Abstract
A novel actinobacterial strain, designated P4-5(T), was isolated from soil of a ginseng field located in Geumsan County, Republic of Korea. Cells of strain P4-5(T) were Gram-stain-positive, oxidase- and catalase-positive, motile, short rods and the strain produced creamy white colonies on trypticase soy agar. The isolate contained demethylmenaquinone 7 (DMK-7) as the predominant isoprenoid quinone, C(18:1)ω9c and anteiso-C(15:0) as major fatty acids, diphosphatidylglycerol, phosphatidylglycerol and several unknown lipids in the polar lipid profile, galactose, glucose, mannose, arabinose, xylose (trace) and rhamnose as cell-wall sugars, and meso-diaminopimelic acid as the diagnostic diamino acid in the cell-wall peptidoglycan. The DNA G+C content of strain P4-5(T) was 74.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequencing showed that strain P4-5(T) was related most closely to Patulibacter minatonensis KV-614(T) and Patulibacter americanus CP177-2(T) (98.4 and 98.2% similarity, respectively) and that it formed a separate lineage in the genus Patulibacter. Combined phenotypic and DNA-DNA hybridization data supported the conclusion that strain P4-5(T) represents a novel species of the genus Patulibacter, for which the name Patulibacter ginsengiterrae sp. nov. is proposed. The type strain is P4-5(T) (=KCTC 19427(T) =CECT 7603(T)). An emended description of the genus Patulibacter is also provided.
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