title: Burkholderia oxyphila sp. nov., a bacterium isolated from acidic forest soil that catabolizes (+)-catechin and its putative aromatic derivatives.
abstract: A novel bacterium, designated strain OX-01(T), was isolated from acidic soil, taxonomically investigated and identified as an agent that catabolizes (+)-catechin into taxifolin. Strain OX-01(T) is a Gram-reaction-negative, aerobic, non-sporulating, non-motile and rod-shaped bacterium. 16S rRNA gene sequence analysis identified this strain as a member of the genus Burkholderia and occupying a phylogenetic position closest to, but clearly distinct from, Burkholderia sacchari. Strain OX-01(T) does not have any nif genes, which are required for N(2)-fixation, in its genome, a feature that is similar to B. sacchari, which lacks nifH, but is distinct from the N(2)-fixing features of many other phylogenetically related taxa, such as Burkholderia ferrariae, B. heleia, B. mimosarum, B. nodosa, B. silvatlantica, B. tropica and B. unamae. Strain OX-01(T) has the following chemotaxonomic characteristics: the major ubiquinone is Q-8, the DNA G+C content is 64&emsp14;mol% and the major fatty acids are C(16 : 0), C(17 : 0) cyclo and C(18 : 1)ω7c. It also has a unique profile of carbohydrate utilization among other species of the genus Burkholderia. The strain cannot assimilate many pentoses, hexoses and oligosaccharides, whereas it can catabolize (+)-catechin and its putative aromatic derivatives, such as 4-hydroxy-3-methoxycinnamic acid, protocatechuic acid, p-hydroxybenzoic acid, trans-p-coumaric acid and vanillic acid. Based on its morphological, physiological and chemotaxonomic characteristics, together with DNA-DNA relatedness values and 16S rRNA gene sequence comparison data, we show that strain OX-O1(T) represents a novel species of the genus Burkholderia, for which the name Burkholderia oxyphila sp. nov. is proposed. The type strain is OX-01(T) (=NBRC 105797(T) =DSM 22550(T)).
authors.affiliation: Department of Biomass Chemistry, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki 305-8687, Japan.
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Otsuka
authors.affiliation: Resource Collection Division, NITE Biological Resource Centre Department of Biotechnology, National Institute of Technology and Evaluation, 2-5-8 Kazusakamatari, Kisarazu-shi, Chiba 292-0818, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Muramatsu
authors.affiliation: Resource Collection Division, NITE Biological Resource Centre Department of Biotechnology, National Institute of Technology and Evaluation, 2-5-8 Kazusakamatari, Kisarazu-shi, Chiba 292-0818, Japan.
authors.forename: Yasuyoshi
authors.initials: Y
authors.lastname: Nakagawa
authors.affiliation: Toyama Prefectural University, Kurokawa 5180, Imizu, Toyama 939-0398, Japan.
authors.forename: Motoki
authors.initials: M
authors.lastname: Matsuda
authors.affiliation: Department of Applied Microbiology and Mushroom Sciences, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, lbaraki 305-8687, Japan.
authors.forename: Masaya
authors.initials: M
authors.lastname: Nakamura
authors.affiliation: Department of Applied Microbiology and Mushroom Sciences, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, lbaraki 305-8687, Japan.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Murata
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D019117:Burkholderia / Q000145:classification* / Q000302:isolation & purification / Q000378:metabolism; D050260:Carbohydrate Metabolism; D002392:Catechin / Q000378:metabolism*; D004269:DNA, Bacterial / Q000235:genetics; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D014197:Trees / Q000382:microbiology
chemical_list: D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S; D002392:Catechin