title: Methanococcus igneus sp. nov., a novel hyperthermophilic methanogen from a shallow submarine hydrothermal system.
abstract: A novel hyperthermophilic strictly chemolithoautotrophic member of the genus Methanococcus was isolated from a shallow (depth: 106 m) submarine vent system at the Kolbeinsey ridge, Iceland.  The isolate grew between 45 and 91 degrees C with an optimum around 88 degrees C (doubling time: 25 min).  It differs from Methanococcus jannaschii in its 16S rRNA sequence, its non-hybridizing DNA, and its selenium-independent growth.  Therefore, the isolate represents a new species which we name Methanococcus igneus.  Type strain is isolate "Kol 5" (DSM 5666).
authors.affiliation: Lehrstuhl für Mikrobiologie, Universität Regensburg, Federal Republic of Germany.
authors.forename: S
authors.initials: S
authors.lastname: Burggraf
authors.forename: H
authors.initials: H
authors.lastname: Fricke
authors.forename: A
authors.initials: A
authors.lastname: Neuner
authors.forename: J
authors.initials: J
authors.lastname: Kristjansson
authors.forename: P
authors.initials: P
authors.lastname: Rouvier
authors.forename: L
authors.initials: L
authors.lastname: Mandelco
authors.forename: C R
authors.initials: CR
authors.lastname: Woese
authors.forename: K O
authors.initials: KO
authors.lastname: Stetter
mesh_terms: D001105:Archaea / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D001483:Base Sequence; D005075:Biological Evolution; D004269:DNA, Bacterial / Q000235:genetics; D019605:Euryarchaeota / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D006358:Hot Temperature; D007055:Iceland; D008386:Marine Biology; D017017:Methanococcus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D009792:Oceans and Seas; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S