1887

Abstract

A light-yellow-coloured bacterium, designated strain PTJT-5, was isolated from the stem of A. Gray collected from Taibai Mountain in Shaanxi Province, north-west China, and was subjected to a taxonomic study by using a polyphasic approach. The novel isolate grew optimally at 25–28 °C and pH 6.0–7.0. Flexirubin-type pigments were produced. Cells were Gram-reaction-negative, strictly aerobic, rod-shaped and non-motile. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain PTJT-5 was a member of the phylum , exhibiting the highest sequence similarity to NJ-8 (87.7 %). The major cellular fatty acids were iso-C, iso-C G, iso-C and iso-C 3-OH. The only polyamine was homospermidine and the major polar lipid was phosphatidylethanolamine. The only respiratory quinone was MK-7 and the DNA GC content was 40.3 mol%. Based on the phenotypic, phylogenetic and genotypic data, strain PTJT-5 is considered to represent a novel species of a new genus in the family , for which the name gen. nov., sp. nov. is proposed. The type strain of is PTJT-5 ( = CCTCC AB 2013017 = KCTC 32316). An emended description of is also proposed.

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2013-10-01
2019-10-22
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