Enhanced disease resistance in plants

A method of expressing a nucleic acid molecule in a plant, said method comprising:

• transforming a plant, a plant seed, or a plant cell with a nucleic acid construct to produce a transgenic plant, a transgenic plant seed, or a transgenic plant cell comprising:
• a nucleic acid molecule comprising a Pseudomonas tomato race 1 (Ptr1) polynucleotide encoding an amino acid sequence having at least 94% sequence identity to SEQ ID NO:
• 19, wherein the amino acid sequence confers disease resistance against Pseudomonas syringae tomato race 1 in a plant from the Solanaceae family;
• a 5′ DNA promoter sequence heterologous to the nucleic acid molecule;
• and
• a 3′ terminator sequence, wherein the nucleic acid molecule, the DNA promoter sequence, and the terminator sequence are operatively coupled to permit transcription of the nucleic acid molecule, and wherein the plant, plant seed, or plant cell comprises the nucleic acid construct, and
• growing the transgenic plant or a plant grown from the transgenic plant seed or the transgenic plant cell under conditions effective to express the nucleic acid molecule in said transgenic plant or said plant grown from the transgenic plant seed or the transgenic plant cell.