#family_Rhizobiaceae__Rhizobiaceae  a small family of rod-shaped bacteria
  supertype:  #bacteria_family  a family of bacteria
  member of:  #order_Eubacteriales
  member:  #genus_Rhizobium__Rhizobium  the type genus of Rhizobiaceae; usually occur in the root nodules of legumes; can fix atmospheric oxygen
  member:  #genus_Agrobacterium__Agrobacterium  small motile bacterial rods that can reduce nitrates and cause galls on plant stems
     member:  #Agrobacterium_tumefaciens  the bacteria that produce crown gall disease in plants

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