Taxonomy Citation ID | Reference |
---|---|
18873 | Skerman, V.B.D., McGowan, V., and Sneath, P.H.A. (editors). "Approved lists of bacterial names." Int. J. Syst. Bacteriol. (1980) 30:225-420. [No PubMed record available.] | 8104 |
Takeuchi M,
Hamana K,
Hiraishi A,
( 2001 ) Proposal of the genus Sphingomonas sensu stricto and three new genera, Sphingobium, Novosphingobium and Sphingopyxis, on the basis of phylogenetic and chemotaxonomic analyses. PMID : 11491340 DOI : 10.1099/00207713-51-4-1405 Abstract >>
Phylogenetic analyses of 16S rRNA gene sequences by distance matrix and parsimony methods indicated that the currently known species of the genus Sphingomonas can be divided into four clusters. Some chemotaxonomic and phenotypic differences were noted among these clusters. Three new genera, Sphingobium, Novosphingobium and Sphingopyxis, are proposed in addition to the genus Sphingomonas sensu stricto. The genus Sphingobium is proposed to accommodate Sphingomonas chlorophenolica, Sphingomonas herbicidovorans and Sphingomonas yanoikuyae. The genus Novosphingobium is proposed for Sphingomonas aromaticivorans, Sphingomonas capsulata, Sphingomonas rosa, Sphingomonas stygia, Sphingomonas subarctica and Sphingomonas subterranea. Sphingomonas macrogoltabidus and Sphingomonas terrae are reclassified in the genus Sphingopyxis. The type species of Sphingobium, Novosphingobium and Sphingopyxis are Sphingobium yanoikuyae, Novosphingobium capsulatum and Sphingopyxis macrogoltabida, respectively.
|
1586 |
( 1996 ) Description of chlorophenol-degrading Pseudomonas sp. strains KF1T, KF3, and NKF1 as a new species of the genus Sphingomonas, Sphingomonas subarctica sp. nov. PMID : 8863434 DOI : 10.1099/00207713-46-4-1042 Abstract >>
Gram-negative polychlorophenol-degrading bacterial strains KF1T (T = type strain), KF3, and NKF1, which were described previously as Pseudomonas saccharophila strains, were studied by chemotaxonomic, genetic, and physiological methods and by electron microscopy and compared with selected xenobiotic compound-degrading bacteria. These strains contained sphingolipids with d-18:0, d-20:1, and d-21:1 as the main dihydrosphingosines, ubiquinone 10 as the main respiratory quinone, and spermidine as the major polyamine, and the DNA G + C content was 66 mol%. The cellular fatty acids included about 60% octadecenoic acid, 9% 2-hydroxymyristic acid, 14% cis-9-hexadecenoic acid, and 10% hexadecanoic acid. These strains exhibited less than 97% 16S ribosomal DNA sequence similarity to all of the other taxa studied. In the DNA-DNA reassociation studies the highest levels of reassociation between these strains and previously described species were less than 40%. Thin sections of cells of strains KF1T, KF3, and NKF1 were examined by electron microscopy, and the results showed that the cells had peculiar concentrically arranged layered membranous blebs that extruded from the outer membrane, especially at the cell division points. On the basis of the results of this study, polychlorophenol-degrading strains KF1T, KF3, and NKF1 are considered members of a new species of the genus Sphingomonas, Sphingomonas subarctica. The polycyclic aromatic hydrocarbon-degrading organism Sphingomonas paucimobilis EPA 505 was closely related to Sphingomonas chlorophenolica as determined by chemotaxonomic, phylogenetic, and physiological criteria. The xenobiotic compound degraders Alcaligenes sp. strain A175 and Pseudomonas sp. strain BN6 were identified as members of species of the genus Sphingomonas.
|
18872 | Delaporte, B., and Daste, P. "Une bacterie du sol capable de decomposer la fraction fixe de certaines oleoresines Flavobacterium resinovorum n. sp." Compte Rendu de l'Academie des Sciences, Paris (1956) 242:831-834. [No PubMed record available.] | 18874 |
Lim YW,
Moon EY,
Chun J,
( 2007 ) Reclassification of Flavobacterium resinovorum Delaporte and Daste 1956 as Novosphingobium resinovorum comb. nov., with Novosphingobium subarcticum (Nohynek et al. 1996) Takeuchi et al. 2001 as a later heterotypic synonym. PMID : 17684279 DOI : 10.1099/ijs.0.64852-0 Abstract >>
The taxonomic status of Flavobacterium resinovorum Delaporte and Daste 1956 (Approved Lists 1980) was investigated using a polyphasic approach. The 16S rRNA gene sequence of F. resinovorum NCIMB 8767(T) was almost identical to that of the type strain of Novosphingobium subarcticum (Nohynek et al. 1996) Takeuchi et al. 2001, with 99.85 % sequence similarity. The DNA-DNA relatedness value between the type strains of these species was 100 %. Phenotypic comparison based on API 20E, API NE and API ZYM kits demonstrated that the type strains of F. resinovorum and N. subarcticum were also indistinguishable based on their biochemical properties. On the basis of genotypic and phenotypic evidence, it is therefore proposed to reclassify Flavobacterium resinovorum as Novosphingobium resinovorum comb. nov., with the type strain NCIMB 8767(T) =ATCC 33545(T) =DSM 7478(T) =LMG 8367(T), and that Novosphingobium subarcticum is a later heterotypic synonym of Novosphingobium resinovorum.
|
10936 |
Yabuuchi E,
Kosako Y,
Fujiwara N,
Naka T,
Matsunaga I,
Ogura H,
Kobayashi K,
( 2002 ) Emendation of the genus Sphingomonas Yabuuchi et al. 1990 and junior objective synonymy of the species of three genera, Sphingobium, Novosphingobium and Sphingopyxis, in conjunction with Blastomonas ursincola. PMID : 12361250 DOI : 10.1099/00207713-52-5-1485 Abstract >>
The 16S rDNA sequence similarities between the type strains of Sphingomonas paucimobilis and 32 other Sphingomonas species range from 90.2 to 99.6%. It might be possible to divide the genus into several new genera according to a dendrogram drawn from 16S rDNA sequence similarity. However, the phenotypic and biochemical information needed to define clusters of strains representing distinct genera within this group of organisms was not previously available. Although the cellular lipids of type strains of all 28 Sphingomonas species tested contained glucuronosyl-(1 --> 1)-ceramide together with 2-hydroxymyristic acid, other molecular species of sphingoglycolipids were distributed randomly. Sphingomonas natatoria and Sphingomonas ursincola, bacteriochlorophyll a-containing, gram-negative facultative phototrophs, belong to the cluster of the genus Sphingomonas. Other phototrophic Porphyrobacter and Erythrobacter species in the Sphingomonadaceae were classified into a cluster different from the genus Sphingomonas, as reported previously. None of the physiological and biochemical characteristics considered, including cellular lipids and fatty acid composition, provided evidence for the division of the current genus Sphingomonas. It is therefore concluded that the genus Sphingomonas should remain undivided at this time. The species of three recently proposed genera, Sphingobium, Novosphingobium and Sphingopyxis, in conjunction with Blastobacter ursincola, are junior objective synonyms of species of the genus Sphingomonas.
|