Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, 99, Daehak-ro, Yuseong, Daejeon 34134, Republic of Korea.
Animal Disease Diagnostic Division, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gimcheon 39660, Gyeongsangbuk-do, Republic of Korea.
Int J Syst Evol Microbiol. 2020 Oct;70(10):5567-5575. doi: 10.1099/ijsem.0.004450. Epub 2020 Sep 14.
A polyphasic study was carried out to establish the taxonomic position of an acidophilic isolate designated MMS16-CNU292 (=JCM 32302) from pine grove soil, and provisionally assigned to the genus . On the basis of 16S rRNA gene sequence similarity, the strain formed a novel evolutionary lineage within and showed highest similarities to KCTC 9699 (98.75 %), IFO 15206 (98.74 %), NRRL B-1817 (98.61 %) and HKI 0315 (98.42 %), respectively. Strain MMS16-CNU292 possessed MK-9(H) and MK-9(H) as the major menaquinones, and a major amount of -diaminopimelic acid in the cell-wall peptidoglycan. The whole-cell hydrolysates were rich in galactose, glucose and mannose, and the polar lipids mainly consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, phosphatidylglycerol and phosphatidylinositol mannosides. The major fatty acids were anteiso-C-A, anteiso-C, and iso-C, and the DNA G+C content was 71.5 mol%. The strain exhibited antibacterial activity against a number of bacterial strains, and the activity was generally greater when grown in acidic conditions. The phylogenetic, chemotaxonomic and phenotypic properties enabled distinction of MMS16-CNU292 from related species, and thus the isolate should be recognized as a new species of the genus , for which the name sp. nov. (type strain=MMS16-CNU292=KCTC 49011=JCM 32302) is proposed.
进行了多相研究,以确定从松林土壤中分离出的嗜酸菌株 MMS16-CNU292(=JCM 32302)的分类地位,并暂时归入 属。基于 16S rRNA 基因序列相似性,该菌株在 属内形成了一个新的进化谱系,与 KCTC 9699(98.75%)、IFO 15206(98.74%)、NRRL B-1817(98.61%)和 HKI 0315(98.42%)的相似度最高。菌株 MMS16-CNU292 含有 MK-9(H)和 MK-9(H)作为主要的menaquinones,以及细胞壁肽聚糖中的大量 -二氨基庚二酸。全细胞水解产物富含半乳糖、葡萄糖和甘露糖,极性脂类主要由双磷脂酰甘油、磷脂酰乙醇胺、磷脂酰肌醇、磷脂酰甘油和磷脂酰肌醇甘露糖苷组成。主要脂肪酸为 anteiso-C-A、anteiso-C 和 iso-C,DNA G+C 含量为 71.5 mol%。该菌株对许多细菌菌株表现出抗菌活性,并且在酸性条件下生长时活性通常更大。系统发育、化学分类和表型特性使 MMS16-CNU292 与相关物种区分开来,因此该分离物应被确认为 属的一个新种,命名为 sp. nov.(模式株=MMS16-CNU292=KCTC 49011=JCM 32302)。