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Copper accumulation and tolerance in Chrysanthemum coronarium L. and Sorghum sudanense L.

文献类型： 外文期刊

作者： Wei, Lan 1 ; Luo, Chunling 3 ; Li, Xiangdong 3 ; Shen, Zhenguo 1 ;

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

2.Guangdong Acad Agr Sci, Inst Soil & Fertilizer, Guangzhou 510640, Peoples R China

3.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China

关键词： Carrier Proteins;Cell Wall;Chlorophyll;Chrysanthemum;Copper;Hydroponics;载体蛋白质类;细胞壁;叶绿素;铜;无土栽培;植物根;植物芽;巯基化合物;糖醛酸类

期刊名称：ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.804； 五年影响因子：3.399 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： In the present study, the growth of Chrysanthemum coronarium L. and Sorghum sudanense L. and their copper accumulation were studied using hydroponic experiments. Results showed that the root elongation, dry biomass yield, and chlorophyll content in both plant species decreased significantly with the increasing level of Cu in solution. The concentrations of Cu in the two plants increased greatly with the increasing Cu level in the treatments. However, most of the Cu was accumulated in roots, and only a small portion was translocated into shoots. Compared with S. sudanense, the shoots of C. coronarium had a significantly higher concentration of Cu. The total amount and percentage of water-soluble Cu, and the nonprotein thiol were also higher in the shoots of C. coronarium. In the roots, however, S. sudanense accumulated more Cu than C. coronarium. The treatments with 5 to 50 mumol L(-1) Cu significantly increased the uronic acid content in the roots of S. sudanens, but did not have any significant effectfor C. coronarium. Higher concentrations of Cu bound to the cell wall and uronic acid in the roots of S. sudanense were speculated to be the main reason to restrain Cu translocation from roots to shoots.

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