Mesotoga
               
            
            infera sp. nov., a mesophilic member of the order 
               
                  Thermotogales
               
            , isolated from an underground gas storage aquifer

Hania, Wajdi Ben; Postec, Anne; Aüllo, Thomas; Ranchou-Peyruse, Anthony; Erauso, Gaël; Brochier-Armanet, Céline; Hamdi, Moktar; Ollivier, Bernard; Saint-Laurent, Stéphanie; Magot, Michel; Fardeau, Marie‐Laure

doi:10.1099/ijs.0.047993-0

Cited by 58 publications

(21 citation statements)

References 23 publications

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“…So far, the genus Mesotoga is the only strictly mesophilic Thermotogae, with optimal growth occurring between 37 and 45°C (Nesbø et al 2012;Ben Hania et al 2013). Initially Mesotoga spp.…”

Section: Transition To Mesophily In Kosmotoga and Mesotogamentioning

confidence: 99%

“…were detected using molecular tools such as community 16S rRNA PCR and metagenome analyses (Nesbø et al 2006b). Mesotoga prima was the first described isolate of the genus (Nesbø et al 2012), which now includes another validated species, Mesotoga infera, (Ben Hania et al 2013), one yet to be validated, Mesotoga sp. strain PhosAc3 (Ben Hania et al 2011), and several isolates with ongoing genome sequencing projects (Benson et al 2014;Reddy et al 2015).…”

Section: Transition To Mesophily In Kosmotoga and Mesotogamentioning

confidence: 99%

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Insights into thermoadaptation and the evolution of mesophily from the bacterial phylum Thermotogae

2015

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Thermophiles are extremophiles that grow optimally at temperatures >45°C. To survive and maintain function of their biological molecules, they have a suite of characteristics not found in organisms that grow at moderate temperature (mesophiles). At the cellular level, thermophiles have mechanisms for maintaining their membranes, nucleic acids, and other cellular structures. At the protein level, each of their proteins remains stable and retains activity at temperatures that would denature their mesophilic homologs. Conversely, cellular structures and proteins from thermophiles may not function optimally at moderate temperatures. These differences between thermophiles and mesophiles presumably present a barrier for evolutionary transitioning between the 2 lifestyles. Therefore, studying closely related thermophiles and mesophiles can help us determine how such lifestyle transitions may happen. The bacterial phylum Thermotogae contains hyperthermophiles, thermophiles, mesophiles, and organisms with temperature ranges wide enough to span both thermophilic and mesophilic temperatures. Genomic, proteomic, and physiological differences noted between other bacterial thermophiles and mesophiles are evident within the Thermotogae. We argue that the Thermotogae is an ideal group of organisms for understanding of the response to fluctuating temperature and of long-term evolutionary adaptation to a different growth temperature range.Key words: lateral gene transfer, Kosmotoga, Mesotoga, thermostability, stress response. Résumé :Les thermophiles sont des extrémophiles dont la température optimale de croissance se situe au-delà de 45°C. Pour survivre et permettre à leurs biomolécules de bien fonctionner, ils doivent se doter de caractéristiques qu'on ne retrouve pas chez des organismes se développant à des températures intermédiaires (mésophiles). Sur le plan cellulaire, les thermophiles ont des mécanismes permettant de préserver leurs membranes, acides nucléiques et autres structures cellulaires. Au chapitre des protéines, chacune d'entre elles demeure stable et active à des températures qui dénatureraient leurs homologues mésophiles. En revanche, les structures et protéines cellulaires des thermophiles pourraient ne pas fonctionner de manière optimale à des températures intermédiaires. De telles différences entre les thermophiles et les mésophiles auraient tendance à se dresser en travers d'une transition évolutive entre ces deux modes de vie. Par conséquent, l'étude de thermophiles et de mésophiles fortement apparentés pourrait nous permettre d'établir comment surviendraient de telles transitions du mode de vie. Le phylum bactérien Thermotogae regroupe des hyperthermophiles, des thermophiles, des mésophiles et des organismes dont l'intervalle de températures chevauche les plages thermophiles et mésophiles. On observe parmi les Thermotogae des différences sur le plan génomique, protéomique, et physiologique qu'on relève également entre d'autres thermophiles et méso-philes bactériens. Nous soutenons que les Thermot...

