Fig. 2.

The sequence of ZmPP2C26 promoter. The ‘‘A’’ in ‘‘ATG’’ of ZmPP2C26 gene is designated as ‘‘+ 1”. The predicted cis-acting elements are shown in red color with underline. The core elements CAAT and TATA box are shown in dark grey and white grey background, respectively. The detailed description of elements is listed in Table 2. The black arrow under the sequence indicates the position of primers to amplify different deletion fragments