Glucose-6-Phosphate 1-Epimerase Responds to Phosphate Starvation by Regulating Carbohydrate Homeostasis in Rice and <i>Arabidopsis</i>.

ABSTRACT: Plants adapt to phosphate starvation by remodeling root architecture and reallocating carbohydrates. Glucose-6-phosphate 1-epimerase (G6PE), a key enzyme in carbon and energy metabolism, is hypothesized to contribute to phosphate starvation responses. Here, we investigated the role of G6PE in rice and Arabidopsis through phenotypic, physiological, and molecular analyses of osg6pe and atg6pe mutants. Under normal-phosphate (NP) conditions, both mutants exhibited significantly reduced biomass and fresh weight compared with the wild-type (WT) plants, indicating growth inhibition caused by the mutations. Under low-phosphate (LP) conditions, the mutants displayed enhanced root growth, suggesting that G6PE functions as a negative regulator of radial root growth under phospha

SUBMITTER: Zhang H 

PROVIDER: S-EPMC12736901 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature