title: Proliferation of the hyperthermophilic archaeon Pyrobaculum islandicum by cell fission.
abstract: Pyrobaculum islandicum is a hyperthermophilic archaeon. P. islandicum cells have been suggested to multiply by constriction, budding and branching, as no septa were observed in cells by phase-contrast light microscopy. In this study, we observed the cells using transmission electron microscopy, scanning electron microscopy, and light microscopy with dark-field image analyses, and we report binary fission via septum formation to be the main mode of P. islandicum's proliferation. "Long cells" reported previously were found to comprise several cylindrical cells that align in tandem.
authors.affiliation: Graduate School of Life Science, University of Hyogo, Kamigori, Hyogo, Japan.
authors.forename: Seiji
authors.initials: S
authors.lastname: Sonobe
authors.forename: Kazue
authors.initials: K
authors.lastname: Aoyama
authors.forename: Chihiro
authors.initials: C
authors.lastname: Suzuki
authors.forename: Ko-hei
authors.initials: KH
authors.lastname: Saito
authors.forename: Kumiko
authors.initials: K
authors.lastname: Nagata
authors.forename: Teruo
authors.initials: T
authors.lastname: Shimmen
authors.forename: Yoko
authors.initials: Y
authors.lastname: Nagata
mesh_terms: D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D041543:Pyrobaculum / Q000166:cytology / Q000254:growth & development* / Q000648:ultrastructure