文献类型：期刊文献

英文题名：Integration of transcriptomic and chemical analysis reveals key regulatory mechanisms involved in color variation between red and white flowers of Camellia semiserrata

作者：Jiang, Hong[1,2] Fan, Menglong[1] Zhang, Ying[1] Li, Xinlei[1]

第一作者：Jiang, Hong

通信作者：Zhang, Y[1];Li, XL[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Zhejiang Key Lab Forest Genet & Breeding, Hangzhou 311400, Zhejiang, Peoples R China;[2]Nanjing Forestry Univ, Nanjing 210037, Jiangsu, Peoples R China

年份：2025

外文期刊名：GENETIC RESOURCES AND CROP EVOLUTION

收录：;Scopus(收录号：2-s2.0-105014105677);WOS:【SCI-EXPANDED(收录号:WOS:001556007700001)】；

基金：Acknowledgments: The authors are grateful to the editors and referees for their valuable comments which improved our manuscript.

语种：英文

外文关键词：Camellia semiserrata; Floral color; Anthocyanin; Transcriptome; Chemical analysis

摘要：Camellia semiserrata is a woody ornamental plant, mainly known for its red flowers, with a variant that features white flowers called C. semiserrata form. albiflora. So far, its molecular mechanism remains unclear. Hereby, we performed a systematic study, subjecting petals of two Camellia species to transcriptomic and chemical analysis to uncover the obvious color variation between red and white flowers in C. semiserrata. The chemical analysis results indicated that proanthocyanidins were detected in both studied Camellia species. While a total of six anthocyanins were detected in C. semiserrata, no anthocyanins were detected in C. semiserrata form. albiflora. Cyanidin glucoside (cyanidin-3-O-glucoside) was the main substance contributing to petal color in C. semiserrata. Eleven structural genes annotated in the anthocyanin biosynthesis pathways exhibited strong downregulation in white flowers compared to red flowers. Significant downregulation of anthocyanin biosynthesis and transport genes was predicted to hinder anthocyanin accumulation, leading to white coloration. Through bioinformatics analysis of the CsUFGT (TRINITY_DN3641_c0_g1) identified in C. semiserrata, it is speculated that it may catalyze the final step of anthocyanin glycoside biosynthesis. This study elucidated the molecular characteristics of color variation in C. semiserrata, which can aid future breeding programs.