摘要
DNA甲基化是一种常见的表观遗传修饰,对植物果实的成熟具有重要的作用,本文中综述了果实成熟过程中DNA甲基化水平的变化及其调控机制。基于已有研究发现,大部分果实在成熟过程存在总体DNA甲基化水平降低的情况,也有部分果实的总体DNA甲基化水平随果实成熟呈现升高趋势。此外,在果实成熟过程中特定基因尤其是与成熟相关的基因在去甲基化酶作用下发生去甲基化进而影响果实成熟。引起果实成熟过程中DNA甲基化水平变化的机制总体而言是受到甲基化酶、去甲基化酶以及植物特有的RdDM途径的综合调控。本文为深入解析果实发育与成熟的分子机制提供理论参考,并对以后的研究提出可行的建议。
DNA methylation is an important epigenetic modification,playing critical roles during fruit ripening.Here we reviewed the changes and mechanism of DNA methylation during fruit ripening in different fruits.Based on previous studies,it was found that the total DNA methylation level in most fruits decreases during the ripening process while the overall DNA methylation increases in a few other fruits.In addition,specific genes,especially those related to ripening,undergo demethylation under the regulation of demethylase,which further affects fruit ripening.In general,the mechanism that causes DNA methylation alternations during fruit ripening is comprehensively regulated by methylase,demethylase and plant specific RdDM pathway.This work provides important theoretical reference for the epigenetic regulation mechanism of fruit ripening,and feasible suggestions are proposed for future work.
作者
邵凤清
罗秀荣
王奇
张宪智
王文彩
SHAO Fengqing;LUO Xiurong;WANG Qi;ZHANG Xianzhi;WANG Wencai(Science and Technology Innovation Center,Guangzhou University of Chinese Medicine,Institute of Clinical Pharmacology,Guangzhou University of Chinese Medicine,Guangzhou 510405,China;College of Horticulture and Landscape Architecture,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China)
出处
《园艺学报》
CAS
CSCD
北大核心
2023年第1期197-208,共12页
Acta Horticulturae Sinica
基金
广州中医药大学杏林人才科研启动项目。
