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Abstract

A yellow-coloured, marine actinobacterium, designated SST-45, was isolated from sandy sediment under the surface of a beach and taxonomically characterized by physiological, chemotaxonomic and phylogenetic methods. The cells of the isolate were Gram-positive, aerobic, non-sporulating, non-motile, spherical cells that occurred singly, in pairs, in clusters or as short chains. The isolate grew at 10–37 °C, an initial pH 5.1–12.1 and in the presence of 5 % (w/v) NaCl. The organism possessed -2,6-diaminopimelic acid as the diagnostic diamino acid in the cell wall, MK-8(H) as the major menaquinone, a polar lipid profile including diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and an unknown phospholipid, C and C as the major fatty acids, and a DNA G+C content of 72.4 mol%. A phylogenetic analysis based on 16S rRNA gene sequences showed that the organism was related to members of the genera and . The closest neighbours were DSM 12652 (97.0 % sequence similarity) and KCTC 9134 (96.7 %). The combination of morphological and chemotaxonomic characters supported the assignment of the isolate to the genus . However, the organism is clearly distinguished phenotypically from the single described species of this genus, . Based on the data obtained, the organism has been assigned as a novel species, for which the name sp. nov. is proposed. The type strain is strain SST-45 (=JCM 13812=NRRL B-24464).

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2007-07-01
2019-10-18
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vol. , part 7, pp. 1391-1395

A table showing the cellular fatty acid composition of strain SST-45 and the type strain of , DSM 12652 , is available hereas an Acrobat PDF file.



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