title: Chitinophaga qingshengii sp. nov., isolated from weathered rock surface.
abstract: A novel mineral-weathering bacterium was isolated from weathered rock (potassic trachyte) surfaces collected from Nanjing (Jiangsu, PR China). Cells of strain JN246(T) were Gram-stain-negative, rod-shaped and non-motile. Strain JN246(T) was aerobic, catalase- and oxidase-positive, and grew optimally at 28 °C and pH 7.0. On the basis of 16S rRNA gene sequence analysis, strain JN246(T) belonged to the genus Chitinophaga and the closest phylogenetic relatives were Chitinophaga eiseniae YC6729(T) (98.5% 16S rRNA gene sequence similarity), Chitinophaga terrae KP01(T) (96.8%), and Chitinophaga jiangningensis JN53(T) (96.3 %). The major respiratory quinone was MK-7 and the major polyamine was homospermidine. The major fatty acids were iso-C15:0, C16:1ω5c, C16:0 and iso-C17:0 3-OH. The polar lipid profile of strain JN246(T) consisted of phosphatidylethanolamine, unknown aminolipids and unknown lipids. The genomic DNA G+C content of strain JN246(T) was 48.8 mol%. Based on the low level of DNA-DNA relatedness of strain JN246(T) (ranging from 22.6% to 42.4%) to the type strains of other species of the genus Chitinophaga and unique phenotypic characteristics, strain JN246(T) represents a novel species of the genus Chitinophaga, for which the name Chitinophaga qingshengii sp. nov. is proposed. The type strain is JN246(T) ( = CCTCC AB 2014201(T) = JCM 30026(T)).
authors.affiliation: Key Laboratory of Agricultural Environment Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Cheng
authors.affiliation: Key Laboratory of Agricultural Environment Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Key Laboratory of Agricultural Environment Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
authors.forename: Lin-Yan
authors.initials: LY
authors.lastname: He
authors.affiliation: Key Laboratory of Agricultural Environment Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Huang
authors.affiliation: Key Laboratory of Agricultural Environment Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
authors.forename: Xia-Fang
authors.initials: XF
authors.lastname: Sheng
mesh_terms: D015373:Bacterial Typing Techniques; D041963:Bacteroidetes / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D001482:Base Composition; D002681:China; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D008969:Molecular Sequence Data; D010714:Phosphatidylethanolamines / Q000737:chemistry; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D013095:Spermidine / Q000737:chemistry; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D010714:Phosphatidylethanolamines; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; C483858:phosphatidylethanolamine; C062629:menaquinone 7; D013095:Spermidine