Question:medium

(ii) Name the vector that is used to introduce nematode-specific genes into the host plant (tobacco).

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Agrobacterium tumefaciens is a natural genetic engineer widely used in transgenic research.
Updated On: Jan 13, 2026
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Solution and Explanation

The vector employed is Agrobacterium tumefaciens. Key Features:
  • Ti Plasmid: This bacterium possesses a tumor-inducing (Ti) plasmid, which has been modified to incorporate nematode-specific genes for secure transmission.
  • RNAi Technology: The integrated genes generate double-stranded RNA, initiating RNA interference (RNAi) to suppress essential nematode genes.
  • Eco-friendly Protection: Genetically modified tobacco plants exhibit resistance to nematode infestation, eliminating the requirement for chemical pesticides.
Applications:
  • Agrobacterium-mediated gene transfer is a common method for developing transgenic plants with enhanced characteristics, such as resistance to pests and diseases.
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