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Question
Biology
Posted 7 months ago
You have identified a gene encoding the protein involved in the rate limiting step in vitamin E biosynthesis. How would you create a transgenic plant producing large quantities of vitamin E in its seeds?
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Answer from Sia
Posted 7 months ago
Answer
To create a transgenic plant producing large quantities of vitamin E in its seeds, you would need to insert a gene encoding the protein that catalyzes the rate-limiting step of vitamin E biosynthesis into the plant genome and ensure its expression is targeted to the seeds.
Solution
a
Identify the gene encoding the rate-limiting enzyme: Use bioinformatics tools to confirm the identity of the gene and design appropriate primers for its amplification
b
Clone the gene: Amplify the gene using PCR and clone it into a suitable plant expression vector that contains a seed-specific promoter to ensure the gene is expressed in the seeds
c
Transform the plant: Use a method such as Agrobacterium-mediated transformation or gene gun to introduce the vector into the plant cells
d
Select transgenic plants: Grow the transformed cells into plants and select those that have successfully integrated the transgene using molecular techniques like PCR and Southern blotting
e
Breed and test the transgenic plants: Cross the transgenic plants with high-yielding varieties if necessary, and test the resulting progeny for increased vitamin E content in the seeds
Key Concept
Transgenic plant production
Explanation
Creating a transgenic plant involves inserting a gene of interest into the plant genome and ensuring its expression in the desired tissue, in this case, the seeds, to enhance the production of a specific metabolite like vitamin E.

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