Researchers Develop Gene-Edited Tomato with Popcorn-Like Fragrance

Researchers from China and Australia have successfully used CRISPR-Cas9 gene editing technology to create a new tomato variety with a distinct "popcorn-like" fragrance. By targeting specific genes responsible for volatile organic compounds, the team increased the levels of 2-acetyl-1-pyrroline (2-AP), the same chemical compound that gives fragrant rice and popcorn their signature scent, without negatively impacting fruit growth or nutritional value.

The study, published in the Journal of Integrative Agriculture, focused on disrupting two specific genes, SlBADH1 and SlBADH2. While previous breeding efforts have often prioritized yield and shelf life, this genetic intervention allowed the scientists to reclaim lost aromatic complexity. The researchers found that while both genes play a role, mutating them simultaneously resulted in 2-AP concentrations more than four times higher than in single-mutation lines, creating an extraordinary aromatic profile in both leaves and fruit.

The team confirmed that these enhancements did not come at a cost to the plant's agronomic performance. Evaluations of the gene-edited tomatoes showed no significant changes in flowering time, plant height, or fruit weight. Essential quality markers, such as sugar content, organic acids, and Vitamin C, remained consistent with traditional varieties. The researchers now plan to introduce this fragrant trait into elite commercial cultivars, potentially revolutionizing the market value and consumer appeal of modern tomatoes.

For more details, read the article in KeAi Communications.