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基于基因组分析重新分类一些exiguobacterium物种

Shuang Wang^1,2, Awalagaway Dhulappa³, Syed Raziuddin Quadri⁴

¹Heilongjiang Academy of Black Soil Conservation and Utilization/Heilongjiang Black Soil Conservation Engineering and Technology Research Center, Harbin, 150086, People's Republic of China.

Current microbiology

|May 22, 2024

概括

这项研究根据基因组分析重新分类了四种Exiguobacterium物种. 高平均核酸标识 (ANI) 和数字DNA-DNA杂交 (dDDH) 值支持这些细菌的分类学变化.

科学领域:

微生物学微生物学
细菌的分类学细菌的分类学
基因组学就是基因组学.

背景情况:

埃克西瓜细菌 (Exiguobacterium) 属包括格拉姆阳性,选择性无氧细菌.
之前的研究指出,一些Exiguobacterium物种之间存在很高的16S rRNA基因相似性,这促使进一步的分类学调查.

研究的目的:

进行全面的基因组分析,以准确地分类Exiguobacterium物种的分类学.
用平均核酸标识 (ANI) 和数字DNA-DNA杂交 (dDDH) 来评估物种划分.

主要方法:

进行了全基因组的比较分析.
计算了核酸标识 (ANI) 的平均值.
数字DNA-DNA杂交 (dDDH) 值被确定为关键物种对.

主要成果:

对于特定的Exiguobacterium对,NI和DDH值超过了已确定的值 (95-96%NI,70%DDH).
在Exiguobacterium enclense中,与E. indicum.有很高的相似性.
此外,Exiguobacterium aquaticum,E. soli和E. sibiricum与E. mexicanum,E. antarcticum和E. artemiae分别具有很高的基因组相关性.

结论:

建议重新分类E. enclense作为E. indicum.的后来的异型同义词.
建议将E. aquaticum,E. soli和E. sibiricum分别重新归类为E. mexicanum,E. antarcticum和E. artemiae的后来的异型同义词.
基因组分析为细菌分类学和物种定义提供了一个强大的框架.

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