2021
DOI: 10.1101/2021.03.07.434240
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Zhijie Ren, Fenglin Bai, Jingwen Xu, Li Wang, Xiaohan Wang, Qian Zhang, Changxin Feng, Qi Niu, Liying Zhang, Mengou Li, Jiali Song, Fang Bao, Liangyu Liu, Yikun He et al.

Abstract: Grain size is determined by the number of cells and cell size of the grain. Regulation of grain size is crucial for improving crop yield. However, the genes and underlying molecular mechanisms controlling grain size remain elusive. Here we report a member of Detoxification efflux carrier (DTX)/Multidrug and Toxic Compound Extrusion (MATE) family transporter, BIG RICE GRAIN 1 (BIRG1), negatively regulates the grain size in rice. BIRG1 is highly expressed in reproductive organs and roots. In birg1 grain, the siz…

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