A tomato in a grocery store (IMAGE) Iowa State University Caption Scientists are running outdoor field trials this summer to test a gene-edited tomato variety that could provide a new dietary source of vitamin D. Credit Amy Juhnke/Iowa State University Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.