Pedobacter panacis sp. nov., isolated from Panax ginseng soil

Priyanka Singh, Hina Singh, Yeon-Ju Kim, Deok-Chun Yang
Antonie Van Leeuwenhoek 2017, 110 (2): 235-244
A novel strain, DCY108(T) was isolated from soil of a Panax ginseng field, Yeoncheon province (38°04'N 126°57'E), Republic of Korea. Strain DCY108(T) is Gram-negative, non-motile, non-flagellate, rod-shaped, and aerobic. The bacterium grows optimally at 25-30 °C, pH 6.5-7.0 and 1 % NaCl. Phylogenetically, strain DCY108(T) is closely related to Pedobacter jejuensis JCM 18824(T), Pedobacter aquatilis JCM 13454(T), Pedobacter kyungheensis LMG 26577(T) and the type strain of the genus Pedobacter heparinus DSM 2366(T). The DNA-DNA relatedness values between strain DCY108(T) and its close phylogenetic neighbors were below 30.0 %. The DNA G+C content of strain DCY108(T) was determined to be 45.1 mol%. The predominant quinone was menaquinone 7 (MK-7). The major polar lipids were identified as phosphatidylethanolamine and three unidentified aminolipids AL1, AL13 and AL17. Iso-C15:00, iso-C17:03OH and summed feature 3 (C16:1 ω7c/C16:1 ω6c) were identified as the major fatty acids present in strain DCY108(T). The results of physiological and biochemical tests allowed strain DCY108(T) to be differentiated phenotypically from other recognized species belonging to the genus Pedobacter. Therefore, it is suggested that the newly isolated organism represents a novel species, for which the name Pedobacter panacis sp. nov is proposed with the type strain designated as DCY108(T) (=CCTCCAB 2015196(T) = KCTC 42748(T)).

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