摘要
维生素C(Vitamin C),又名抗坏血酸(Ascorbate acid,AsA),是生物体中具有多效功能的必需化合物.整理了植物果实中维生素C的生理功能以及其中参与维生素C合成的L-半乳糖途径、D-半乳糖醛酸途径、L-古洛糖途径、肌醇途径和维生素C循环途径,并分析了相关基因的功能和表达.对参与维生素C合成与循环的16个基因:PMI、PMM、GMP、GME、GGP、GPP、GalDH、GLDH、GalUR、MIOX、GuLDH、MDHAR、DHAR、AO、APX、GR,及其在维生素C代谢途径中的作用进行了综述.植物果实中维生素C合成代谢途径多样,关键基因的表达会在不同程度上影响其合成代谢,了解植物果实中维生素C合成代谢及相关基因的功能和表达,可为生产富含维生素C的转基因水果和蔬菜奠定基础.
Abstract
Vitamin C,also known as Ascorbate acid(AsA),was an essential compound with multiple functions in many organisms.This article reviewed the physiological functions of vitamin C in plants,as well as the L-galactose pathway,D-galactouronic acid pathway,L-gulose pathway,inositol path-way and ascorbic acid cycle pathway involved in AsA synthesis in plant fruits,and analyzed the func-tions and expressions of related genes.16 genes involved in the synthesis and circulation of AsA:PMI,PMM,GMP,GME,GGP,GPP,GalDH,GLDH,GalUR,MIOX,GuLDH,MDHAR,DHAR,AO,APX,GR,and their roles in AsA metabolic pathways were reviewed.The pathways of AsA syn-thesis and metabolism in plant fruits were diverse.And the expressions of key genes affected the synthe-sis and metabolism of AsA in fruits to varying degrees.Understanding the function and expression of AsA synthesis and related genes in plant fruits could lay the foundation for the production of transgenic fruit and vegetable rich in AsA.
基金项目
中藏药材绿色高值化与标准化生产技术集成与示范推广项目(2023-NK-P38)
青海师范大学大学生创新创业训练项目(qhnucxcy2023058)
NETL
NSTL
万方数据