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Abstract
This study identified a RING-type E3 ligase SGD1 and its E2 partner SiUBC32, responsible for grain yield control in *Setaria italica*. SGD1 ubiquitinates the brassinosteroid receptor BRI1, stabilizing it and promoting growth. Overexpressing an elite SGD1 haplotype improved grain yield by about 12.8%. The SiUBC32-SGD1-BRI1 module contributes to grain yield improvement and provides a strategy for exploring key genes in Poaceae crops.
Publisher
Nature Communications
Published On
May 29, 2023
Authors
Sha Tang, Zhiying Zhao, Xiaotong Liu, Yi Sui, Dandan Zhang, Hui Zhi, Yuanzhu Gao, Hui Zhang, Linlin Zhang, Yannan Wang, Meicheng Zhao, Dongdong Li, Ke Wang, Qiang He, Renliang Zhang, Wei Zhang, Guanqing Jia, Wenqiang Tang, Xingguo Ye, Chuanyin Wu, Xianmin Diao
Tags
grain yield
E3 ligase
Setaria italica
brassinosteroid receptor
plant growth
ubiquitination
Poaceae crops

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