<i>CHPO</i> coordinates chilling recovery and nitrogen use in rice

A rice gene named CHPO was identified as coordinating chilling resilience and nitrogen-use efficiency on June 17, 2026, according to research published in Nature. This discovery reveals a regulatory mechanism that has been shaped by rice domestication. The CHPO gene plays a crucial role in how rice plants respond to cold temperatures and utilize nitrogen, two critical factors for crop yield and sustainability. Researchers found that variations in CHPO can significantly impact a plant's ability to withstand chilling stress while simultaneously improving its capacity to absorb and use nitrogen from the soil. This dual function makes CHPO a promising target for breeding new rice varieties that are better adapted to changing climate conditions and require fewer nitrogen fertilizers. The study suggests that understanding and manipulating CHPO could lead to the development of more climate-resilient and sustainable rice cultivation practices, addressing global food security challenges. The findings highlight the intricate genetic pathways that have evolved during rice domestication and offer a pathway for future agricultural innovation.