Genetically engineered microorganism used successfully in bioremediation of oil spills is:

Options

A. Trichoderma
B. Xanthomonas
C. Bacillius
D. Pseudomonas

Answer

**Step-by-Step Solution:**

1. **Understanding Bioremediation**:
- Bioremediation is a process that uses microorganisms to degrade environmental contaminants into less harmful substances. It is particularly effective in cleaning up oil spills.

2. **Identifying the Options**:
- The question provides four options: Trichoderma, Xanthomonas, Bacillus, and Pseudomonas. We need to evaluate which of these microorganisms is genetically engineered and used in bioremediation of oil spills.

3. **Evaluating Each Option**:
- **Trichoderma**: This is primarily used as a biocontrol agent to protect plants from soil-borne diseases. It does not play a significant role in oil spill remediation.
- **Xanthomonas**: This genus is known for producing xanthine gum, which is used in food. It is not associated with oil spill bioremediation.
- **Bacillus**: While Bacillus species, such as those producing Bt toxin, are used in pest control and agriculture, they are not the primary microorganisms used for oil spill bioremediation.
- **Pseudomonas**: This is the correct answer. Pseudomonas species are known for their ability to degrade various hydrocarbons, including those found in oil spills. They can convert harmful substances into biodegradable products.

4. **Conclusion**:
- After evaluating all options, the genetically engineered microorganism successfully used in the bioremediation of oil spills is **Pseudomonas**.

**Final Answer**: Pseudomonas

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