The process of RNA interference (RNA i ) involves silencing of a specific m RNA due to a complementary dsRNA molecule that binds to and prevents translation of the m RNA, also referred as RNA silencing. Related Theory In RNAi, the source of this complementary RNA could be from an infection by viruses having RNA genomes or transposons. Using Agrobacterium vectors, nematode-specific genes were introduced into the host plant such that it produced both sense and antisense RNA in the host cells. Two RNAs being complementary to each other formed a double stranded RNA (dsRNA) and thus, silenced the specific mRNA of the nematode. The process of RNA interference was adopted to prevent the infection of tobacco plants by Meloidegyne incognita.