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  • Title: Labrys soli sp. nov., isolated from the rhizosphere of ginseng.
    Author: Nguyen NL, Kim YJ, Hoang VA, Kang JP, Wang C, Zhang J, Kang CH, Yang DC.
    Journal: Int J Syst Evol Microbiol; 2015 Nov; 65(11):3913-3919. PubMed ID: 28875912.
    Abstract:
    In this study, we describe strain DCY64T that was isolated from the rhizosphere of three-year-old Korean ginseng root. Cells were Gram-reaction negative, oxidase- and catalase-positive, strictly aerobic, capsulated, non-motile, non-sporulating and spherical to short rod-shaped. Multiplicative budding cells were produced. Vesicles covered the surface of cells. Phylogenetic analysis placed strain DCY64T within the genus Labrys with the highest similarity to Labrys monachus VKM B-1479T (97.6 % 16S rRNA gene sequence similarity), followed by Labrys okinawensis MAFF 210191T (97.5 %), Labrys miyagiensis G24103T (97.4) and Labrys portucalensis F11T (97.0 %). The genomic DNA G+C content was 63 mol%. The presences of summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c), C19 : 1 cyclo ω8c and C16 : 0 as major fatty acids; phosphatidylmonomethylethanolamine, phosphatidylglycerol, phosphatidylcholine and diphosphatidylglycerol as major polar lipids; ubiquinone Q-10 as the predominant quinone and sym-homospermidine as the dominant polyamine were found in strain DCY64T. These chemotaxonomic results were in accordance with those of members of the genus Labrys. However, the absence of C16 : 0 2-OH, C16 : 0 3-OH and C18 : 1 2-OH from the fatty acids profile and differences in minor polar lipids and phenotypic characteristics distinguished strain DCY64T from the closest type strains. The discrimination was also supported by unique enterobacterial repetitive intergenic consensus sequence PCR (ERIC-PCR) fingerprints, as well as DNA-DNA hybridization values ( ≤ 48 %) between strain DCY64T and related type strains. Therefore, we propose that strain DCY64T represents a novel species of the genus Labrys. The name Labrys soli sp. nov. is proposed, with DCY64T ( = KCTC 32173T = JCM 19895T) as the type strain.
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