CC-Type Glutaredoxins Mediate Plant Response and Signaling Under Nitrate Starvation in Arabidopsis

The study investigated the role of CC-type glutaredoxins (ROXYs) in Arabidopsis plants under nitrate starvation. It found that ROXYs were differentially expressed in response to nitrate deprivation and played a role in nutrient sensing by regulating chlorophyll content, root hair growth, and transcription of nitrate-related genes like NRT2.1. Additionally, reactive oxygen species (ROS) were produced in plant roots under nitrate starvation, and H2O2 treatment affected ROXY expression, indicating that ROS are involved in the signaling pathways under nitrate deficiency. This research enhanced the understanding of nitrogen sensing and signaling, highlighting the involvement of ROXYs and ROS in the nitrate deprivation response.