Agrobacterium most important feature is that they can induce plants produce tumors (of course, has also been isolated from nature plants produce some tumors can not induce toxic Agrobacterium strain). Can induce crown gall Agrobacterium classified as A.tumefaciens, which can induce stem galls Agrobacterium classified as A.rhizogenes , which are widely distributed plant disease "crown gall disease" and "hairy root disease," the pathogen, it used to Also known as the virulent strains of these strains.