Multi-omics research in albino tea plants: Past, present, and future

•The research progress and classification of Atps were summarized.•The expression pattern of protochlorophyllide oxidoreductase (POR) is one of the crucial factors affecting chlorophyll biosynthesis and chloroplast biogenesis.•Epigenetics, tea processing, health benefits, and whole-genome resequencing are potential areas for study Atps.