Alleviation of cadmium toxicity by 5-aminolevulinic acid is related to improved nutrients uptake and lowered oxidative stress in Brassica napus. | [International Journal of Agriculture and Biology • 2016]

Author(s):

1. Ling Xu: Zhejiang Province Key Laboratory of Plant Secondary Metabolism and Regulation, College of Life Sciences, Zhejiang SciTech University, Hangzhou, China

2. Basharat Ali: Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, China

3. Rafaqat A. Gill: Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, China

4. Lan Li: Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, China

5. Weijun Zhou: Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, China

Abstract:

The oilseed rape production (Brassica napus L.) has been shown to decrease under heavy-metal stress. This study tested the hypothesis that 5-aminolevulinic acid (ALA) has ameliorating role under cadmium (Cd)-toxicity in B. napus. In the present study, three levels (0, 100 and 500 μM) of Cd and three levels (0, 12.5 and 25 mg/L) of foliar ALA were applied hydroponically in greenhouse. Results demonstrated that ALA significantly enhanced the leaf chlorophyll contents under Cd stress as compared to control. Exogenously applied ALA enhanced the concentration of macro- and micronutrients in the leaves and roots of B. napus under Cd stress. Further, foliar application of ALA significantly decreased malondialdehyde and reactive oxygen species in the leaves of B. napus under Cd stress. Moreover, the present study revealed that leaves treated with ALA at different concentrations increased the concentration of glutathione reduced (GSH), glutathione oxidized (GSSG), total glutathione and soluble protein contents as well as decreased the GSH/GSSG ratio under Cd-toxicity. The present study stated that ALA improved the concentration of nutrients and decreased oxidative stress due to its ameliorative capability under Cd stress conditions in B. napus.

Page(s): 557-564

DOI: DOI not available

Published: Journal: International Journal of Agriculture and Biology, Volume: 18, Issue: 3, Year: 2016

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