title: Nubsella zeaxanthinifaciens gen. nov., sp. nov., a zeaxanthin-producing bacterium of the family Sphingobacteriaceae isolated from freshwater.
abstract: A yellow-pigmented, Gram-negative, strictly aerobic, rod-shaped bacterium (TDMA-5(T)) was isolated from a freshwater sample collected at Misasa (Tottori, Japan). The DNA G+C content was 38.6 mol%. Major fatty acids were iso-C(15 : 0), iso-C(17 : 0) 3-OH and summed feature 4 (iso-C(15 : 0) 2-OH and/or C(16 : 1)omega7c). MK-7 was the predominant respiratory quinone. Zeaxanthin was the major carotenoid pigment produced; flexirubin-type pigments were not produced. TDMA-5(T) was sensitive to gamma-irradiation. The strain degraded gelatin, casein, starch, Tween 80 and DNA. Phylogenetic analysis based on the 16S rRNA gene sequence placed TDMA-5(T) in a distinct lineage in the family Sphingobacteriaceae, sharing 89.4-93.4 % sequence similarity with members of the nearest genus Pedobacter. Strain TDMA-5(T) could be distinguished from the other members of the family Sphingobacteriaceae by a number of chemotaxonomic and phenotypic characteristics. Based on its unique phenotypic, genotypic and phylogenetic features, strain TDMA-5(T) represents a novel genus and species, for which the name Nubsella zeaxanthinifaciens gen. nov., sp. nov. is proposed. The type strain of Nubsella zeaxanthinifaciens is TDMA-5(T) (=NBRC 102579(T) =CCUG 54348(T)).
authors.affiliation: Department of Food Science, University of Massachusetts, 100 Holdsworth Way, Amherst, MA 01003, USA. dasker10@gmail.com
authors.forename: Dalal
authors.initials: D
authors.lastname: Asker
authors.forename: Teruhiko
authors.initials: T
authors.lastname: Beppu
authors.forename: Kenji
authors.initials: K
authors.lastname: Ueda
mesh_terms: D015373:Bacterial Typing Techniques; D041963:Bacteroidetes / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D001482:Base Composition; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D005618:Fresh Water / Q000382:microbiology*; D020459:Genes, rRNA; D007564:Japan; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010641:Phenotype; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D013045:Species Specificity; D024341:Xanthophylls / Q000096:biosynthesis*; D065146:Zeaxanthins
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D024341:Xanthophylls; D065146:Zeaxanthins