Trehalose-6-phosphate signaling regulates thermoresponsive hypocotyl growth in Arabidopsis thaliana

ABSTRACT: Growth plasticity is a key mechanism by which plants adapt to the ever-changing environmental conditions. Since growth is a high energy-demanding and irreversible process, it is expected to be regulated by the integration of endogenous energy status as well as environmental conditions. Here, we show that trehalose-6-phosphate (T6P) functions as a sugar signaling molecule that coordinates thermoresponsive hypocotyl growth with endogenous sugar availability. We found that the loss of T6P SYNTHASE 1 (TPS1) impaired high temperature-mediated hypocotyl growth. Consistently, the activity of PIF4, a positive transcription factor involved in hypocotyl growth, was compromised in the tps1 mutant. We further show that, in the tps1 mutant, a sugar signaling kinase KIN10 directly interacts with and pho

SUBMITTER: Geonhee Hwang 

PROVIDER: S-SCDT-EMBOR-2019-47828-T | biostudies-other |

REPOSITORIES: biostudies-other