关于菌 (Streptococcus thalassemiae) sp. 的描述 nov. 一种从人类血液中分离出来的细菌
Fatou Samba Diouf1,2, Mamadou Beye2,3, Mapenda Gaye1,2
1Aix Marseille University, IRD, AP-HM, MEPHI, Marseille, France.
International journal of microbiology
|August 10, 2023
概括
一种新型细菌菌株,马赛-Q2617,在一个患有重型沙拉西米亚的患者中被发现. 这种名为Streptococcus thalassemiae的新型链球菌物种通过全面的基因组和表型分析来表征.
科学领域:
- 微生物学 微生物学
- 细菌学 细菌学是一门学科.
- 基因组学就是基因组学.
背景情况:
- 血液中的细菌 (细菌血症) 表明需要诊断的严重异常.
- 一名患有重症血症的患者接受了移植手术,出现了为期四天的发烧,需要进行血液培养.
研究的目的:
- 鉴定和描述一种新型细菌菌株,这种细菌株是从患有thalassemia major. major的患者中分离出来的.
- 为了确定新分离的菌株的分类学分类,马赛-Q2617.
主要方法:
- 用于菌株表征的过程中使用了表型,遗传学和基因组分析.
- 使用16S rRNA基因测序和平均核酸标识 (ANI) 来进行遗传学定位.
- 进行了DNA-DNA杂交,以评估与已知的物种的遗传相关性.
主要成果:
- 菌株马赛-Q2617是一种属于Streptococcus属的グラム阳性,不运动,不菌形成的菌.
- 遗传学分析显示16S rRNA基因与Streptococcus mitis具有很高的相似性 (99.94%),但ANI (92.9%) 和DNA-DNA杂交 (50.2%) 值支持其区别.
- 这种菌株的基因组大小为2.02 Mbp,含有40.5%mol%的G+C.
结论:
- 马赛-Q2617菌株代表了Streptococcus属内的新物种.
- 这种新物种的拟议名称是Streptococcus thalassemiae sp. nov.,使用马赛-Q2617T菌株作为类型菌株.
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