Describe the role of Agrobacterium tumefaciens in transforming a plant cell.
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According to Gelvin, Agrobacterium tumefaciens is a soil bacterium that occurs naturally and widespread. It can not only cause crown gal but also have the ability to introduce new genetic material into the plant cell.
T DNA which is located on the Ti plasmid is the genetic material that is newly introduced. Almost all bacteria have Ti Plasmid, which is a circular piece of DNA. The ability of Agrobacterium to change the plant's genetic makeup became the foundation for the transformation of plants.
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