Sphingopyxis chilensis sp. nov., a chlorophenol-degrading bacterium that accumulates polyhydroxyalkanoate, and transfer of Sphingomonas alaskensis to Sphingopyxis alaskensis comb. nov.
Godoy, F.; Vancanneyt, M.; Martinez, M.; Steinbuchel, A.; Swings, J.; Rehm, B.H.A. (2003). Sphingopyxis chilensis sp. nov., a chlorophenol-degrading bacterium that accumulates polyhydroxyalkanoate, and transfer of Sphingomonas alaskensis to Sphingopyxis alaskensis comb. nov. Int. J. Syst. Evol. Microbiol. 53: 473-477. dx.doi.org/10.1099/ijs.0.02375-0
In: International Journal of Systematic and Evolutionary Microbiology. Society for General Microbiology: Reading. ISSN 1466-5026; e-ISSN 1466-5034, meer
The taxonomic position of a chlorophenol-degrading bacterium, strain S37T, was investigated. The 16S rDNA sequence indicated that this strain belongs to the genus Sphingopyxis, exhibiting high sequence similarity to the 16S rDNA sequences of Sphingomonas alaskensis LMG 18877T (98·8 %), Sphingopyxismacrogoltabida LMG 17324T (98·2 %), Sphingopyxis terrae IFO 15098T (95 %) and Sphingomonasadhaesiva GIFU 11458T (92 %). These strains (except Sphingopyxis terrae IFO 15098T, which was not investigated) and the novel isolate accumulated polyhydroxyalkanoates consisting of 3-hydroxybutyric acid and 3-hydroxyvaleric acid from glucose as carbon source. The G+C content of the DNA of strain S37T was 65·5 mol%. The major cellular fatty acids of this strain were octadecenoic acid (18 : 1ω7c), heptadecenoic acid (17 : 1ω6c) and hexadecanoic acid (16 : 0). The results of DNA–DNA hybridization experiments and its physiological characteristics clearly distinguished the novel isolate from all known Sphingopyxis species and indicated that the strain represents a novel Sphingopyxis species. Therefore, the species Sphingopyxischilensis sp. nov. is proposed, with strain S37T (=LMG 20986T =DSM 14889T) as the type strain. The transfer of Sphingomonas alaskensis to the genus Sphingopyxis as Sphingopyxis alaskensis comb. nov. is also proposed.
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