1. Effects of 5-aminolevulinic acid on osmotic adjustment and antioxidant system in mung bean under chilling stress.
- Author
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ZHAO, J. J., ZHOU, N., FENG, N. J., and ZHENG, D. F.
- Abstract
The present study was carried out to determine the effect of chilling stress on mung bean [Vigna radiata (L.) Wilczek], and the possible mediatory role of applied 5-aminolevulinic acid (ALA) on osmotic adjustment and antioxidant system. The increased accumulation of superoxide radical, hydrogen peroxide, and malondialdehyde during chilling stress indicates an enhanced oxidative stress. The chilling stress induced an enhancement of reduced or oxidized glutathione and ascorbic acid, and improvement of superoxide dismutase (SOD), peroxidase (POD), glutathione reductase (GR), and ascorbate peroxidase (APX) activities, but the activity of catalase (CAT) declined. Exogenous ALA enhanced the content of glutathione and ascorbic acid and elevated the antioxidant enzyme activities (POD, SOD, GR, and APX), which improved reactive oxygen species scavenging. In addition, an increased content of osmoprotectants including soluble sugars, soluble proteins, and proline contributed to ROS detoxification and enzyme/protein stabilization. Thus, ALA had a positive effect in improving the chilling resistance of mung bean plants. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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