GSK3 phosphorylates and regulates the Green Revolution protein Rht-B1b to reduce plant height in wheat

文献类型： 外文期刊

第一作者： Dong, Huixue

作者： Dong, Huixue;Li, Danping;Yang, Ruizhen;Zhang, Lichao;Zhang, Yunwei;Liu, Xu;Kong, Xiuying;Sun, Jiaqiang;Dong, Huixue

作者机构：

期刊名称：PLANT CELL （ 影响因子：11.6； 五年影响因子：12.9 ）

ISSN： 1040-4651

年卷期： 2023 年

页码：

收录情况： SCI

摘要： GSK3 phosphorylates the Green Revolution protein Rht-B1b, enhancing its ability to inhibit target transcription factor activity to reduce plant height in wheat. The utilization of stabilized DELLA proteins Rht-B1b and Rht-D1b was crucial for increasing wheat (Triticum aestivum) productivity during the Green Revolution. However, the underlying mechanisms remain to be clarified. Here, we cloned a gain-of-function allele of the GSK3/SHAGGY-like kinase-encoding gene GSK3 by characterizing a dwarf wheat mutant. Furthermore, we determined that GSK3 interacts with and phosphorylates the Green Revolution protein Rht-B1b to promote it to reduce plant height in wheat. Specifically, phosphorylation by GSK3 may enhance the activity and stability of Rht-B1b, allowing it to inhibit the activities of its target transcription factors. Taken together, we reveal a positive regulatory mechanism for the Green Revolution protein Rht-B1b by GSK3, which might have contributed to the Green Revolution in wheat.

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