›› 1995, Vol. 38 ›› Issue (4): 407-413.

• 研究论文 • 上一篇    下一篇

粘虫颗粒体病毒的增效因子提高杆状病毒的感染

丁翠 邓塔 蔡秀玉   

  • 出版日期:1995-11-20 发布日期:1995-11-20

ENHANCEMENT OF BACULOVIRUS INFECTION BY THE SYNERGISTIC FACTOR OF A GRANULOSISVIRUS OF THE ARMYWORM

Ding Tsuey Deng Ta Tsai Xiuyu   

  • Online:1995-11-20 Published:1995-11-20

摘要: 一株美洲粘虫GV(增效品系)在东方粘虫幼虫上进行增殖,所获粘虫GV(PuGv-Ps>对东方粘虫NPV(PsNPV)、棉铃虫NPV(HaNPV)和黄地老虎NPV(AsNPV)进行增效试验。 实验结果证明PuGV-Ps对三种NPV都有明显的增效作用, 其中以对PsNPV为最强,增效率达55%一85%;对HaNPV为30%-80%;而对AsNPV只有15%-35%。用凝胶过滤技术从PuGV-Ps中分离增效因子PusF-Ps,其对PsNPV和A,NPV的增效作用亦同样明显,250μg的PuSF-Ps可以提高PsNPV的感染能力达80%。经ScPhadcf-150柱(1.6X 90)和使用四种标准蛋白(细胞色素c、胃蛋白酶、牛血清清蛋白和乳酸脱氢酶)测得PuSF-Ps的分子量为160 000左右。

关键词: 粘虫, 粘虫颗粒体病毒, 增效因子

Abstract: We have propagated Pseudaletis unipuncta granulosis virus (synergistic strain) in larvae of Pseudaletis separata and have conducted quantitative evaluation of the enhancement of the P. unipuncta granulosis virus-Ps (PuGV-Ps) on the NPVs of P. separata (Ps), Heliothis armigera (Ha) and Agrotis segetum (As). The results show the PuGV-Ps enhanced PsNPV, HaNPV and AsNPV infections in their original host insects. The high proportions (55%-85%, 30%-80%) of enhancement were observed in the PsNPV and HaNPV assays, and the median one (15%-35%) was obtained in the AsNPV-PsGV system. A synergistic factor (PuSF-Ps) has been isolated from the PuGV-Ps system using gel filtration technique. When PsNPV polyhedra were mixed with 250 ng PuSF-Ps, the value of enhancement increased by about 80%. The molecular weight of the synergistic factor was determined with Sephadex 150 column (1.6cm× 90cm) to be about 160k.

Key words: Pseudaletis separata, PuGV-Ps, PuSF-Ps