Physiological and Antioxidant Responses in Wheat (Triticum aestivum) to HHCB in Soil

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• 作者：Cuihong Chen ; Zhang Cai
• 关键词：Wheat (Triticum aestivum) ; HHCB ; Oxidative stress ; Antioxidant enzyme
• 刊名：Bulletin of Environmental Contamination and Toxicology
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：95
• 期：2
• 页码：272-277
• 全文大小：499 KB
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• 作者单位：Cuihong Chen (1)
  Zhang Cai (1)
  
  1. Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
  
• 刊物主题：Pollution, general; Environmental Health; Ecotoxicology; Soil Science & Conservation; Environmental Chemistry; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution;
• 出版者：Springer US
• ISSN：1432-0800

文摘

Seedlings of wheat (Triticum aestivum) were exposed in soil to the polycyclic musk chemical, 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzopyran (HHCB) for 21?days, to evaluate its effect upon chlorophyll (CHL), lipid peroxidation and the antioxidant system. The content of CHL in leaves was inhibited significantly after 14- and 21-days exposures, whereas it was significantly induced by a low level of HHCB after a 7-days exposure. The content of malondialdehyde (MDA) in wheat leaves increased with an increase in the concentration of HHCB in soil, indicating that oxidative stress could be induced by HHCB. Moreover, HHCB exposure induced significant antioxidant responses in wheat. The activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) in wheat leaves were induced by HHCB after 14 and 21?days of exposure. However, the changing trend of the antioxidant enzymes in wheat roots was different from that in leaves. The results suggested that the assayed parameters of T. aestivum could be used as responsive biomarkers for oxidative stress in the soil environment.