RNAi technique is helpful in preventing the infestation of roots in tobacco plants. This can be done by introduction of nematode-specific genes using the Agrobacterium vectors into the host plant. The introduction of DNA was such that it produced both sense and anti-sense RNA in the host cells. These two RNA s being complementary to each other formed a double standed (dsRNA) that initiated RNAi and thus, silenced the specific mRNA in the nematode. The consequence was that the parasite could not survive in transgenic host expressing specific interfering RNA. The transgenic plant therefore got itself protected from the parasite.
