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A bacterial strain capable of degrading pyrethroid, designated JZ-2T, was isolated from activated sludge treating pyrethroid-contaminated wastewater. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain JZ-2T belongs to the genus Sphingobium. It showed the highest levels of 16S rRNA gene sequence similarity to Sphingobium cloacae JCM 10874T (98.3 %) and Sphingobium ummariense CCM 7431T (97.1 %), and 94.8–96.9 % similarity to the type strains of other members of the genus Sphingobium. Strain JZ-2T contained C18 : 1 ω7c as the predominant fatty acid, C14 : 0 2-OH as the major 2-hydroxy fatty acid, ubiquinone Q-10 as the main respiratory quinone, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, phosphatidylmonomethylethanolamine, phosphatidylethanolamine and two sphingoglycolipids as the predominant polar lipids and spermidine as the major polyamine. DNA–DNA hybridization results showed that strain JZ-2T had low genomic relatedness with S. cloacae JCM 10874T (34 %) and S. ummariense CCM 7431T (23 %). Based on the phenotypic, genotypic and phylogenetic data presented, strain JZ-2T is considered to represent a novel species of the genus Sphingobium, for which the name Sphingobium faniae sp. nov. is proposed. The type strain is JZ-2T (=CGMCC 1.7749T =DSM 21829T).
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