Provided herein are plants that reduce growth of a fungal pathogen, increase resistance of the plant to a fungal pathogen, or a combination thereof. The plant includes a polynucleotide that reduces expression of a coding region present in a fungal pathogen, such as Sclerotinia sclerotiorum or Botrytis cinerea. The polynucleotide can be present on the surface of the plant, expressed by a plant, or a combination thereof. Also provided are methods of making and methods of using the plants.