The joint project, led by Kirin's Institute for Future Beverages, combines RIKEN CSRS's research into how plants respond to environmental stress with Kirin and subsidiary Mercian Corporation's cultivation and biotechnology expertise. Testing is taking place under real growing conditions at Mercian's Mariko Vineyard in Ueda City, Nagano Prefecture, where researchers have been evaluating vine growth and environmental factors in selected plots since April 2026.
The goal is to find ways to keep existing grape varieties productive and high in quality even as heat stress and reduced water availability put pressure on vineyards. Rather than relying solely on adaptation measures such as irrigation — which is not always feasible in water-scarce regions — the partners hope to develop science-based approaches that support sustainable cultivation with limited water resources.
The research is also part of Japan's Cabinet Office "BRIDGE" program, which supports moving R&D findings into practical, real-world use as part of the government's broader Society 5.0 initiative.
Kirin said the work is still in its early stages, with the effectiveness and scalability of any techniques to be assessed over time. If successful, the companies see potential for applying the findings beyond Japan, in wine regions worldwide facing similar climate pressures.
The announcement builds on Kirin's long-standing focus on fermentation and biotechnology and Mercian's experience managing vineyards in Japan in support of the country's domestic wine industry.
