Figure 2From: Identification and functional characterization of bidirectional gene pairs and their intergenic regions in maizeIdentification of putative GS BD PROs. Embryos were isolated from 20 DAP immature maize kernels. Each construct was introduced twice by particle gun bombardment with six embryos per bombardment. GS-n represent the promoters cloned randomly from 1696 putative BD PROs; CK: Embryos bombarded with empty vector plasmid. Putative BD PROs that showed promoter activity in both directions are indicated by a red box.Back to article page