Scientific news
Monday, 02-02-2026 | 08:37
Rice grain protein content is crucial for its quality and nutritional value, but the mechanisms of nitrogen transport to the grain remain poorly understood. This study demonstrates that the amino acid transporter OsAAP4 regulates protein accumulation in rice grains. OsAAP4 is expressed during grain filling, increasing at the mid-filling stage. Analysis of aap4 mutants in Zhonghua11 and Nipponbare backgrounds revealed significantly reduced grain yield and polished rice protein content compared to wild-type.
