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CLC number: Q945.78

On-line Access: 2013-01-31

Received: 2012-08-04

Revision Accepted: 2013-01-17

Crosschecked: 2013-01-18

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Journal of Zhejiang University SCIENCE B 2013 Vol.14 No.2 P.106-114


Improved cadmium uptake and accumulation in the hyperaccumulator Sedum alfredii: the impact of citric acid and tartaric acid

Author(s):  Ling-li Lu, Sheng-ke Tian, Xiao-e Yang, Hong-yun Peng, Ting-qiang Li

Affiliation(s):  Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China

Corresponding email(s):   linglilulu@gmail.com, xyang571@yahoo.com

Key Words:  Hyperaccumulation, Cadmium, Organic acid, Sedum alfredii, Translocation, UptakeThe online version of this article contains supplementary materialssupplementary materials

Ling-li Lu, Sheng-ke Tian, Xiao-e Yang, Hong-yun Peng, Ting-qiang Li. Improved cadmium uptake and accumulation in the hyperaccumulator Sedum alfredii: the impact of citric acid and tartaric acid[J]. Journal of Zhejiang University Science B, 2013, 14(2): 106-114.

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author="Ling-li Lu, Sheng-ke Tian, Xiao-e Yang, Hong-yun Peng, Ting-qiang Li",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Improved cadmium uptake and accumulation in the hyperaccumulator Sedum alfredii: the impact of citric acid and tartaric acid
%A Ling-li Lu
%A Sheng-ke Tian
%A Xiao-e Yang
%A Hong-yun Peng
%A Ting-qiang Li
%J Journal of Zhejiang University SCIENCE B
%V 14
%N 2
%P 106-114
%@ 1673-1581
%D 2013
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B1200211

T1 - Improved cadmium uptake and accumulation in the hyperaccumulator Sedum alfredii: the impact of citric acid and tartaric acid
A1 - Ling-li Lu
A1 - Sheng-ke Tian
A1 - Xiao-e Yang
A1 - Hong-yun Peng
A1 - Ting-qiang Li
J0 - Journal of Zhejiang University Science B
VL - 14
IS - 2
SP - 106
EP - 114
%@ 1673-1581
Y1 - 2013
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B1200211

The elucidation of a natural strategy for metal hyperaccumulation enables the rational design of technologies for the clean-up of metal-contaminated soils. organic acid has been suggested to be involved in toxic metallic element tolerance, translocation, and accumulation in plants. The impact of exogenous organic acids on cadmium (Cd) uptake and translocation in the zinc (Zn)/Cd co-hyperaccumulator Sedum alfredii was investigated in the present study. By the addition of organic acids, short-term (2 h) root uptake of 109Cd increased significantly, and higher 109Cd contents in roots and shoots were noted 24 h after uptake, when compared to controls. About 85% of the 109Cd taken up was distributed to the shoots in plants with citric acid (CA) treatments, as compared with 75% within controls. No such effect was observed for tartaric acid (TA). Reduced growth under Cd stress was significantly alleviated by low CA. Long-term application of the two organic acids both resulted in elevated Cd in plants, but the effects varied with exposure time and levels. The results imply that CA may be involved in the processes of Cd uptake, translocation and tolerance in S. alfredii, whereas the impact of TA is mainly on the root uptake of Cd.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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[40]List of electronic supplementary materials

[41]Table S1 Cd speciation in the uptake solution with addition of different Cd and organic acid levels as calculated by Visual-Minteq 3.0

[42]Table S2 Cd speciation in the nutrient solution with addition of 100 µmol/L Cd and different citric acid or tartaric acid levels as calculated by Visual-Minteq 3.0

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