title: Defining the taxonomic status of described subdivision 3 Acidobacteria: proposal of Bryobacteraceae fam. nov.
abstract: The phylum Acidobacteria represents one of the highly diverse but poorly characterized phylogenetic groups of the domain Bacteria. The taxonomically described acidobacteria belong to 27 genera and 49 species, which represent subdivisions 1, 3, 4, 6, 8, 10 and 23 of this phylum. However, the corresponding family ranks have been defined only for some of these characterized micro-organisms. Here, we suggest the establishment of a novel family, Bryobacteraceae fam. nov., to accommodate taxonomically described members of subdivision 3 Acidobacteria. This family is characterized by Gram-stain-negative, non-spore-forming and non-motile rods, which divide by binary fission. Members of this family are mildly acidophilic, mesophilic, aerobic and facultatively anaerobic chemoheterotrophs that utilize various sugars and polysaccharides. The major fatty acids are iso-C15 : 0 and C16 : 1ω7c; the cells also contain significant amounts of 13,16-dimethyloctacosanedioic (iso-diabolic) acid. Currently, the family comprises the genera Bryobacter and Paludibaculum.
authors.affiliation: Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia.
authors.forename: Svetlana N
authors.initials: SN
authors.lastname: Dedysh
authors.affiliation: Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia.
authors.forename: Irina S
authors.initials: IS
authors.lastname: Kulichevskaya
authors.affiliation: Department of Microbial Ecology and Diversity Research, Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany.
authors.forename: Katharina J
authors.initials: KJ
authors.lastname: Huber
authors.affiliation: Braunschweig University of Technology, Braunschweig, Germany.|Department of Microbial Ecology and Diversity Research, Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Overmann
mesh_terms: D061271:Acidobacteria / Q000145:classification*; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S