University of Florida scientists have pulled off a tomato makeover that is more than a cosmetic change, engineering orange fruit that could quietly cover a person’s daily vitamin A in a modest serving. By borrowing a pigment enzyme from peppers, the team created tomato lines that, in laboratory and greenhouse crosses, piled up beta‑carotene and pepper ketocarotenoids and, critically, produced larger fruit, higher yields and altered flavor volatiles compared with standard red controls. The work is led by Jingwei Fu with senior author Bala Rathinasabapathi and collaborator Denise Tieman at UF/IFAS.
A peer‑reviewed paper published last Tuesday in Plant Physiology reports that expressing the pepper capsanthin/capsorubin synthase (CCS) enzyme in tomato redirects carotenoid chemistry toward the β‑branch, boosting both total carotenoids and β‑carotene. According to the authors, controlled crosses yielded CaCCS‑derived hybrids whose fruit are so enriched in provitamin A that a 37–131‑gram serving could meet the recommended dietary allowance for provitamin A.
How a Pepper Gene Rewired Tomato Nutrition
The team first dug into what CCS does in peppers, then moved the enzyme into tomato, a crop that normally stockpiles lycopene rather than β‑carotene. According to UF/IFAS, CCS expression flipped the usual script, producing orange instead of red fruit and adding the pepper pigments capsanthin and capsorubin. The researchers say these pigments act as antioxidants and helped push β‑carotene levels higher.
Rathinasabapathi told UF/IFAS that the altered fruit did not just look different in a petri dish. In breeding trials, the CCS‑engineered lines produced hybrids with improved fruit size and distinct flavor volatile profiles, a hint that any future vitamin‑A tomato might also bring a slightly different taste to the table.
Why It Could Matter Worldwide
Vitamin A deficiency is still a massive public‑health problem. The World Health Organization estimates roughly 190 million preschool‑age children are affected, mostly in Africa and South‑East Asia. The Tampa Free Press reports the researchers’ estimate that, if this fortified tomato were widely adopted, it could help address deficiency in hundreds of millions of people across dozens of countries.
Experts say food‑based biofortification like this is meant to complement, not replace, existing vitamin A supplementation and food‑fortification programs, essentially adding another tool to the public‑health toolbox rather than swapping one out.
Next Steps Before Growers or Shoppers See Them
For all the excitement, these tomatoes are still experimental hybrids, not something you will find in a supermarket bin anytime soon. Researchers caution that broader field trials, safety and regulatory review, and further breeding into locally adapted varieties are all needed before any commercial rollout.
Plant Physiology notes that the UF team introduced CaCCS into multiple inbred lines to build hybrids with both higher provitamin A content and higher yield. Scaling that success will require partnerships with plant breeders and public‑health programs that can move the trait into regional varieties and get them to farmers.
For now, UF scientists are framing the work as a potentially low‑cost, food‑based tool that could sit alongside vitamin supplements and fortified foods, helping chip away at vitamin A deficiency one orange tomato at a time.