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Section: Transition To Mesophily In Kosmotoga and Mesotogamentioning

confidence: 99%

Section: Transition To Mesophily In Kosmotoga and Mesotogamentioning

confidence: 99%

Insights into thermoadaptation and the evolution of mesophily from the bacterial phylum Thermotogae

2015

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“…M. prima and M. infera) or which were demonstrated to use sugars only oxidatively in the presence of elemental sulfur as terminal electron acceptor (e.g. M. infera) [67][68][69]. Thermotogales that have been recovered from oilfield waters and facilities [23] ( Fig.…”

Section: Kosmotoga Arenicorallina (T) S304 2 (Ab530678)mentioning

confidence: 97%

8. Petroleum: from formation to microbiology

Ollivier¹,

Borgomano²,

Oger³

2014

Microbial Life of the Deep Biosphere

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Economic petroleum accumulations result from the migration in the lithosphere of hydrocarbons formed by the maturation of kerogen. This is a long-term process mainly controlled by temperature and pressure conditions that depend on the geological evolution of the hosting sedimentary basin.Cultural and molecular approaches both reveal that petroleum reservoirs are inhabited by a wide range of mesophilic and thermophilic/hyperthermophilic anaerobic microorganisms able to ferment or oxidize their substrates. Among them sulfatereducing prokaryotes and methanoarchaea are recognized as important contributors to the geomicrobiology of these ecosystems because of their hydrogenotrophic and/or acetoclastic nature. Some of them together with members of the Thermotogales, and other fermentative prokaryotes are considered as indigenous to oil reservoirs. Taking into account the high microbial metabolic diversity existing in oil reservoirs, we may expect the activity of many of these oilfield microorganisms to be of interest in enhancing oil recovery in the next future. Petroleum formationPetroleum is a general term for a mixture of hydrocarbons that exist naturally on Earth in gaseous (natural gas), liquid (crude oil) and solid (asphalt) states and are characterized by density lower than that of water [1]. Typical compounds of petroleum contain carbon and hydrogen (C H ) with small amounts of oxygen, nitrogen and sulfur.Petroleum occurs generally in sedimentary rocks formed under marine or terrestrial environments and buried in the external envelop of the lithosphere ( Fig. 8.1 (a)). Its complex nature is evidenced by the high numbers (> 1000) of hydrocarbon species that have been identified since petroleum exploitation started in the 19 ℎ century [2]. Under natural conditions, petroleum gas is composed by saturated hydrocarbons (alkanes) with one to three carbon atoms. Petroleum oil is a complex mixture of alkanes with more than four carbon atoms, such as paraffin, cyclo-alkanes and aromatics [3]. Sulfur, nitrogen and oxygen can be present in oil within complex organic molecules such as resins and asphalts. The presence of biomarkers in petroleum (e.g. elements of chlorophyll or cellulose for example) demonstrated the organic origin of oil and gas despite ancient but famous inorganic theories by Porfir'ev [4] and Gold and Soter [5]. Brought to you by | Stockholms Universitet Authenticated Download Date | 8/25/15 7:03 AM Brought to you by | Stockholms Universitet Authenticated Download Date | 8/25/15 7:03 AM 8.2 Petroleum formation | 163Petroleum formation can be considered as a set of physico-chemico-biological processes within the general organic carbon cycle on Earth, from life, built with elementary chemical components (C,H,O,N), to the production of organic matter and its ultimate decomposition into chemical elements taken by life, thus looping the cycle [6]. This cycle operates in the external Earth envelops, under the influence of solar and earth mantel energy, and can be separated in several interacting subcycles wit...

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“…Especially T-RF of 160 bp probably represented Candidatus Cloacamonas acidaminovorans, which derived most of its carbon and energy from the fermentation of amino acids and was a syntrophic bacterium presenting in many anaerobic digesters [39]. And the T-RF of 166 bp probably represented Mesotoga prima isolated from a polychlorinated biphenyl (PCB)-dechlorinating enrichment culture from Baltimore Harbor sediments [40]. As for T-RF of 486 bp probably represented Eubacterium sulci, fermenting putrescine and lysine to acetate, butyrate, molecular hydrogen and ammonia [41].…”

Section: Effect Of Amx Concentration On Microbial Community Structurementioning

confidence: 98%

Influence of the amoxicillin concentration on organics removal and microbial community structure in an anaerobic EGSB reactor treating with antibiotic wastewater

Meng

Wang

et al. 2015

Chemical Engineering Journal

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Mesotoga infera sp. nov., a mesophilic member of the order Thermotogales , isolated from an underground gas storage aquifer

Abstract: Mesotoga infera sp. nov., a mesophilic member of the order Thermotogales, isolated from an underground gas storage aquifer

Cited by 58 publications

References 23 publications

Insights into thermoadaptation and the evolution of mesophily from the bacterial phylum Thermotogae

Insights into thermoadaptation and the evolution of mesophily from the bacterial phylum Thermotogae

8. Petroleum: from formation to microbiology

Influence of the amoxicillin concentration on organics removal and microbial community structure in an anaerobic EGSB reactor treating with antibiotic wastewater

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