Figure 4

Relative expression of ZmNAS genes in different mazie organs. Total RNA was extracted from root (R), stem (S), leaf (L), leaf sheath (Sh), tassel (Ti), immature ear (Ei), silk (Si), as well as seed (se), endosperm (en) and embryo (em) at indicated days after pollination (10D-25D). For each gene, the relatively expression levels were obtained by normalization with maize Actin1. The error bars indicate standard deviations.