Physiological response to cadmium stress in kenaf (Hibiscus cannabinus L.) seedlings

文献类型： 外文期刊

第一作者： Deng, Yong

作者： Deng, Yong;Li, Defang;Huang, Yumin;Huang, Siqi

作者机构：

关键词： Kenaf;Cadmium stress;Antioxidant system

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）

ISSN： 0926-6690

年卷期： 2017 年 107 卷

页码：

收录情况： SCI

摘要： Kenaf (Hibiscus cannabinus) has the potential to treat widespread heavy-metal contamination, as well as achieving high economic benefits. To investigate the physiological mechanism of kenaf in response to cadmium stress, China Kenaf 13 was grown in a hydroponic system and treated with various Cd concentrations (10, 50, 100, 150, and 200 umol L-1) and different time (1-6 days). The results show that the malondialdehyde (MDA) content was positively-correlated with Cd concentration and stress time. Cd stress of low-concentration had a stimulated effect on kenaf seedlings, with increased ascorbate (AsA) and reduced glutathione (GSH) contents as well as enhanced superoxide dismutase (SOD) and peroxidase (POD) activities. While under Cd treatment with high-concentration, SOD and POD activities were inhibited, which perhaps accounted for the oxidative damages. SOD seemed more sensitive to Cd stress than POD. A key target for kenaf breeding programs to treat contaminated soils is to select new genotypes with higher activities of SOD and POD.

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