天津农学院学报 ›› 2025, Vol. 32 ›› Issue (6): 8-12.doi: 10.19640/j.cnki.jtau.2025.06.002

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肺炎克雷伯氏菌16S rRNA基因遗传演化关系分析

王永贞, 吴定洲, 冉恒东, 刘燕霏通信作者, 杨建德通信作者   

  1. 天津农学院 动物科学与动物医学学院 天津市农业动物繁育与健康养殖重点实验室,天津 300392
  • 收稿日期:2022-09-29 发布日期:2025-12-26
  • 通讯作者: 刘燕霏(1970—),女,副教授,硕士,研究方向为预防兽医学。E-mail:674383573@qq.com;杨建德(1969—),男,教授,博士,研究方向为预防兽医学。E-mail:jiandeyang@126.com。
  • 作者简介:王永贞(2001—), 男, 本科在读, 研究方向:生物信息学。E-mail:2102388116@qq.com。
  • 基金资助:
    天津市自然科学基金(07BJC16000)

Genetic evolution analysis of 16S rRNA gene in Klebsiella pneumoniae

Wang Yongzhen, Wu Dingzhou, Ran Hengdong, Liu YanfeiCorresponding Author, Yang JiandeCorresponding Author   

  1. Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300392, China
  • Received:2022-09-29 Published:2025-12-26

摘要: 为探索肺炎克雷伯氏菌(Klebsiella pneumoniae, Kp)的遗传演化关系, 试验采用生物信息学方法, 用本实验室分离出的两株Kp的Genbank号在NCBI官网进行Blast查询, 下载来自不同地区的26株Kp的16S rRNA基因序列, 对齐剪裁后进行同源性比较并构建系统进化树。结果表明:Kp形成了多国间广泛传播, 同一国家的Kp无明显的区域聚集现象。人口大国的Kp传播更频繁, 如中国和美国的菌株与多国菌株亲缘关系接近, 且距离在一定程度上影响亲缘关系远近。人口迁移大国巴基斯坦的菌株与丹麦、德国、荷兰菌株关系密切, 澳大利亚的菌株与美国菌株关系密切。所选参考菌株起源于共同的祖先, 本研究结果为防控Kp传播提供了参考依据。

关键词: 肺炎克雷伯氏菌, 遗传演化, 进化树, 同源性

Abstract: In order to explore the genetic evolution relationship of Klebsiella pneumoniae(Kp), bioinformatics method was used in the experiment. The Genbank numbers of two Kp strains isolated in our laboratory were used for Blast query on the official website of NCBI. The 16S rRNA gene sequences of 26 Kp strains from different regions were downloaded, aligned and clipped, and the homology was compared and the phylogenetic tree was constructed. The results showed that Kp spreaded widely among countries, and Kp in the same country had no obvious regional clustering phenomenon. Kp transmission was more frequent in populous countries. For example, China and the United States were closely related to strains from many countries, and distance affected the distance of kinship to a certain extent. Pakistan, a country of large migration population, was closely related to strains from Denmark, Germany and the Netherlands, and Australia was closely related to strains from the United States. The selected reference strains originated from a common ancestor, and the results of this study provide a reference for the prevention and control of the transmission of Kp.

Key words: Klebsiella pneumoniae, genetic evolution, evolutionary tree, homology analysis

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