Grain number per panicle (GNP) is a critical yield component trait of rice. Here, the authors clone a MAPKKK encoding gene GNP3 positively regulating grain yield and show its role in rice panicle development by interacting and destabilizing ethylene biosynthesis related enzyme SADENOSYLMETHIONINE SYNTHETASE 1.
- Zhiqi Ma
- Yuhang Ming
- Zhanying Zhang