Nitrate sensing through NLP7-NIGT1.3 regulates iron deficiency responses and growth trade-offs in Arabidopsis.
Nitrate fertilizers exacerbate Fe deficiency in plants, a phenomenon traditionally attributed to rhizosphere alkalinization that reduces Fe bioavailability. However, whether nitrate itself acts as a signaling molecule in this process has remained unclear. Here, we demonstrate that nitrate functions as an essential sign...