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首页> 外文期刊>Antonie van Leeuwenhoek: Journal of Microbiology and serology >Streptosporangium sonchi sp nov and Streptosporangium kronopolitis sp nov., two novel actinobacteria isolated from a root of common sowthistle (Sonchus oleraceus L.) and a millipede (Kronopolites svenhedind Verhoeff)
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Streptosporangium sonchi sp nov and Streptosporangium kronopolitis sp nov., two novel actinobacteria isolated from a root of common sowthistle (Sonchus oleraceus L.) and a millipede (Kronopolites svenhedind Verhoeff)

机译：链霉菌属孢子菌和链球菌属孢子菌，两种新的放线菌，从普通w（Sonchus oleraceus L.）和千足虫（Kronopolites svenhedind Verhoeff）的根中分离出来。

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摘要

Two novel actinobacteria, designated strains NEAU-QS7(T) and NEAU-ML10(T), were isolated from a root of Sonchus oleraceus L. and a Kronopolites svenhedind Verhoeff specimen, respectively, collected from Wuchang, Heilongjiang Province, China. A polyphasic study was carried out to establish the taxonomic positions of these strains. The two strains were observed to form abundant aerial hyphae that differentiated into spherical spore vesicles. The phylogenetic analysis based on the 16S rRNA gene sequences of strains NEAU-QS7(T) and NEAU-ML10(T) showed that the two novel isolates exhibited 99.7 % 16S rRNA gene sequence similarity with each other and that they are most closely related to Streptosporangium shengliense NEAU-GH7(T) (99.1, 99.0 %) and Streptosporangium longisporum DSM 43180(T) (99.1, 99.0 %). However, the DNA-DNA hybridization value between strains NEAU-QS7(T) and NEAU-ML10(T) was 46.5 %, and the values between the two strains and their closest phylogenetic relatives were also below 70 %. With reference to phenotypic characteristics, phylogenetic data and DNA-DNA hybridization results, the two strains can be distinguished from each other and their closest phylogenetic relatives. Thus, strains NEAU-QS7(T) and NEAU-ML10(T) represent two novel species of the genus Streptosporangium, for which the names Streptosporangium sonchi sp. nov. and Streptosporangium kronopolitis sp. nov. are proposed. The type strains are NEAU-QS7(T) (=CGMCC 4.7142(T) =DSM 46717(T)) and NEAU-ML10(T) (=CGMCC 4.7153(T) =DSM 46720(T)), respectively.
机译：分别从Sonchus oleraceus L.和Kronopolites svenhedind Verhoeff标本的根中分离出两个新的放线菌，分别命名为NEAU-QS7（T）和NEAU-ML10（T），从中国黑龙江省武昌采集。进行了多相研究以建立这些菌株的分类位置。观察到这两个菌株形成丰富的气生菌丝，其分化成球形孢子囊泡。根据菌株NEAU-QS7（T）和NEAU-ML10（T）的16S rRNA基因序列进行的系统进化分析表明，这两个新分离株彼此显示99.7％的16S rRNA基因序列相似性，并且与它们之间的关系最为密切升链链球菌NEAU-GH7（T）（99.1，99.0％）和长链球菌DSM 43180（T）（99.1，99.0％）。然而，菌株NEAU-QS7（T）和NEAU-ML10（T）之间的DNA-DNA杂交值为46.5％，并且两个菌株及其最亲近的亲缘关系之间的值也低于70％。参考表型特征，系统发育数据和DNA-DNA杂交结果，可以区分这两个菌株及其最亲近的亲缘种。因此，菌株NEAU-QS7（T）和NEAU-ML10（T）代表链霉菌属的两个新物种，其名称为链霉菌属sonchi sp。十一月和链霉菌性支气管炎sp。十一月被提议。类型菌株分别为NEAU-QS7（T）（= CGMCC 4.7142（T）= DSM 46717（T））和NEAU-ML10（T）（= CGMCC 4.7153（T）= DSM 46720（T））。

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