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新种,一种从中性盐土中分离得到的中度嗜盐细菌。

sp. nov., a moderately halophilic bacterium isolated from saltern soil.

机构信息

Department of Microbial and Nano Materials, College of Science and Technology, Mokwon University, 88 Doanbuk-ro, Seo-gu, Daejeon 35349, Republic of Korea.

Institute of Microbial Ecology and Resources, Mokwon University, 88 Doanbuk-ro, Seo-gu, Daejeon 35349, Republic of Korea.

出版信息

Int J Syst Evol Microbiol. 2019 Oct;69(10):3121-3127. doi: 10.1099/ijsem.0.003599.

Abstract

A Gram-stain-positive, moderately halophilic bacterium, designated strain BH258, was isolated from solar saltern sediment sampled at Shinan in the Republic of Korea. Cells of strain BH258 were found to be strictly aerobic, motile, endospore-forming rods which could grow at 15-45 °C (optimum, 35 °C), at pH 5.5-9.0 (pH 7.0) and at salinities of 0.5-20 % (w/v) NaCl (7-10%). Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain BH258 belongs to the genus , showing highest sequence similarity to BH30097 (96.1 %), YIM 93624 (95.9 %), B6B (95.6 %) and WSY08-1 (95.1 %). The predominant isoprenoid quinone was identified as menaquinone-7, and the cell-wall peptidoglycan was found to contain -diaminopimelic acid as the diagnostic diamino acid. The major fatty acids were identified as anteiso-C, iso-C, anteiso-C and iso-C. The major polar lipids were identified as phosphatidylglycerol, diphosphatidylglycerol and three unidentified phospholipids. The DNA G+C content of this novel isolate was determined to be 37.35 mol%. On the basis of the results of phylogenetic, phenotypic and chemotaxonomic analyses in this study, strain BH258 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is BH258 (=KACC 18680=NBRC 111875).

摘要

一株革兰氏阳性、中度嗜盐的细菌,被命名为 BH258 菌株,是从韩国新南的太阳能盐田沉积物中分离得到的。BH258 菌株的细胞是严格需氧、运动、能形成芽孢的杆状菌,能在 15-45°C(最佳温度 35°C)、pH5.5-9.0(pH7.0)和 0.5-20%(w/v)NaCl(7-10%)的盐度下生长。基于 16S rRNA 基因序列的系统发育分析表明,菌株 BH258 属于 属,与 BH30097(96.1%)、YIM 93624(95.9%)、B6B(95.6%)和 WSY08-1(95.1%)的序列相似度最高。主要的异戊烯醌是menaquinone-7,细胞壁肽聚糖被发现含有 -二氨基庚二酸作为诊断二氨基酸。主要脂肪酸为 anteiso-C、iso-C、anteiso-C 和 iso-C。主要极性脂类为磷脂酰甘油、双磷脂酰甘油和三种未鉴定的磷脂。该新分离株的 DNA G+C 含量为 37.35mol%。基于本研究中的系统发育、表型和化学分类分析结果,菌株 BH258 被认为代表了 属的一个新种,建议将其命名为 sp. nov.。其模式菌株为 BH258(=KACC 18680=NBRC 111875)。

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