Ptr1 tomato plant (IMAGE) Boyce Thompson Institute Caption A tomato plant with the newly discovered Ptr1 gene (left) is resistant to the race 1 strain of bacterial speck disease, while a tomato plant without the gene (right) is susceptible. Credit Greg Martin Usage Restrictions image credit required License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.