BRI1 and BAK1 interact with G proteins and regulate sugar-responsive growth and development in Arabidopsis.

ABSTRACT: Sugars function as signal molecules to regulate growth, development, and gene expression in plants, yeasts, and animals. A coordination of sugar availability with phytohormone signals is crucial for plant growth and development. The molecular link between sugar availability and hormone-dependent plant growth are largely unknown. Here we report that BRI1 and BAK1 are involved in sugar-responsive growth and development. Glucose influences the physical interactions and phosphorylations of BRI1 and BAK1 in a concentration-dependent manner. BRI1 and BAK1 physically interact with G proteins that are essential for mediating sugar signaling. Biochemical data show that BRI1 can phosphorylate G protein β subunit and γ subunits, and BAK1 can phosphorylate G protein γ subunits. Genetic analyses sugges

SUBMITTER: Peng Y 

PROVIDER: S-EPMC5906681 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature