition (F4) soils were 10-fold higher than in oligotrophic soils (U3). Higher potential methanogenesis was observed from cellulose in microcosms with soils from F1 and F4, compared to U3 soils. Nutrient status of soil, rather than plant type, was the major factor controlling methanogenesis rates, although numbers of fermentative bacteria were higher in microcosms supplemented with ground cattail (dominant in F1 and F4) than with sawgrass (dominant component of soil in U3), regardless of soil origin. DNA sequence analysis indicated Clostridium assemblage composition correlates with soil nutrient status.
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Affiliation(s)
- Ilker Uz
- Soil and Water Science Department, University of Florida, Gainesville, FL 32611-0290, USA
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Alazard D, Badillo C, Fardeau ML, Cayol JL, Thomas P, Roldan T, Tholozan JL, Ollivier B. Tindallia texcoconensis sp. nov., a new haloalkaliphilic bacterium isolated from lake Texcoco, Mexico. Extremophiles 2006; 11:33-9. [PMID: 16932842 DOI: 10.1007/s00792-006-0006-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2005] [Accepted: 05/25/2006] [Indexed: 10/24/2022]
Abstract
A new alkaliphilic and moderately halophilic, strictly anaerobic, fermentative bacterium (strain IMP-300(T)) was isolated from a groundwater sample in the zone of the former soda lake Texcoco in Mexico. Strain IMP-300(T) was Gram-positive, non-sporulated, motile and rod-shaped. It grew within a pH range from 7.5 to 10.5, and an optimum at 9.5. The organism was obligately dependent on the presence of sodium salts. Growth showed an optimum at 35 degrees C with absence of growth above 45 degrees C. It fermented peptone and a few amino acids, preferentially arginine and ornithine, with production of acetate, propionate, and ammonium. Its fatty acid pattern was mainly composed of straight chain saturated, unsaturated, and cyclopropane fatty acids. The G + C content of genomic DNA was 40.0 mol%. Analysis of the 16S rRNA gene sequence indicated that the new isolate belongs to the genus Tindallia, in the low G + C Gram-positive phylum. Phylogenetically, strain IMP-300(T) has Tindallia californiensis, as closest relative with a 97.5% similarity level between their 16S rDNA gene sequences, but the DNA-DNA re-association value between the two DNAs was only 42.2%. On the basis of differences in genotypic, phenotypic, and phylogenetic characteristics, strain IMP-300(T) is proposed as a new species of the genus Tindallia, T. texcoconensis sp. nov. (type strain IMP-300(T ) = DSM 18041(T) = JCM 13990(T)).
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Affiliation(s)
- Didier Alazard
- IRD, Cicerón 609, Colonia Los Morales, Cp 11530, México D. F., Mexico.
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