An antioxidant system in cucumber seedling leaves with short term drought stress
To determine the effect of short term drought stress on an antioxidant system in cucumber seedling leaves,the Cucumis sativus ‘Jinyou No.1’ seedlings were cultured in a shanqi nutrient solution under drought stress simulated by 5％ and 10％ PEG 6000.A control,5％ and 10％ PEG 6000 with three replications was used to compare superoxide dismutase (SOD),glutathione reductase (GR),ascorbate (ASA),glutathione (GSH),soluble protein,malondialdehyde (MDA).Results after 24 h of treatment showed that compared to the control,SOD and GR activities as well as ASA and GSH content significantly decreased (P＜0.05).However,soluble protein and MDA content significantly increased (P＜0.05).Thus,short term stress resulted in acceleration of the membrane lipid peroxidation,and the enzymatic antioxidant system played a more active role in the process of antioxidant.
horticulturecucumberdrought stressantioxidant system
国家科技期刊平台
NSTL
万方数据
维普
