Ectopic expression of the GRAS-type transcriptional regulator in triggers contrasting effects on symbioses.

Introduction: Plants strictly control root endosymbioses with nutrient-scavenging arbuscular endomycorrhizal fungi or nodule inducing diazotrophic bacteria. The GRAS-type transcriptional regulator NODULATION SIGNALING PATHWAY 2 () is a conserved hub in this process. The -regulated transcriptional network is instrumental in balancing nutrient homeostasis with symbiotic interactions.