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(iv) Why could parasite not survive in a transgenic tobacco plant?

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RNA interference effectively controls parasitic infections in transgenic crops.
Updated On: Jan 13, 2026
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Solution and Explanation

Transgenic tobacco plants generate double-stranded RNA (dsRNA) designed to disrupt essential nematode genes.

Key Mechanisms:
  • RNA Interference (RNAi): Nematodes ingest the plant-produced dsRNA, initiating RNAi within the organism. This process suppresses critical genes necessary for nematode survival and reproduction.
  • Gene Silencing: The inability to express vital genes prevents nematodes from carrying out essential cellular functions, ultimately causing their death.
  • Eco-friendly Approach: This method is specific to nematodes, differentiating it from chemical pesticides which can harm beneficial soil organisms.

Advantages:
  • Provides effective crop protection.
  • Decreases dependence on chemical pesticides.
  • Supports sustainable agricultural practices.

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