Comparative Studies Between Treatments of Potato Tubers Slices with Three Amino Acids and Treatment with Salicylic Acid or Jasmonic Acid on the Infection by Dry Rot (Fusarium solani)

The effect of treatment potato tuber slices with three different amino acids i.e., L-tyrosine, L-arginine or L-methionine was carried out to throw some light on their interaction with dry rot caused by Fusarium solani (Mart.) Sacc. L-methionine induced a large effect on disease severity; it caused a change in the interaction between host and pathogen from a state of susceptibility to a state of resistance. However, either salicylic acid or jasmonic acid led to a similar less effect. The obtained results overlooked the role of such hormones in disease resistance and led to postulate the occurrence of DNA methylation due to the treatment with L-methionine.