highly significantp value = 1.78E−19
Lastly, for TGA1, a well-studied TF in N signaling 26 – 28 , we observed a large and highly significant overlap (600 genes, p value = 1.78E−19, Fisher’s exact test) of direct regulated targets identified in root cells using the TARGET system, compared to DE genes resulting from TGA1 overexpression in roots of whole plants (Supplementary Data 4 and Supplementary Fig. 7 ) (see Methods).