Fig. 3

Promoter cis-acting elements analysis of MsNRT2 genes. (A) The identified cis-acting elements were divided into three functional groups and represented by red, green and blue shades of colors. The numbers indicate the quantity of corresponding cis-acting elements in each NRT2 genes promoter region. Distribution of cis-acting elements with different categories within each group of cis-acting elements with different specific functions, including hormone response (B), light signal (C), and stress response (D).