摘要
从甜橙病株的嫩梢皮组织提纯柑桔衰退病毒(Citrus Tristeza Virus,CTV),冰冻组织按每克鲜组织加入5ml0.1mol/L Tris缓冲液pH8.4(内含0.15％Triton x—100)进行匀浆。经几次差速离心和两次PEG(分子量6,000)沉淀后,将获得的病毒粗提液铺在不连续蔗糖密度梯度液上,HITACHI RPS_(40)T转头30,000r/m离心3小时,收集位于300mg/ml和400mg/ml梯度层之间的分离带,洗脱、浓缩后获得CTV提纯物。提纯的CTV粒子大小为1.000—1,500x12urn,与美国的CTV抗血清起阳性反应。
This paper deals with the Purification method of citrus tristeza virus (CTV) from infected sweet orange(Citrus sinensis[L]. Osbeck). The frozen and infected tissues were homogenized with 0.1mol/L Tris-buffer pH8.4 which contains 0.15% TritonX-100. After several differential centrifugations including two times of precipitation with PEG (MW 6,000), the supernatant was centrifuged by incontinuous sucrose density gradient of 200—400mg/ml and 600 mg/ml at 30,000 r/m (Hitachi, RPT 40 rot) for 3 hours. Then the band is collected in 300 mg/ml. After one cycle of differential centrifugation, the supernatant is the purified CTV preparation. The purified virus is apparently filamentous-shaped particles of 1000-1500×12 nm size with PTA negative staining.
出处
《病毒学杂志》
CSCD
1990年第3期312-316,共5页
关键词
柑桔
衰退病毒
提纯
Citrus Tristeza Virus Purification
