Crazy roots, hairy roots, crown gall
pathogenic Rhizobium species cause different symptoms, like galls, tumours and excessive root growth. All four species cause the growth of galls on the stems [...] seems to be caused by a change in the hormonal system of the plant resulting from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant [...] vegetative growth occurs. Life cycle and appearance of Crazy roots, hairy roots, crown gall The primary source of infection by Rhizobium rhizogenes has not yet