为进一步调查研究棘胸蛙(Quasipaa spinosa)的烂皮病,从病蛙皮肤患处分离出一株优势生长菌,经菌落培养、革兰氏染色观察、质谱分析、16S r RNA基因PCR(聚合酶链式反应)产物测序、回归感染试验,鉴定该革兰氏阴性杆菌为恶臭假单胞菌(Pseud...为进一步调查研究棘胸蛙(Quasipaa spinosa)的烂皮病,从病蛙皮肤患处分离出一株优势生长菌,经菌落培养、革兰氏染色观察、质谱分析、16S r RNA基因PCR(聚合酶链式反应)产物测序、回归感染试验,鉴定该革兰氏阴性杆菌为恶臭假单胞菌(Pseudomonas putida)。药敏试验结果表明:该恶臭假单胞菌分离株对多黏菌素、左氧氟沙星、链霉素、庆大霉素和阿米卡星敏感,对复方新诺明和红霉素中度敏感,对氯霉素、头孢唑林、氨苄西林和青霉素耐药。该研究结果为棘胸蛙烂皮病的理论研究和防治实践提供一定的依据。展开更多
Since 1995,three viral isolates named RGV9506,RGV9807 and RGV9808 associated with frog mortality were isolated from farm-raised frogs (Rana grylio virus,RGV) in China.Both ultrastructural morphology and serological ch...Since 1995,three viral isolates named RGV9506,RGV9807 and RGV9808 associated with frog mortality were isolated from farm-raised frogs (Rana grylio virus,RGV) in China.Both ultrastructural morphology and serological characterisitics had shown that the RGV isolates belong to genus Ranavirus. The DNA sequence analysis of the 5′end of the major capsid protein(MCP) gene of RGV isolates by PCR amplification produced a 531bp fragment.DNA templates were prepared from cells infected with different RGV isolates and the specific primers designed were based on highly conserved region at the 5′ of the gene encoding Frog virus 3(FV3) MCP, which is the typical species of the genus Ranavirus.The PCR products indicate that the nucleotide sequence of MCP gene of the RGV9506,RGV9807 and RGV9808 showed 99.6%, 99.8% and 98.4% homology respectively with the corresponding region of the MCP gene of FV3.展开更多
[目的]分离并鉴定棘胸蛙歪头病病原。[方法]从患歪头病棘胸蛙(Quasipaa spinosa)体内分离到致病菌,分别采用4种不同方式进行人工感染试验,通过形态观察、生理生化试验、16S r DNA测序等方法进行鉴定,并采用抑菌圈研究该菌株对12种抗生...[目的]分离并鉴定棘胸蛙歪头病病原。[方法]从患歪头病棘胸蛙(Quasipaa spinosa)体内分离到致病菌,分别采用4种不同方式进行人工感染试验,通过形态观察、生理生化试验、16S r DNA测序等方法进行鉴定,并采用抑菌圈研究该菌株对12种抗生素的敏感性。[结果]除口服方式外,肌肉注射、皮肤损伤浸泡、皮肤不损伤浸泡感染途径均能使棘胸蛙发病并导致死亡,且对蛙有较强的致病性。通过生理生化试验和16S r DNA测序等方法鉴定致病菌为脑膜炎败血金黄杆菌(Chryseobacterium meningosepticum)。药敏试验结果表明:该致病菌对万古霉素、头孢哌酮、庆大霉素和红霉素高度敏感,而对吡哌酸、链霉素、四环素、诺氟沙星、青霉素、新霉素、林可霉素、先锋霉素不敏感。[结论]棘胸蛙歪头病病原为脑膜炎败血金黄杆菌。展开更多
文摘为进一步调查研究棘胸蛙(Quasipaa spinosa)的烂皮病,从病蛙皮肤患处分离出一株优势生长菌,经菌落培养、革兰氏染色观察、质谱分析、16S r RNA基因PCR(聚合酶链式反应)产物测序、回归感染试验,鉴定该革兰氏阴性杆菌为恶臭假单胞菌(Pseudomonas putida)。药敏试验结果表明:该恶臭假单胞菌分离株对多黏菌素、左氧氟沙星、链霉素、庆大霉素和阿米卡星敏感,对复方新诺明和红霉素中度敏感,对氯霉素、头孢唑林、氨苄西林和青霉素耐药。该研究结果为棘胸蛙烂皮病的理论研究和防治实践提供一定的依据。
文摘Since 1995,three viral isolates named RGV9506,RGV9807 and RGV9808 associated with frog mortality were isolated from farm-raised frogs (Rana grylio virus,RGV) in China.Both ultrastructural morphology and serological characterisitics had shown that the RGV isolates belong to genus Ranavirus. The DNA sequence analysis of the 5′end of the major capsid protein(MCP) gene of RGV isolates by PCR amplification produced a 531bp fragment.DNA templates were prepared from cells infected with different RGV isolates and the specific primers designed were based on highly conserved region at the 5′ of the gene encoding Frog virus 3(FV3) MCP, which is the typical species of the genus Ranavirus.The PCR products indicate that the nucleotide sequence of MCP gene of the RGV9506,RGV9807 and RGV9808 showed 99.6%, 99.8% and 98.4% homology respectively with the corresponding region of the MCP gene of FV3.
文摘[目的]分离并鉴定棘胸蛙歪头病病原。[方法]从患歪头病棘胸蛙(Quasipaa spinosa)体内分离到致病菌,分别采用4种不同方式进行人工感染试验,通过形态观察、生理生化试验、16S r DNA测序等方法进行鉴定,并采用抑菌圈研究该菌株对12种抗生素的敏感性。[结果]除口服方式外,肌肉注射、皮肤损伤浸泡、皮肤不损伤浸泡感染途径均能使棘胸蛙发病并导致死亡,且对蛙有较强的致病性。通过生理生化试验和16S r DNA测序等方法鉴定致病菌为脑膜炎败血金黄杆菌(Chryseobacterium meningosepticum)。药敏试验结果表明:该致病菌对万古霉素、头孢哌酮、庆大霉素和红霉素高度敏感,而对吡哌酸、链霉素、四环素、诺氟沙星、青霉素、新霉素、林可霉素、先锋霉素不敏感。[结论]棘胸蛙歪头病病原为脑膜炎败血金黄杆菌。
