1887

Abstract

An aerobic, Gram-stain-negative, yellow-pigmented bacterium, designated strain ATAX6-5, was isolated from a marine red alga, , in South Korea. Cells were non-motile rods showing catalase- and oxidase-positive reactions. Growth of strain ATAX6-5 was observed at 5–35 °C (optimum, 30 °C), at pH 6.0–9.5 (optimum, pH 7.0) and in the presence of 0–6.0 % (w/v) NaCl (optimum, 2 %). Ubiquinone-10 was detected as the sole isoprenoid quinone and Cω7, C and C 6 were identified as the major cellular fatty acids. Diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, sphingoglycolipid, phosphatidylcholine, an unknown phospholipid and four unknown glycolipids were detected as polar lipids. The G+C content of the genomic DNA was 60.4 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain ATAX6-5 formed a tight phylogenic lineage with JAMH 0132 with a 100 % bootstrap value. Strain ATAX6-5 was most closely related to JAMH 0132 with a 96.9 % 16S rRNA gene sequence similarity. Based on phenotypic, chemotaxonomic and molecular features, strain ATAX6-5 clearly represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is ATAX6-5 (=KACC 18993=JCM 31719). An emended description of the genus is also proposed.

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2017-10-01
2019-12-13
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