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Biotechnology: Principles and Processes
Agrobacterium as Vector
1 question from 1 paper, each with its answer.
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Concepts tested
- Ti plasmid as plant vector
All Questions
2003 AIPMT 1 question
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Which one of the following bacteria has found extensive use in genetic engineering work in plants : -Agrobacterium tumefaciens is a soil bacterium that causes crown gall in many dicot plants. It transfers a piece of DNA (T-DNA) from its Ti (tumour-inducing) plasmid into the plant genome.
Scientists disarm the Ti plasmid by removing its tumour-causing genes and insert useful genes into the T-DNA. The bacterium then delivers these genes into plant cells, producing transgenic plants.
So Agrobacterium is called a natural genetic engineer of plants.
Clostridium, Xanthomonas and Bacillus coagulans are not used for this purpose.
So the bacterium is Agrobacterium tumefaciens.