›› 2015, Vol. 42 ›› Issue (4): 852-858.doi: 10.16431/j.cnki.1671-7236.2015.04.012

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Isolation, Identification of Mink Proteus mirabilis and Sequence Analysis of 16S rRNA Gene

WANG Jian-ke, CHENG Yue-ning, YI Li, ZHAO Hang, LIN Peng, TONG Ming-wei, CHENG Shi-peng   

  1. Jilin Provincial Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Science, Chinese Academy of Agricultural Sciences, Changchun 130122, China
  • Received:2014-10-08 Online:2015-04-20 Published:2015-05-05

Abstract: One strain pathogenic bacteria named PMSD was isolated from the infected mink in Liaoning province, and identified as Proteus mirabilis by morphological observation and VITEK 2 Compact System from bioMerieux. Antibiotic susceptibility test of PMSD showed that it was highly sensitive to aminoglycosides and quinolones while resistant to beta-lactam and sulfonamides. The 16S rRNA gene of 1 504 bp was amplified by PCR from PMSD strain, which was deposited in GenBank (accession No. KM229530). BLAST analysis showed that the gene shared more than 99% homology with the sequences of Proteus mirabilis. Furthermore, the phylogenetic tree analysis of 16S rRNA gene indicated that PMSD 16S rRNA gene shared higher homology with other 20 Proteus mirabilis strains available in GenBank. The homologies of nucleotide was from 98.9% to 99.7%. The highest homology was 99.7% with BB2000 strain, HI4320 strain, B1 strain and FCC141 strain. This study provided a foundation for the prevention and control of mink diseases caused by Proteus mirabilis.

Key words: mink; Proteus mirabilis; isolation and identification; 16S rRNA

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