title: Sulfurimonas autotrophica gen. nov., sp. nov., a novel sulfur-oxidizing epsilon-proteobacterium isolated from hydrothermal sediments in the Mid-Okinawa Trough.
abstract: A novel mesophilic, sulfur- and thiosulfate-oxidizing bacterium, strain OK10(T), was isolated from deep-sea sediments at the Hatoma Knoll in the Mid-Okinawa Trough hydrothermal field. Cells of strain OK10(T) were short rods, each being motile by means of a single polar flagellum. The isolate grew at 10-40 degrees C (optimum 25 degrees C) and pH 4.5-9.0 (optimum pH 6.5). It grew chemolithoautotrophically with elemental sulfur, sulfide and thiosulfate as sole electron donors and oxygen as electron acceptor. Molecular hydrogen did not support growth. The G+C content of the genomic DNA of strain OK10(T) was 35.2 mol%. Phylogenetic analysis, based on 16S rRNA gene sequences, indicated that the isolate belonged to the epsilon-Proteobacteria. On the basis of its physiological and molecular characteristics, strain OK10(T) (=ATCC BAA-671(T)=JCM 11897(T)) represents the sole species of a new genus, Sulfurimonas, for which the name Sulfurimonas autotrophica is proposed.
authors.affiliation: Subground Animalcule Retrieval (SUGAR) Project, Frontier Research System for Extremophiles, Japan Marine Science and Technology Center (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan.
authors.forename: Fumio
authors.initials: F
authors.lastname: Inagaki
authors.forename: Ken
authors.initials: K
authors.lastname: Takai
authors.forename: Hideki
authors.initials: H
authors.lastname: Kobayashi
authors.forename: Kenneth H
authors.initials: KH
authors.lastname: Nealson
authors.forename: Koki
authors.initials: K
authors.lastname: Horikoshi
mesh_terms: D002167:Campylobacter / Q000145:classification* / Q000302:isolation & purification; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D020565:Epsilonproteobacteria / Q000145:classification* / Q000302:isolation & purification; D019015:Geologic Sediments / Q000382:microbiology*; D006358:Hot Temperature; D007564:Japan; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D013455:Sulfur / Q000378:metabolism; D013885:Thiosulfates / Q000378:metabolism; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D013885:Thiosulfates; D013455:Sulfur