Sensitivity to biological control of Agrobacterium vitis is related to its Ti plasmid

摘要

Crown gall caused by Agrobacterium vitis is a common disease of grapevine (Vitis vimfera) worldwide,Most V. vinifera cultivars are highly susceptible to and may be killed by crown gall. The disease hasbeen and continues to be an economic problem for grape growers. Typically, infections are initiated atwound sites on trunks that are caused by alternating freezing temperatures. Wounds release chemicalsignals that are perceived by the bacterium and result in the induction of virulence (vir) genes encoded bythe Ti plasmid. In addition, some chromosomal genes are also involved in the infection process (Gelvin2000).