热带亚热带植物学报2026，Vol.34Issue(4)：467-478,12.DOI:10.11926/jtsb.5035
植物主要光周期成花调控途径及其纬度适应性的研究进展
Research Progress on Major Photoperiod Flowering-regulation Pathways in Plants and Their Latitudinal Adaptation
摘要
Abstract
Photoperiod is the most stable and reliable environmental signal perceived by plants,playing a core role in regulating flowering time and life cycle.During evolution,diverse plant species have established photoperiodic regulatory networks centered on the CO-FT module,which have further diversified into lineage-specific pathways adapted to different ecological environments.Due to the solar radiation rhythm caused by the tilt of the Earth's axis of rotation,geographical latitude determines the interannual stability of day length in a given region,that is,the photoperiod remains relatively constant at the same time each year.Therefore,latitude defines the photoperiodic environment experienced by plants.Conversely,plant responses to changes in photoperiod are often used as biological indicators of latitude adaptation.Flowering,as one of the most sensitive phenotypes to photoperiod changes,has become an important entry point for studying the latitudinal adaptability of plants.Current research mainly focuses on the flowering regulation mechanisms of the photo-period pathways in typical long-day and short-day plants such as Arabidopsis thaliana,Glycine max,and Oryza sativa.This article will mainly review the photoperiod pathways and latitudinal adaptability of these three plants:Arabidopsis thaliana has formed a classic long-day flowering promotion model centered on the positive regulation of FT(flowering locus T)by CO(constans);Glycine max has evolved a short-day regulatory mechanism centered on E1 that inhibits the expression of FT and has developed diverse adaptation strategies at different latitudes;Oryza sativa retains both the conserved OsGI-Hd1-Hd3a pathway and the unique Ghd7-Ehd1-Hd3a/RFT1 pathway,enhancing its adaptability to photoperiod environments.Through comparative analysis,the conservation,diversity,and latitudinal adaptability of the main plant photoperiod flowering regulation pathways are demonstrated,providing a reference for in-depth research on this pathway and crop breeding.关键词
光周期/开花/纬度适应性/CO-FT/GmGI-E1-FT/Ghd7-Ehd1-Hd3a/RFT1Key words
Photoperiod/Flowering/Latitudinal adaptation/CO-FT/GmGI-E1-FT/Ghd7-Ehd1-Hd3a/RFT1引用本文复制引用
肖鸿,赖秋圳,吕天晓,范甜,孔凡江,田长恩..植物主要光周期成花调控途径及其纬度适应性的研究进展[J].热带亚热带植物学报,2026,34(4):467-478,12.基金项目
国家自然科学基金重大项目(32090064) （32090064）
国家自然科学基金青年科学基金项目(32201800) （32201800）
广东省自然科学基金项目(2020A1515011423)资助 This work was supported by the Major Program of the National Natural Science Foundation of China(Grant No.32090064),the Youth Science Fund of the National Natural Science Foundation of China(Grant No.32201800),and the Project for Natural Science in Guangdong(Grant No.2020A1515011423). （2020A1515011423）
