DISEASE:
              Bacterial canker
           
        
            (Lycopersicon esculentum)
      
               Advanced stage of disease with reddish brown discoloration of vascular tissues (bottom). Healthy stem (top).
        
    PATHOGEN:
              Clavibacter michiganensis subsp. michiganensis
           
  
    PATHOGEN SYNONYM:
              Corynebacterium michiganense