Biofertilizers & Plant Vectors

Ti Plasmids

The Tumor inducing or Ti plasmid is present in the bacterium Agrobacterium tumefaciens. It's extensively used now as a cloning vector to deliver desirable genes to the host plant to get transgenic plants. A tumour converting plasmid is a plasmid set up in pathogenic species of Agrobacterium, including A. tumefaciens, A. rhizogenes, A. rubi and A. vitis. Evolutionarily, the Ti plasmid is part of a family of plasmids carried by numerous species of Alpha proteome bacterial. Ti plasmids carry genes for elaboration of two DNA conjugation systems, one( Tra/ Trb) responsible for conjugative transfer of the Ti plasmid and the alternate( VirB/ VirD4) devoted to the delivery of a segment of the Ti plasmid called the T- DNA as well as several effector proteins to plant cells during the infection