Lagerstroemia indica is a summer ornamental flowering tree, belonging to the Lythraceae family. Its flower color is a key ornamental characteristic. Recent research indicates that WRKY and bZIP transcription factors play important role in flower color formation. Based on the transcriptome database of L. indica, this study identified 85 LibZIPs and 61 LiWRKYs from the L. indica transcriptome database and analyzed their expression profiles using qRT-PCR. Phylogenetic analysis divided LibZIPs into 11 subfamilies and LiWRKYs into six subfamilies. Nine LibZIPs and four LiWRKYs were found to have higher expression in colored samples compared to the white sample. LibZIP31, LibZIP65, LibZIP34, LiWRKY16, LiWRKY25, LiWRKY40, and LiWRKY67 may play important roles in flower color formation in L. indica. These results provide valuable information for further functional analysis of the bZIP and WRKY genes families in L. indica and help clarify their roles in flower color formation.

紫薇（Lagerstroemia indica）是一种夏季观赏开花树，属于千屈菜科。它的花色是一个关键的观赏特征。最近的研究表明，WRKY 和 bZIP 转录因子在花色形成中发挥着重要作用。本研究以L. indica转录组数据库为基础，从L. indica转录组数据库中鉴定出85个LibZIPs和61个LiWRKYs，并利用qRT-PCR分析了它们的表达谱。系统发育分析将LibZIP分为 11 个亚科，将LiWRKY分为 6 个亚科。与白色样本相比，九个LibZIP和四个LiWRKY在彩色样本中的表达量更高。LibZIP31、LibZIP65、LibZIP34、LiWRKY16、LiWRKY25、LiWRKY40和LiWRKY67可能在L. indica花色形成中发挥重要作用。这些结果为进一步分析籼稻bZIP 和 WRKY 基因家族的功能提供了有价值的信息，并有助于阐明它们在花色形成中的作用。