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首页> 外文期刊>The Journal of General and Applied Microbiology >Pedobacter kyungheensis sp. nov., with ginsenoside converting activity
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Pedobacter kyungheensis sp. nov., with ginsenoside converting activity

机译：庆多氏杆菌十一月，具有人参皂甙转化活性

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摘要

The Gram-negative, aerobic, non-motile, non-spore forming, and rod-shaped bacterium designated as THG-T17~T was isolated from the soil of a ginseng field of Pocheon in Korea, and its taxonomic position was investigated by using a polyphasic approach. The growth of strain THG-T17~T occurred at 4-40°C and pH 4.0-9.0 with 1-2% (w/v) NaCI on nutrient agar. Strain THG-T17~T displayed p-glucosidase activity that was responsible for its ability to transform ginsenoside Rb1 (one of the dominant ginsenosides of ginseng) to compound F2 via gypenoside XVII. On the basis of 16S rRNA gene sequence similarity, strain THG-T17~T was shown to belong to the genus Pedobacter and was related to Pedobacter soli 15-51~T (98.8%), Pedobacter sandarakinus DS-27~T (98.0%) and Pedobacter terrae DS-57~T (98.1%). The G+C content of the genomic DNA was 42.4 mol%. The DNA-DNA relatedness values between strain THG-T17~T and its phylogenetically closest neighbors were below 14%. Phenotypic and chemotaxonomic data, especially analysis of cellular fatty acid, supported the affiliation of strain THG-T17~T to the genus Pedobacter. The results of genotyping and biochemical tests showed strain THG-T17~T to be differentiated geno-typically and phenotypically from the recognized species of the genus Pedobacter. Therefore, the novel isolate represents a novel species, for which the name Pedobacter kyungheensis sp. nov. is proposed, with the type strain THG-T17~T (=KACC 16221~T = LMG 26577~T).
机译：从韩国抱川市人参田土壤中分离出革兰氏阴性，好氧，无运动，无芽孢的杆状细菌，命名为THG-T17〜T，并利用多相方法。在营养琼脂上，THG-T17〜T菌株的生长发生在4-40°C和pH 4.0-9.0的条件下，含有1-2％（w / v）的NaCl。 THG-T17〜T菌株显示p-葡萄糖苷酶活性，这是其通过人参皂苷XVII将人参皂苷Rb1（人参的主要人参皂苷之一）转化为化合物F2的能力的原因。根据16S rRNA基因序列相似性，THG-T17〜T菌株属于Pedobacter属，与土壤单歧杆菌15-51〜T（98.8％），Sandarakinus DS-27〜T菌株（98.0％）有关。 ）和Terrapedobacter terrae DS-57〜T（98.1％）。基因组DNA的G + C含量为42.4mol％。 THG-T17〜T菌株与其系统发育最接近的邻居之间的DNA-DNA相关性值低于14％。表型和化学分类数据，特别是细胞脂肪酸的分析，支持THG-T17〜T菌株与Pedobacter属的隶属关系。基因分型和生化测试的结果表明，THG-T17〜T菌株与公认的Pedobacter属在基因型和表型上有所区别。因此，新分离株代表一种新物种，其名称为Pedobacter kyungheensis sp。十一月建议使用THG-T17〜T型（= KACC 16221〜T = LMG 26577〜T）。

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