Cathie Martin and her team found that by inserting genes from snapdragons that overexpressed the genes producing a pigment called anthocyanin, tomatoes with the inserts last longer on the shelf, did not over ripen, and could resist a common mold that infests picked tomatoes. As a bonus, anthocyanin is associated with resisting certain cancers, cardiovascular disease and other human diseases. The researchers report their results in the journal Current Biology.