Arabidopsis ACT DOMAIN REPEAT9 represses glucose signaling pathways.

Nutrient sensing and signaling are critical for plants to coordinate growth and development in response to nutrient availability. Plant ACT DOMAIN REPEAT (ACR) proteins have been proposed to serve as nutrient sensors, but their functions remain largely unknown. Here, we showed that Arabidopsis (Arabidopsis thaliana) ACR9 might function as a repressor in glucose (Glc) signaling pathways.