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How Did the Process of Rna Interference Help to Control the Nematode from Infecting the Roots of Tobacco Plants? - Biology

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How did the process of RNA interference help to control the nematode from infecting the roots of tobacco plants?

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Solution

RNA Interference (RNAi) is a gene-silencing process that blocks the expression of genes in the parasite when it enters the host's body.

  • RNAi is a method adopted to prevent infestation of roots of tobacco plants by a nematode Meloidegyne incognitia.

  • In RNAi, a complementary RNA binds to mRNA to form a ds RNA that cannot translate and hence, its expression is blocked (Silencing).

  • In this process, nematode-specific genes (DNA) are introduced in the host plant.

  • This introduced DNA forms both sense and anti-sense RNA.

  • These two strands, being complementary to each other, bend and form ds RNA, leading to RNA interference.

  • mRNA of nematode is thus silenced and the parasite cannot survive in the transgenic host.

    Thus, through the above method, tobacco plants can be protected from nematode attack

Concept: Biotechnological Applications in Agriculture
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