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美国Cyanamid公司经美国环境保护署(EPA)批准,允许其对一种新型的遗传重组生物杀虫剂进行田间试验。这种生物杀虫剂是经遗传改造的苜蓿银纹夜蛾核多角体病毒(V8EG.TDEL-AaIT)。此项田间试验允许在12个州对棉花、蔬菜和烟草进行有限制的试验。这种杆状病毒是用从北非蝎子Androtonus australis获得的昆虫特异性毒素基因修饰的,可加速昆虫的死亡。 “天然的杆状病毒,给人们提供了一种防治害虫的适宜方法,但通常需要4～5天才能使害虫停止进食,但在这段时间内害虫足以对作物造成明显的危害,”Lantz Crawley博士,Cyanamid农产品研究组的副主任说。“通过对杆状病毒基因组成的改造,我们期望其对目的昆虫的防治作用要比其天然同类物快60%。”
Cyanamid, a U.S. company, has been approved by the U.S. Environmental Protection Agency (EPA) to allow field trials of a new type of genetically engineered recombinant biopesticide. This biopesticide is the genetically modified Autographa californica nuclear polyhedrosis virus (V8EG.TDEL-AaIT). This field trial allows limited testing of cotton, vegetables and tobacco in 12 states. This baculovirus has been modified with insect-specific toxins obtained from the North American scorpion Androtonus australis to accelerate insect death. “Natural baculoviruses provide people with a suitable way to control pests but it usually takes 4 to 5 days to stop the pests, but the pests are sufficient to cause significant damage to the crops during this time, Lantz Crawley, Ph.D., deputy director of Cyanamid Agri-Products Research Group. ”Through the reorganization of the baculovirus genome, we expect its control of insects of interest to be about 60% faster than its natural counterpart.“ ”