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Abstract

A Gram-positive bacterium originating from the surface-sterilized leaf of Paris polyphylla var. yunnanensis (Franch.) was characterized by using a polyphasic approach. The isolate formed yellow, smooth, circular colonies on nutrient agar with 0.2 % starch (NSA). Cells were non-motile, non-sporulating, irregular rods or cocci. Strain CPCC 203535 had the highest 16S rRNA gene sequence similarity to the type strain of Ornithinimicrobium kibberense (96.9 %) and formed the deepest branch in the genus Ornithinimicrobium in the neighbour-joining (NJ) phylogenetic tree based on 16S rRNA gene sequences. The major menaquinones of strain CPCC 203535 were MK-8(H4), MK-8(H2) and MK-8. The peptidoglycan contained ornithine as the diagnostic diamino acid. The polar lipid profile consisted of diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylinositol (PI) and unknown lipid (UL). The major fatty acids iso-C14 : 0, iso-C15 : 0, iso-C16 : 0 and anteiso-C15 : 0 were consistent with the fatty acid patterns reported for members of the genus Ornithinimicrobium . The DNA G+C composition is 71.4 mol%. The results of physiological and biochemical tests allowed phenotypic differentiation of strain CPCC 203535 from its closest phylogenetic species in the genus Ornithinimicrobium . Strain CPCC 203535 represents a novel species of the genus Ornithinimicrobium , for which the name Ornithinimicrobium flavum sp. nov. is proposed, with CPCC 203535 (=NBRC 109452 =KCTC 29164) as the type strain.

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2017-09-25
2019-10-23
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