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Which one of the following is commonly used in transfer of foreign DNA into crop plants?
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- Meloidogyne incognita
- Agrobacterium tumefaciens
- Penicillium expansum
- Trichoderma harzianum
Correct Option: B
Agrobacterium tumefaciens is the causal agent of crown gall disease (the formation of tumours) in over 140 species of dicot. This disease caused by a DNA plasmid (Tiplasmid) carried by bacterium and transferred to the plant cells. Ti plasmid has widely used in plant engineering as a vector in order to inject gene in host plant to form transgenic plant.
