Fig. 6From: Genome-wide characterization of aspartic protease (AP) gene family in Populus trichocarpa and identification of the potential PtAPs involved in wood formationAnalysis of secondary cell wall (SCW)-related cis-elements in promoters of 26 PtAP genes. The 3000 bp promoter regions (upstream DNA sequence of the 5′-UTR) of each PtAP gene were analyzed for SCW-related cis-elements. Different cis-elements were indicated by different colored diagramsBack to article page