A gram-negative, rod-shaped flagellated bacterium responsible for crown gall tumor in plants. Following infection, the TI plasmid from the bacterium becomes integrated into the host plant's DNA and the presence of the bacterium is no longer necessary for the continued growth of the cell. This bacterium is now used to deliberately transfer genetic material into plants through biotechnology.
The bacterium which causes crown gall of dicot plants. It inserts its own Ti plasmid DNA into the host plant DNA. The inserted DNA produces growth hormones which result in the tumor and provides a habitat for the bacteria. This is an example of natural genetic engineering. The Ti plasmid can be used as a transformation vector.
A bacterium that causes crown gall disease in some plants. The bacterium characteristically infects a wound, and incorporates a segment of Ti plasmid DNA into the host genome. This DNA causes the host cell to grow into a tumor-like structure that synthesizes specific opines that only the pathogen can metabolize. This DNA-transfer mechanism is exploited in the genetic engineering of plants and is used to deliberately transfer genetic material.
a bacterium used in the process of creating genetically modified plants.
A naturally occurring soil bacterium that is capable of inserting DNA (genetic information) into plants. Used in agricultural biotechnology to carry transgenes into plants.
The soil bacterium which, when containing the Ti plasmid, is able to form crown galls on a number of dicotyledonous plant species.
Agrobacterium tumefaciens is the causal agent of Crown Gall disease (the formation of tumours) in over 140 species of dicot. It is a rod shaped, gram negative bacteria (Smith et al., 1907). Symptoms are caused by the insertion of a small segment of DNA (known as the T-DNA, for 'transfer DNA') into the plant cell, which is incorporated at a semi-random location into the plant genome.
