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山羊奇异变形杆菌的分离鉴定及16S rDNA和ZapA基因的PCR-RFLP分析

Chinese Journal of Veterinary Science(2011)

Cited 26|Views3
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Abstract
从发病山羊分离到5株病原菌,对分离株进行游散行为分析,生化试验、动物试验、药敏试验及16SrDNA和ZapA基因克隆测序,选用限制性内切酶对分离株16SrDNA和ZapA基因进行PCR-RFLP分析。结果表明分离株出现游散生长现象,对丁胺卡那霉素和复达欣敏感,小鼠LD50为2.500 0×107 CFU/mL~4.445 3×107 CFU/mL;分离株16SrDNA与奇异变形杆菌的同源率为99.5%~99.8%,ZapA基因与奇异变形杆菌的同源率为99.5%;PCR-RFLP分析发现,分离株酶切片段数目和大小与标准株相同。结果表明分离株是奇异变形杆菌,多态性较为单一。
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Key words
isolation,identification,PCR-RFLP,Proteus mirabilis
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