ABSTRACT
Prawn white spot syndrome is caused by the pathogen prawn white spot syndrome virus (WSSV). VP19 is a vesicle membrane protein of WSSV. HyNPV (Hybrid of AcNPV and BmNPV) constructed by the recombination of BmNPV and AcNPV is a new hybrid virus having both of their advantages. The recombinant transfer vector pBlueBicHisC-vp19 and recombinant baculovirus HyNPV-VP19 were constructed on the basis of the successful cloning of VP19. Newly-molted silkworms Bombyx mori of fifth instar were inoculated by the recombinant virus. SDS-PAGE and Western blotting analysis showed a specific band, about 21kD, which was consistent with the expectation suggesting that the WSSV-VP19 gene was successfully expressed in silkworm bodies.
Subject(s)
Animals , Baculoviridae , Genetics , Metabolism , Bombyx , Genetics , Metabolism , Virology , Genetic Vectors , Penaeidae , Virology , Recombinant Fusion Proteins , Genetics , Viral Envelope Proteins , Genetics , Metabolism , Virus Replication , White spot syndrome virus 1 , GeneticsABSTRACT
Chromosomal virulence genes acvB, abvA, chvA of Agrobacterium tumefaciens were cloned with the technique of transposon 5 insertion. The chromosome genes are necessary for Agrobacterium tumfaciens absorbing to cell ular surface of plant, the adherence reaction can't be executed and result in losing the toxicity if mutations are occurred in some chromosome genes. The chromosome toxicity gene is inactivated due to transposon Tn5 be inserted and the accept ant cell infected with Agrobacterium tumefaciens can't cause tumor ultimately. This article briefly introduces the research way of thinking and strategy of this technique and the important roles of every gene, which are taken of in the process of T-DNA's form, transfer, integration, and expression etc. This article also gives a presumption to T-DNA's transport: The plant cell wall's porin may be T-DNA's natural channel.