Insights into the molecular mechanism of the responses for Cyperus alternifolius to PhACs stress in constructed wetlands

文献类型： 外文期刊

第一作者： Yan, Qing

作者： Yan, Qing;Zhu, Zhi-wei;Feng, Guo-zhong;Yan, Qing;Zhu, Zhi-wei;Gao, Xu;Guo, Jin-song

作者机构：

关键词： Pharmaceutically active compound (PhACs);Proteomic;Phytoremediation;Antioxidant enzymes;Photosynthetic pigments

期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）

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年卷期：

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收录情况： SCI

摘要： Cyperus alternifolius has been widely reported to be an effective phytoremediation plant in constructed wetland systems (CWs). In this context, an integrated biochemical and proteomic analysis of C alternifolius leaves exposed to pharmaceutically active compounds (PhACs) in CWs was conducted to understand the mechanism of phytoremediation. The obtained results showed the antioxidant enzyme activities were induced throughout the experiment; however over time, the malondialdehyde content is not significantly different from the control and the photosynthetic pigment contents in plant were subsequently slowly recovered. Therefore, we concluded that reactive oxygen species could be effectively counteracted by the enhanced antioxidant enzyme activities, and therefore the photosynthetic pigments were ultimately restored. Leaf extract proteome maps were obtained through 2-DE, and an average of 55, 49, and 24 spots were significantly altered by 30, 100, and 500 1.1 mu g/L of PhACs over the control, respectively. Protein expression patterns showed that proteins in C. alternifolius leaves are associated with photosynthesis, energy metabolism, defense, and protein synthesis. Moreover, the most relevant pathways modulated by PhACs were photosynthesis and energy metabolism. The protein expression involved in antioxidant defense and stress response generally increased in all the PhAC treatments. The regulated proteins may favor PhAC degradation in CWs; however, the role of these proteins in degrading PhACs remains unknown; further biochemical studies should be conducted. This study indicated that C alternifolius can tolerate multiple PhACs. (C) 2016 Elsevier Ltd. All rights reserved.

分类号： X5

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