Fig. 5From: Genome-wide investigation and expression profiling of polyphenol oxidase (PPO) family genes uncover likely functions in organ development and stress responses in Populus trichocarpaCis-element analysis of the PtrPPOs. The relative locations of stress and growth-related cis-elements in the PtrPPO promoter region. Different colors represent different cis-acting elements, and their position corresponds to the corresponding position of the promoterBack to article page