In order to provide a scientific basis for the control of Aeromonas allosaccharophila from Procambarus clarkii , a dominant strain was isolated from moribund P. clarkii in some farm in Hubei Province, and designated X...In order to provide a scientific basis for the control of Aeromonas allosaccharophila from Procambarus clarkii , a dominant strain was isolated from moribund P. clarkii in some farm in Hubei Province, and designated X1. It was preliminarily identified to be A. allosaccharophila through physiological-biochemical test. Further sequence analysis showed that 16S rDNA of this bacterium shared 90% identity with 16S rDNA of A. allosaccharophila , suggesting that it is A. allosaccharophila . Drug sensitivity test showed that isolate X1 was sensitive to doxycycline, cefotaxime, norfloxacin and gentamicin. In animal regression test, the bacterium the same as that from naturally-diseased P. clarkii could be isolated, with the same disease symptoms as well.展开更多
对来自广东韶关某猪场的疑似猪链球菌病病料进行分离鉴定,共分离到3株链球菌,对这3株链球菌进行了形态学观察、生化试验、16 S rRNA基因序列分析、猪链球菌2型的毒力基因检测及药敏试验。结果表明,其形态、染色、生化特性均符合猪链球...对来自广东韶关某猪场的疑似猪链球菌病病料进行分离鉴定,共分离到3株链球菌,对这3株链球菌进行了形态学观察、生化试验、16 S rRNA基因序列分析、猪链球菌2型的毒力基因检测及药敏试验。结果表明,其形态、染色、生化特性均符合猪链球茵的特点,测序后Blast同源性分析,证实3株菌株均为猪链球菌,用猪链球菌2型Cps2J引物进行PCR扩增,获得预期的459bp大小的目的片段。药敏试验结果表明,该菌对3种常用抗生素表现出敏感,对21种常用抗生素表现出耐药。展开更多
基金Supported by Special Fund for Technological Innovation in Hubei Province(2018ABA103)National Natural Science Foundation of China(31402343)Innovation Project of Wuhan Academy of Agricultural Sciences(CX201810)
文摘In order to provide a scientific basis for the control of Aeromonas allosaccharophila from Procambarus clarkii , a dominant strain was isolated from moribund P. clarkii in some farm in Hubei Province, and designated X1. It was preliminarily identified to be A. allosaccharophila through physiological-biochemical test. Further sequence analysis showed that 16S rDNA of this bacterium shared 90% identity with 16S rDNA of A. allosaccharophila , suggesting that it is A. allosaccharophila . Drug sensitivity test showed that isolate X1 was sensitive to doxycycline, cefotaxime, norfloxacin and gentamicin. In animal regression test, the bacterium the same as that from naturally-diseased P. clarkii could be isolated, with the same disease symptoms as well.
文摘对来自广东韶关某猪场的疑似猪链球菌病病料进行分离鉴定,共分离到3株链球菌,对这3株链球菌进行了形态学观察、生化试验、16 S rRNA基因序列分析、猪链球菌2型的毒力基因检测及药敏试验。结果表明,其形态、染色、生化特性均符合猪链球茵的特点,测序后Blast同源性分析,证实3株菌株均为猪链球菌,用猪链球菌2型Cps2J引物进行PCR扩增,获得预期的459bp大小的目的片段。药敏试验结果表明,该菌对3种常用抗生素表现出敏感,对21种常用抗生素表现出耐药。
