title: Sphingomonas formosensis sp. nov., a polycyclic aromatic hydrocarbon-degrading bacterium isolated from agricultural soil.
abstract: In the present study, a yellow-pigmented, Gram-negative, short rod-shaped novel bacterium that was capable of degrading a wide range of polycyclic aromatic hydrocarbons (naphthalene, phenanthrene and pyrene) was isolated from agricultural soil located in Yunlin County, Taiwan. Comparative 16S rRNA gene sequence analysis positioned the novel strain in the genus Sphingomonas as an independent lineage adjacent to a subclade containing Sphingomonas fennica K101(T), Sphingomonas histidinilytica UM2(T), Sphingomonas wittichii RW1(T) and Sphingomonas haloaromaticamans A175(T). 16S rRNA gene sequence analysis of strain CC-Nfb-2(T) showed highest sequence similarity to S. fennica K101(T) (96.2%), S. histidinilytica UM2(T) (96.1%), S. wittichii RW1(T) (95.9%), S. haloaromaticamans A175(T) (95.7%), and Sphingobium ummariense RL-3(T) (94.7%); lower sequence similarities were observed with strains of all other Sphingomonas species. The strain contained phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, sphingoglycolipid and diphosphatidylglycerol. The predominant fatty acids were summed feature 8 (C(18:1)ω7c and/or C(18:1)ω6c) C(16:0) and 11-methyl C(18:1)ω7c; C(14:0) 2-OH was the major 2-hydroxy fatty acid. Previously, these lipids have been found to be characteristic of members of the genus Sphingomonas. The serine palmitoyl transferase gene (spt) was also detected and sphingolipid synthesis was confirmed. The predominant isoprenoid quinone system was ubiquinone (Q-10) and the isolate contained sym-homospermidine as the major polyamine. The DNA G+C content of the isolate was 62.8±0.8 mol%. On the basis of chemotaxonomic, phenotypic and phylogenetic data, strain CC-Nfb-2(T) represents a novel species within the genus Sphingomonas, for which the name Sphingomonas formosensis sp. nov. is proposed; the type strain is CC-Nfb-2(T) (=BCRC 80272(T)=DSM 24164(T)).
authors.affiliation: Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC.
authors.forename: Shih-Yao
authors.initials: SY
authors.lastname: Lin
authors.affiliation: Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC.
authors.forename: Fo-Ting
authors.initials: FT
authors.lastname: Shen
authors.affiliation: Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC.
authors.forename: Wei-An
authors.initials: WA
authors.lastname: Lai
authors.affiliation: Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC.
authors.forename: Zhi-Long
authors.initials: ZL
authors.lastname: Zhu
authors.affiliation: Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, Kaohsiung, Taiwan, ROC.
authors.forename: Wen-Ming
authors.initials: WM
authors.lastname: Chen
authors.affiliation: Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, Kaohsiung, Taiwan, ROC.
authors.forename: Jui-Hsing
authors.initials: JH
authors.lastname: Chou
authors.affiliation: Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC.
authors.forename: Zih-Yu
authors.initials: ZY
authors.lastname: Lin
authors.affiliation: Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC.
authors.forename: Chiu-Chung
authors.initials: CC
authors.lastname: Young
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D016000:Cluster Analysis; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis; D008969:Molecular Sequence Data; D010743:Phospholipids / Q000032:analysis; D010802:Phylogeny; D010860:Pigments, Biological / Q000378:metabolism; D011073:Polyamines / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000378:metabolism*; D011809:Quinones / Q000032:analysis; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D051102:Serine C-Palmitoyltransferase / Q000378:metabolism; D012988:Soil Microbiology; D013107:Sphingolipids / Q000378:metabolism; D020578:Sphingomonas / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism; D013624:Taiwan
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D010743:Phospholipids; D010860:Pigments, Biological; D011073:Polyamines; D011084:Polycyclic Aromatic Hydrocarbons; D011809:Quinones; D012336:RNA, Ribosomal, 16S; D013107:Sphingolipids; D051102:Serine C-Palmitoyltransferase