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

• DOI: 10.1093/plcell/koad090
• Publication Date: 2023-03-22T06:06:10Z
• Authors: Huixue Dong; Danping Li; Ruizhen Yang; Lichao Zhang; Yunwei Zhang; Xu Liu; Xiuying Kong; Jiaqiang Sun
• Keywords: Green Revolution

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