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BIODEGRADABLE CHELATING AGENT ETHYLENEDIAMINEDISUCCINIC ACID REDUCES UPTAKE OF COPPER THROUGH ALLEVIATION OF COPPER TOXICITY IN HYDROPONICALLY GROWN CHRYSANTHEMUM CORONARIUM L.

文献类型： 外文期刊

作者： Wei, Lan 1 ; Luo, Chunling 2 ; Wang, Chunchun 2 ; Li, Xiangdong 2 ; Shen, Zhenguo 2 ;

作者机构： 1.Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Peoples R China

2.Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Peoples R China; Guangdong Acad Agr Sci, Inst Soil & Fertilizer, Guangzhou 510640, Peoples R China; Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China

关键词： S;S-ethylenediaminedisuccinic acid;copper;chrysanthemum coronarium L.;Chelate;phytoextraction

期刊名称：ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY （ 影响因子：3.742； 五年影响因子：3.866 ）

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收录情况： SCI

摘要： Hydroponic cultures were conducted to investigate the effects of the biodegradable chelating agent S,S-ethylenediamine-disuccinic acid (EDDS) on the growth and copper uptake by garland chrysanthemum (Chrysanthemum coronarium L.), a plant species sensitive to soil chelate amendment. In the presence of 50 μmol/L Cu, the addition of EDDS increased shoot and root biomass and the vitality of cells in root tips and decreased the relative electrolyte leakage of root cells and the concentration of Cu in shoots. When the roots were pretreated with 65℃ hot water for 0.5 to 2 h or with 0.001 to 0.1 mol/L HC1 for 24 h before the exposure to 50 μmol/L Cu + 100 μmol/L EDDS, the concentration of Cu in shoots increased considerably compared with the plants without any pretreatment. A statistically significant correlation was found between the Cu concentrations in shoots and the relative electrolyte leakage of root cells. These results indicated that Cu-EDDS might be a less bioavailable form to plants and that some physiological damage to the roots led to enhanced accumulation of Cu in plant shoots.

  • 相关文献

[1]Copper accumulation and tolerance in Chrysanthemum coronarium L. and Sorghum sudanense L.. Wei, Lan,Shen, Zhenguo,Wei, Lan,Luo, Chunling,Li, Xiangdong.

[2]Physiological responses of Porphyra haitanensis (Rhodophyta) to copper and cadmium exposure. Zhu, Xifeng,Huang, Yanhua,Cao, Junming,Sun, Yuping,Chen, Bing,Chen, Xiaoying,Zou, Dinghui,Zou, Dinghui.

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