Comparison of Enzyme Activities Involved in AsA-GSH Cycle in Red-flesh Kiwifruit Varieties

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Wang, Xiu^1 ; Xia, Hui^2 ; Ni, Zhiyou^1 ; Liang, Dong^1,2

College of Horticulture, Sichuan Agricultural University, Chengdu

611130, China^1

Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu

611130, China^2

关键词: Ascorbate peroxidase;    Ascorbate-glutathione cycle;    Dehydroascorbate reductase;    Glutathione reductase;    Kiwifruits;    Monodehydroascorbate reductase;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/5/052015/pdf
DOI  :  10.1088/1757-899X/392/5/052015

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Kiwifruit is rich in ascorbic acid. In this study, activities five enzymes involved in ascorbate-glutathione cycle (AsA-GSH cycle) were determined in four red-flesh kiwifruit varieties. Results showed that 'Tetra-Chine' had higher activities in APX (ascorbate peroxidase) and AO, while 'Hongshi 2' had higher activities of dehydroascorbate reductase (DHAR) and monodehydroascorbate reductase (MDHAR). In addition, 'Hongyang' contained the highest content of H2O2, '808' contained the highest activity of glutathione reductase (GR). All of these results indicated that there were significant differences in the activities of enzymes in different genotypes.