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Abstract

Strain 06168H-1 was isolated from a fishpond sediment sample collected from the southern area of Taiwan, and a polyphasic approach was used to determine its taxonomic position. The isolate grew between 20–40 °C and 0–8 % (w/v) NaCl. It produced branched and unfragmented substrate mycelia. Short spore chains (3–10 spores per chain) formed on branched aerial mycelia. The spore chains contained non-motile, smooth-surfaced, oval spores. Galactose, arabinose and ribose were the whole-cell sugars and -diaminopimelic acid was present in its peptidoglycan. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylmethylethanolamine, phosphatidylcholine, hydroxyphosphati dylethanolamine and a ninhydrin-positive phosphoglycolipid. The predominant menaquinone was MK-9(H) and minor components were MK-8(H) and MK-9(H). Mycolic acids were not detected. The major cellular fatty acids were iso-C and Cω6 and Cω8. The DNA G+C content of the strain was 70.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed this strain clustered with the members of the genus and was closely related to and . The levels of similarity between this strain and the closely related species were: BCRC16887, 98.34 %; BCRC 16220, 98.27 %; and BCRC 16886, 97.99 %. Based on phylogenetic characteristics, strain 06168H-1 represents a novel species of the genus We thus propose the name sp. nov. for this novel strain, with strain 06168H-1 (=BCRC 16893=KCTC 19743) as the type strain.

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2018-05-01
2020-04-04
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