1887

Abstract

A bacterial strain, designated Jyi-02, was isolated from a flooded rice field in Taiwan and characterized using the polyphasic taxonomy approach. Cells of strain Jyi-02 were aerobic, Gram-stain-negative, rod-shaped, non-motile and formed yellowish orange coloured colonies. Growth occurred at 10–40 °C (optimum, 20 °C) and pH 5.0–9.0 (optimum, pH 7.0) and in the presence of 0–1.0 % NaCl (optimum, 0 %, w/v). The major fatty acids (>10 %) of strain Jyi-02 were Cω7, summed feature 3 (Cω7 and/or Cω6) and C 2-OH. The polar lipid profile consisted of a mixture of phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, diphosphatidylglycerol, phosphatidyldimethylethanolamine, sphingoglycolipid, an uncharacterized phospholipid and an uncharacterized lipid. The major polyamine was spermidine. The major isoprenoid quinone was Q-10. The DNA G+C content was 64.8 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain Jyi-02 belonged to the genus and had closest phylogenetic similarity to CC-TPE-1 (97.8 %). The DNA–DNA relatedness of strain Jyi-02 with respect to valid published species of the genus was less than 35 %. Phenotypic characteristics of the novel strain also differed from those of the closest related species of the genus . On the basis of the genotypic, chemotaxonomic and phenotypic data, strain Jyi-02 represents a novel species in the genus , for which the name sp. nov. is proposed. The type strain is Jyi-02 (=BCRC 80537=KCTC 32422).

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2018-07-01
2020-01-17
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