A novel strategy was adopted to prevent the infection of nematode was based on which process?

Options

A. Meloidegyne incognitia
B. Salmonella typhimurium
C. E.coli
D. Bacillus thuringiensis

Answer

To answer the question regarding the novel strategy adopted to prevent the infection of nematodes, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Nematode**: The question mentions a novel strategy to prevent nematode infection. The specific nematode referred to is Meloidogyne incognita, commonly known as the root knot nematode. This nematode is known for infecting the roots of plants, particularly the tobacco plant, leading to significant yield losses.

2. **Understand the Impact**: Meloidogyne incognita causes damage to the roots of plants, which can severely affect plant health and agricultural productivity. Understanding the impact of this nematode is crucial for developing effective prevention strategies.

3. **Explore the Strategy**: The novel strategy mentioned in the question is based on biotechnology, specifically RNA interference (RNAi). RNAi is a biological process where RNA molecules inhibit gene expression or translation, effectively silencing specific genes.

4. **Mechanism of RNA Interference**: RNA interference involves the introduction of double-stranded RNA (dsRNA) that is complementary to the messenger RNA (mRNA) of the target gene. This dsRNA binds to the mRNA, leading to its degradation and preventing the production of the corresponding protein. This mechanism can be employed to silence genes essential for the nematode's survival or reproduction.

5. **Conclusion**: The correct answer to the question is that the novel strategy to prevent the infection of nematodes is based on RNA interference (RNAi) technology, which is a powerful tool in biotechnology for controlling pests and diseases in plants.

### Final Answer:
The novel strategy adopted to prevent the infection of nematodes is based on RNA interference (RNAi) technology.