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The G-protein β subunit SlGB1 regulates tyramine-derived phenolamide metabolism for shoot apex growth and development in tomato.

The Plant cell - 2 Apr 2025

Wang Jiao, Luo Qian, Deng Jingjing, Liang Xiao, Li Yimei, Wang Anran, Lin Teng, Liu Hua, Zhang Xuanbo, Liu Zhaoyu, Hu Zhangjian, Ding Shuting, Pan Changtian, Yu Jingquan, Gao Qifei, Foyer Christine H, Shi Kai

Abstract excerpt

The shoot apex is a critical determinant of plant growth, development, morphology, and yield. The G-protein β subunit (Gβ) is an essential regulator of apical meristem dynamics, yet its precise mechanism of action remains unclear, with notable interspecific variation. This study reveals that in the dicot tomato (Solanum lycopersicum), Gβ subunit mutants (Slgb1) display abnormal shoot morphogenesis and, in severe...

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PMID: 40152502
DOI: 10.1093/plcell/koaf070
PMCID: PMC11983129

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