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Phytotoxicity assessment of atrazine on growth and physiology of three emergent plants

文献类型： 外文期刊

作者： Wang, Qinghai 1 ; Que, Xiaoe 2 ; Zheng, Ruilun 1 ; Pang, Zuo 1 ; Li, Cui 1 ; Xiao, Bo 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China

2.Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China

关键词： Phytotoxicity;Herbicide;Aquatic plant;Sensitivity

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

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收录情况： SCI

摘要： The emergent plants Acorus calamus, Lythrum salicaria, and Scirpus tabernaemontani were exposed to atrazine for 15, 30, 45, and 60 days in a hydroponic system. Effects were evaluated investigating plant growth, chlorophyll (Chl) content, peroxidase (POD) activity, and malondialdehyde (MDA) content. Results showed that selected plants survived in culture solution with atrazine <= 8 mg L-1, but relative growth rates decreased significantly in the first 15-day exposure. Chla content decreased, but MDA increased with increasing atrazine concentration. S. tabernaemontani was the most insensitive species, followed by A. calamus and L.salicaria. The growth indicators exhibited significant changes in the early stage of atrazine exposure; subsequently, the negative impacts weakened and disappeared. Plant growth may be more representative of emergent plant fitness than physiological endpoints in toxicity assessment of herbicides to emergent plants.

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