Patent ID: 8575432

Claim:
An isolated plant which is resistant to a pathogen, wherein the plant has an increased endogenous L-homoserine level as compared to a plant that is not resistant to said pathogen, wherein said plant is selected from the group consisting of cucumber, grape, and tomato, and wherein when said plant is cucumber, said pathogen is Pseudoperonospora cubensis and said cucumber plant has a mutation in the homoserine kinase gene of SEQ ID NO: 105 lowering the homoserine kinase activity of SEQ ID NO: 106; wherein when said plant is grape, said pathogen is Plasmopara viticola and said grape plant has a mutation in the homoserine kinase gene of SEQ ID NO: 103 lowering the homoserine kinase activity of SEQ ID NO: 104; and wherein when said plant is tomato, said pathogen is Phytophthora infestans and said tomato plant has a mutation in the homoserine kinase gene of SEQ ID NO: 109 lowering the homoserine kinase activity of SEQ ID NO: 110.