Explain the role of Agrobacterium as a vector in gene transfer.

Explanation

Vector mediated gene transfer is the indirect type of gene transfer in which a placed vector helps in gene transfer. The `T_(1)` plasmid from Agrobacteriumtumifacience has been used extensively in vector based gene transfer.`T_(1)` plasmid (Tumor inducing) a portion of which is T-DNA is a large size plasmid. When transferred into to plant genome of the infected cell and cause plant tumors (Crown gall). This bacterium has the natural ability to transfer T-DNA region of its plasmid into plant genome upon infection of cells at the wound site and this is called as natural genetic engineering of plants.