Japanese Scientists Identify First Begomovirus Resistance Gene in Eggplants

Researchers at Japan's Kindai University have identified a single gene, Ey-1, that provides eggplants with natural resistance to begomoviruses, a group of destructive viruses transmitted by whiteflies. The study, published in Theoretical and Applied Genetics, marks the first time a begomovirus resistance gene has been successfully cloned in eggplants.

The Ey-1 gene works by encoding a specific enzyme called DEDDh exonuclease, which acts as a biological shield by degrading the virus's genetic material. While susceptible plants suffer from stunted growth and severe leaf curling, eggplants carrying the gene remain healthy and show significantly lower levels of viral DNA. This mechanism prevents the virus from multiplying, effectively neutralizing the threat before it can devastate the crop.

This discovery offers a significant breakthrough for global food security and sustainable agricultural practices. It provides a powerful alternative to the heavy use of chemical pesticides traditionally used to control whiteflies. By breeding eggplant varieties with natural resistance, farmers, especially in tropical and subtropical regions, can reduce environmental damage and production costs. The researchers believe this discovery will lead to more resilient crop varieties and safer, more eco-friendly farming systems worldwide.

For more details, read the news release here.