Researchers Identify Key Regulatory Mechanism in Rice Growth Hormones

Scientists have uncovered a phosphorylation-dependent OsGSK2-OsBSK3 negative feedback mechanism that precisely regulates brassinosteroid (BR) signaling in rice. Brassinosteroids are vital plant hormones controlling growth and development, including leaf angle and grain size. This discovery, published in Plant Physiology, enhances understanding of how rice maintains optimal BR signaling through coordinated activation and attenuation pathways, potentially aiding agricultural improvements.