Streptomyces amphotericinicus sp nov., an amphotericinproducing actinomycete isolated from the head of an ant (Camponotus japonicus Mayr)
文献类型: 外文期刊
第一作者: Cao, Tingting
作者: Cao, Tingting;Mu, Shan;Lu, Chang;Zhao, Shanshan;Li, Dongmei;Yan, Kai;Xiang, Wensheng;Liu, Chongxi;Xiang, Wensheng
作者机构:
关键词: Streptomyces amphotericinicus sp nov.;Camponotus japonicus Mayr;polyphasic taxonomy;amphotericin;antifungal activity
期刊名称:INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY ( 影响因子:2.747; 五年影响因子:2.889 )
ISSN: 1466-5026
年卷期: 2017 年 67 卷 12 期
页码:
收录情况: SCI
摘要: A novel actinomycete, designated strain 1H-SSA8(T), was isolated from the head of an ant (Camponotus japonicus Mayr) and was found to produce amphotericin. A polyphasic approach was employed to determine the status of strain 1H-SSA8(T). Morphological and chemotaxonomic characteristics were consistent with those of members of the genus Streptomyces. The menaquinones detected were MK-9(H-6), MK-9(H-8) and MK-9(H-4). The phospholipid profile consisted of diphosphatidylglycerol, phosphatidylmethylethanolamine, phosphatidylethanolamine and phosphatidylinositol mannoside. The major fatty acids were identified as iso-C-16 : 0, C-16 : 0, C-15 : 0 and anteiso-C-15 : 0. Analysis of the 16S rRNA gene sequence showed that strain 1H-SSA8 T belongs to the genus Streptomyces with high sequence similarity to Streptomyces ramulosus NRRL B-2714(T) (99.2 %). Two tree-making algorithms based on 16S rRNA gene sequences showed that the isolate formed a phyletic line with Streptomyces himastatinicus ATCC 53653(T) (98.7 %). The MLSA utilizing partial sequences of the housekeeping genes (atpD, gyrB, recA, rpoB and trpB) also supported the position. However, evolutionary distances were higher than the 0.007 MLSA evolutionary distance threshold proposed for species-level relatedness. Moreover, the low level of DNA-DNA relatedness and phenotypic differences allowed the novel isolate to be differentiated from its most closely related strain S. ramulosus NRRL B-2714(T) and strain S. himastatinicus ATCC 53653(T). It is concluded that the organism can be classified as representing a novel species of the genus Streptomyces, for which the name Streptomyces amphotericinicus sp. nov. is proposed. The type strain is 1H-SSA8(T) (= CGMCC 4.7350(T) = DSM 103128(T)).
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