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Position: Home > Articles > 5-Aminolevulinic acid alleviates herbicide-induced physiological and ultrastructural changes in Brassica napus Journal of Integrative Agriculture 2018,17 (3)

5-Aminolevulinic acid alleviates herbicide-induced physiological and ultrastructural changes in Brassica napus

作者：

Xu Ling;Islam, Faisal;Zhang Wen-fang;Ghani, Muhammad A.;Ali, Basharat

单位：

Jiading Dist Agrotechnol Extens Serv Ctr, Shanghai 201800, Peoples R China;Univ Bonn, Inst Crop Sci & Resource Conservat, D-53115 Bonn, Germany;Univ Agr Faisalabad, Inst Hort Sci, Faisalabad 38040, Pakistan;Zhejiang Sci Tech Univ, Coll Life Sci, Key Lab Plant Secondary Metab & Regulat Zhejiang, Hangzhou 310018, Zhejiang, Peoples R China;Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310058, Zhejiang, Peoples R China

关键词：

Brassica napus L.;ALA;ZJ0273;plant growth;antioxidant enzyme activities;ultrastructure;two-dimensional gel electrophoresis (2-DE)

摘要：

It is well known that application of 5-aminolevulinic acid (ALA) could promote the plant growth under abiotic stress in oilseed rape (Brassica napus L.). However, the specifics of its physiological and ultrastructural regulation under herbicide stress conditions are poorly understood. In the present study, alleviating role of ALA in B. napus was investigated under four levels of herbicide propyl 4-(2-(4,6-dimethoxypyrimidin-2-yloxy) benzylamino) benzoate (ZJ0273) (0, 100, 200 and 500 mg L-1) with or without 1 mg L-1 ALA treated for 48 or 72 h. Results showed that after 48 h of herbicide stress, the growth of rape seedlings was significantly inhibited with the successive increases of the ZJ0273 concentrations from 0 to 500 mg L-1, but this inhibition was obviously alleviated by exogenous application of ALA. However, when treatment time prolonged to 72 h, the recovery effects of ALA could not be evaluated due to the death of plants treated with the highest concentration of ZJ0273 (500 mg L-1). Further, the root oxidizability and activities of antioxidant enzymes (superoxide dismutase, peroxidase and ascorbate peroxidase) were dramatically enhanced by the application of 1 mg L-1 ALA under herbicide stress. Therefore, plants treated with ALA dynamically modulated their antioxidant defenses to reduce reactive oxygen species (ROS) accumulation and malondialdehyde (MDA) content induced by herbicide stress. Additionally, exogenously applied ALA improved the ultrastructure's of chloroplast, mitochondria and nucleus, and induced the production of stress proteins. Our results suggest that ALA could be considered as a potential plant growth regulator for the improvement of herbicide tolerance through alleviation of the physiological and ultrastructural changes induced by the herbicide in crop production.

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5-Aminolevulinic acid alleviates herbicide-induced physiological and ultrastructural changes in Brassica napus

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