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Abstract

A novel marine actinomycete, designated SCSIO 00652, was isolated from a marine sediment collected from the northern South China Sea at a depth of 3865 m. The strain formed branched substrate mycelia and no fragmentation was found. Abundant aerial mycelia differentiated into long spore chains and the spores had a wrinkled surface. Growth occurred on ISP medium 2 with 0–5 % (w/v) NaCl and at 10–55 °C. The whole-cell hydrolysate contained -diaminopimelic acid and glucose as the whole-cell sugar. search results based on an almost-complete 16S rRNA gene sequence showed the novel strain had the highest similarity (96.5 %) with VKM Ac-942. The phylogenetic tree of the family indicated that strain SCSIO 00652 formed a distinct lineage at the deepest branch with a high bootstrap value. Additionally, the profiles of menaquinones, phospholipids and fatty acids showed there were marked differences between strain SCSIO 00652 and the recognized genera of the family . Based on the polyphasic data, a new genus, gen. nov., is proposed within the family with the type species sp. nov. The type strain of the type species is SCSIO 00652 (=DSM 45154=CCTCC AA 208041).

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2009-05-01
2020-01-18
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