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KMID : 0880220170550110850
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Journal of Microbiology
2017 Volume.55 No. 11 p.850 ~ p.855
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Spirosoma flavus sp. nov., a novel bacterium from soil of Jeju Island
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Elderiny Nabil
Lee Seung-Yeol
Park Sang-Kyu
Kang In-Kyu
Kim Myung-Kyum
Lee Dae-Sung
Ten Leonid N.
Jung Hee-Young
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Abstract
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A novel, Gram-staining negative, yellow pigmented bacterial strain, designated 15J11-2T, was isolated from soil sample on Jeju Island, Republic of Korea. The strain was subjected to a taxonomic study using a polyphasic approach. The strain was able to grow at temperature range from 10°C to 30°C, pH 7?8, and in presence of 0?1% (w/v) NaCl. Comparative 16S rRNA gene sequence analysis showed that strain 15J11-2T belongs to the genus Spirosoma and levels of 16S rRNA gene sequence similarity ranged from 91.5% to 89.8%. The genomic DNA G + C content of strain 15J11-2T was 46.0 mol%. The isolate contained phosphatidylethanolamine and an unidentified aminophospholipid as the main polar lipids, menaquinone MK-7 as the predominant respiratory quinone, and summed feature 3 (C16:1ω6c/C16:1ω7c; 39.4%), C16:1ω5c (27.1%), and C16:0 (13.0%) as the major fatty acids, which supported the affiliation of strain 15J11-2T to the genus Spirosoma. The results of physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain 15J11-2T from recognized Spirosoma species. On the basis of its phenotypic properties, genotypic distinctiveness, chemotaxonomic features, strain 15J11-2T represents a novel species of the genus Spirosoma, for which the name Spirosoma flavus sp. nov. is proposed. The type strain is 15J11-2T (= KCTC 52026T = JCM 31998T).
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KEYWORD
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Spirosoma, Bacteroidetes, soil bacteria
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