title: Petrotoga mexicana sp. nov., a novel thermophilic, anaerobic and xylanolytic bacterium isolated from an oil-producing well in the Gulf of Mexico.
abstract: A novel anaerobic, thermophilic, xylanolytic, motile rod-shaped bacterium with a sheath-like outer structure (toga) was isolated from a Mexican oil well in the Gulf of Mexico. Strain MET12T was a Gram-negative bacterium, reducing elemental sulfur, thiosulfate and sulfite to hydrogen sulfide. Its optimum growth conditions were 55 degrees C, pH 6.6, 3% NaCl and 0.15% MgCl2.6H2O. The DNA G+C content was 36.1 mol%. Phylogenetically, strain MET12T was related to members of genus Petrotoga, with similarities to Petrotoga mobilis, Petrotoga sibirica, Petrotoga miotherma and Petrotoga olearia varying from 97.6 to 98.8%. However DNA-DNA relatedness values between these species and strain MET12T were lower than 70%. As strain MET12T (=DSM 14811T=CIP 107371T) was genomically and phenotypically different from existing Petrotoga species, it is proposed as the type strain of a novel species, Petrotoga mexicana sp. nov.
authors.affiliation: IRD, UR 101 Extrêmophiles, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL, Marseille, France.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Miranda-Tello
authors.affiliation: IRD, UR 101 Extrêmophiles, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL, Marseille, France.
authors.forename: Marie-Laure
authors.initials: ML
authors.lastname: Fardeau
authors.affiliation: IRD, UR 101 Extrêmophiles, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL, Marseille, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Thomas
authors.affiliation: Laboratorio de Tratamiento de Aguas Residuales, Universidad Autónoma Metropolitana, México, DF, Mexico.
authors.forename: Florina
authors.initials: F
authors.lastname: Ramirez
authors.affiliation: IRD, UR 101 Extrêmophiles, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL, Marseille, France.
authors.forename: Laurence
authors.initials: L
authors.lastname: Casalot
authors.affiliation: IRD, UR 101 Extrêmophiles, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL, Marseille, France.
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Cayol
authors.affiliation: IRD, UR 101 Extrêmophiles, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL, Marseille, France.
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Garcia
authors.affiliation: IRD, UR 101 Extrêmophiles, IFR-BAIM, Universités de Provence et de la Méditerranée, ESIL, Marseille, France.
authors.forename: Bernard
authors.initials: B
authors.lastname: Ollivier
mesh_terms: D016965:Gram-Negative Anaerobic Straight, Curved, and Helical Rods / Q000145:classification* / Q000302:isolation & purification / Q000378:metabolism; D008800:Mexico; D008969:Molecular Sequence Data; D010802:Phylogeny; D012623:Seawater / Q000382:microbiology*; D013431:Sulfates / Q000378:metabolism; D020124:Thermotoga maritima / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D013885:Thiosulfates / Q000378:metabolism
chemical_list: D013431:Sulfates; D013885:Thiosulfates