Effects of exogenous melatonin and abscisic acid on the antioxidant enzyme activities and photosynthetic pigment in 'Summer Black' grape under drought stress

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Lin, Zhiyi^1 ; Wang, Yunmei^1 ; Xia, Hui^1 ; Liang, Dong^1

Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu

611130, China^1

关键词: Abscisic acid;    Antioxidant capacity;    Antioxidant enzyme activity;    Chlorophyll contents;    Drought stress;    Experimental materials;    Grape leaves;    Photosynthetic pigments;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/2/012013/pdf
DOI  :  10.1088/1755-1315/295/2/012013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this study, 'Summer Black' grape seedlings were used as the experimental materials, to be applied with 100μmol/L melatonin (MT) and 50μmol/L abscisic acid (ABA) solutions to investigate the effects on antioxidant enzyme activities and photosynthetic pigment under drought stress. The results showed that the increase of chlorophyll content in grape leaves due to drought was reduced by the function of MT and ABA, while the content of carotenoid showed the opposite trend. The antioxidant capacity was measured with SOD, POD and CAT, and showed that MT, ABA treatment significantly increased the activity of SOD, but reduced activity of POD and CAT in the leaves. ABA had the greater effect, but MT seems impaired the influence of ABA. The results provided a theoretical basis for improving the yield and quality of grape.