CGD: a multi-omics database for Chrysanthemum genomic and biological research

Asteraceae is the largest family of dicotyledons and includes Chrysanthemum and Helianthus, two important genera of ornamental plants. The genus Chrysanthemum consists of more than 30 species and contains many economically important ornamental, medicinal, and industrial plants. To more effectively promote Chrysanthemum research, we constructed the CGD, a Chrysanthemum genome database containing a large amount of data and useful tools. The CGD hosts well-assembled reference genome data for six Chrysanthemum species. These genomic data were fully annotated by comparison with various protein and domain data. Transcriptome data for nine different tissues, five flower developmental stages, and five treatments were subsequently added to the CGD. A fully functional 'RNA data' module was designed to provide complete and visual expression profile data. In addition, the CGD also provides many of the latest bioinformatics analysis tools, such as the efficient sgRNA search tool for Chrysanthemum. In conclusion, the CGD provides the latest, richest, and most complete multi-omics resources and powerful tools for Chrysanthemum. Collectively, the CGD will become the central gateway for Chrysanthemum genomics and genetic breeding research and will aid in the study of polyploid evolution.