title: Polygonibacillus indicireducens gen. nov., sp. nov., an indigo-reducing and obligate alkaliphile isolated from indigo fermentation liquor for dyeing.
abstract: Obligately alkaliphilic and halophilic strains, designated In2-9T and D2-7, were isolated from a fermented Polygonum indigo (Polygonum tinctorium Lour.) liquor sample obtained from a craft centre in Date City, Hokkaido, Japan. The 16S rRNA gene sequence phylogeny suggested that strain In2-9T is a member of the genus Bacillus with the closest relatives being the alkaliphilic species of the genus Bacillus, Bacillus hemicellulosilyticusJCM 9152T (96.4 % 16S rRNA gene sequence similarity) and Bacillus alcalophilus DSM 485T (96.5 %). Cells of the isolate stained Gram-positive and were facultatively anaerobic straight rods that were motile by peritrichous flagella. Strain In2-9T grew between 13 and 45 °C with optimum growth at approximately 35-37 °C. The isolates grew in the pH range of 8-12 with optimum growth at pH 10. The isoprenoid quinone detected was menaquinone-6 (MK-6) and the DNA G+C content was 39.4 mol%. The whole-cell fatty acid profile mainly (>10 %) consisted of iso-C15 : 0, anteiso-C15 : 0 and C16 : 0. Spore shape and location and chemotaxonomic characteristics revealed that the isolates were distinctly different from phylogenetic neighbouring alkaliphilic species of the genus Bacillus. On the basis of phenotypic and chemotaxonomic characteristics and phylogenetic data, the isolates represent a novel species of a new genus, for which the name Polygonibacillusindicireducens gen. nov., sp. nov. is proposed. The type strain of the type species is In2-9T (=JCM 30831T=NCIMB 14982T), and strain D2-7 is an additional strain of the species.
authors: Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukisamu-Higashi, Toyohira-ku, Sapporo 062-8517, Japan.
authors: Kikue
authors: K
authors: Hirota
authors: Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukisamu-Higashi, Toyohira-ku, Sapporo 062-8517, Japan.|School of Biological Science and Engineering, Tokai University, Minamisawa, Minami-ku, Sapporo 005-8601, Japan.
authors: Takahiro
authors: T
authors: Okamoto
authors: School of Biological Science and Engineering, Tokai University, Minamisawa, Minami-ku, Sapporo 005-8601, Japan.
authors: Hidetoshi
authors: H
authors: Matsuyama
authors: Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukisamu-Higashi, Toyohira-ku, Sapporo 062-8517, Japan.|Laboratory of Molecular Environmental Microbiology, Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan.
authors: Isao
authors: I
authors: Yumoto
mesh_terms: D001406:Bacillaceae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004396:Coloring Agents; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D005285:Fermentation; D007203:Indigo Carmine; D007564:Japan; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D028502:Polygonum / Q000382:microbiology*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; C042455:menaquinone 6; D007203:Indigo Carmine