#brown_rot__brownrot  any of certain fungous diseases of plants characterized by browning and decay of tissues
  supertype:  #plant_disease__plantdisease  a disease that affects plants
  subtype:  #brown_rot_gummosis__gummosis  disease of citrus trees caused by the fungus Phytophthora citrophthora
  subtype:  #ring_rot__ring_disease__tobacco_wilt__tobaccowilt  disease of tomatoes and potatoes and tobacco etc caused by the bacterium Pseudomonas solanacearum

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