Crazy roots, hairy roots, crown gall
roots, crown gall The primary source of infection by Rhizobium rhizogenes has not yet been defined. The assumption is that the bacteria survive in the soil [...] and on the crown. Furthermore, infection is characterized by excessive root growth (crazy roots). In greenhouse vegetables, the roots overgrow the substrate [...] n ow the first part of the name is changed to Rhizobium. Rhizobium rhizogenes or Rhizobium radiobacter causes crazy roots, hairy roots and crown gall.