Subcellular distribution of cadmium in mining ecotype Sedum alfredii

被引：0

作者：

Ni, TH ^{[1
]}

Wei, YZ ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Environm & Resources, Hangzhou 310029, Peoples R China

来源：

ACTA BOTANICA SINICA | 2003年 / 45卷 / 08期

关键词：

cadmium (Cd); Sedum alfredii; subcellular distribution;

D O I：

暂无

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The mining ecotype Sedum alfredii Hance could tolerate and grow normally in a nutritive solution containing cadmium (Cd) as high as 400 mumol/L. Under such a high Cd concentration, the subcellular accumulation of Cd in root, stem and leaf of this plant was found to be the highest in the cell wall, less in the soluble fraction and lowest in the cell organs. The mode of subcellular distribution of Cd in the mining ecotype S. alfredii was similar to other hyper accumulators of heavy metals, in which Cd was distributed more in the aerial part of plant. The results suggest that the mining ecotype S. alfredii is a new species of Cd hyperaccumulator.

引用

页码：925 / 928

页数：4

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