《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (10): 3077-3083.doi: 10.16431/j.cnki.1671-7236.2017.10.035

• 预防兽医 • 上一篇    下一篇

水貂源致病性黏质沙雷氏菌的分离鉴定与遗传进化分析

潘跃1, 温珊珊1, 赵丽丽2, 杨延1, 李思宇1, 张乘浩1, 葛俊伟1, 陈洪岩2   

  1. 1. 东北农业大学动物医学学院, 哈尔滨 150030;
    2. 中国农业科学院哈尔滨兽医研究所, 哈尔滨 150069
  • 收稿日期:2017-03-13 出版日期:2017-10-20 发布日期:2017-10-20
  • 通讯作者: 葛俊伟, 陈洪岩 E-mail:gejunwei@neau.edu.cn;chenhongyan@caas.cn
  • 作者简介:潘跃(1994-),女,黑龙江双鸭山人,本科,研究方向:动物微生物与免疫学,E-mail:2997081332@qq.com
  • 基金资助:

    东北农业大学大学生SIPT项目(201710224068);黑龙江省留学归国人员科学基金项目(LC2015006)

Isolation, Identification and Genetic Evolution Analysis of Mink Serratia marcescens

PAN Yue1, WEN Shan-shan1, ZHAO Li-li2, YANG Yan1, LI Si-yu1, ZHANG Cheng-hao1, GE Jun-wei1, CHEN Hong-yan2   

  1. 1. College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China;
    2. Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, China
  • Received:2017-03-13 Online:2017-10-20 Published:2017-10-20

摘要:

为确定水貂黏质沙雷氏菌的耐药状况、致病性及其遗传特征,本研究从黑龙江省患病死亡水貂中分离得到3株细菌,根据其形态特征、培养特性、生化试验及16S rRNA序列测定对分离菌进行鉴定;随后用K-B法测试分离株对常见的24种抗菌药的敏感性,并进行了致病性试验和遗传进化分析。结果显示,分离菌为黏质沙雷氏菌,对多种常用抗菌药物具有高度耐药性;可引起试验组小鼠100%死亡;分离株与来自活性污泥与火山堆积物环境的菌株遗传亲缘性最近。表明黑龙江省水貂中存在黏质沙雷氏菌的感染,分离株耐药现象较严重并具有很强的致病性,同时提示该菌株可能来源于环境中。本试验从水貂中分离得到致病性黏质沙雷氏菌为首次报道,研究结果可作为该菌感染水貂导致相关疾病的检测、鉴别和预防依据。

关键词: 水貂; 黏质沙雷氏菌; 分离鉴定; 遗传进化

Abstract:

In order to determine drug resistance, pathogenicity and genetic of the pathogenic bacteria in mink of Heilongjiang province, three strains were isolated from dead minks and identified. Based on colony morphology, microscopic characteristics, biochemical test and 16S rRNA sequencing. The antibiotic susceptibility to 24 antibiotics were detected by using standard K-B paper method, and virulence assay, phylogenetic analysis were carried out at the same time. The result showed that the isolates were highly tolerance to antibacterials, could cause 100% death of mice in experimental group and were closely related to strains from activated sludge and volcanic deposits. It showed that Serratia marcescens infection of mink existed in Heilongjiang province. Strains resistance phenomenon was serious and had a strong pathogenicity, and might be originated from the environment. It was the first time that the pathogenic Serratia marcescens isolated from the mink was reported. The results provided information for the detection, identification, diagnosis, treatment and prevention of related diseases.

Key words: mink; Serratia marcescens; isolation and identification; genetic evolution

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