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Received: 2007-12-24

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Journal of Zhejiang University SCIENCE B 2008 Vol.9 No.3 P.265-270


Accumulation and distribution of arsenic and cadmium by tea plants

Author(s):  Yuan-zhi SHI, Jian-yun RUAN, Li-feng MA, Wen-yan HAN, Fang WANG

Affiliation(s):  Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China

Corresponding email(s):   shiyz@mail.tricaas.com

Key Words:  Tea plant, Arsenic (As), Cadmium (Cd), Absorption, Accumulation

Yuan-zhi SHI, Jian-yun RUAN, Li-feng MA, Wen-yan HAN, Fang WANG. Accumulation and distribution of arsenic and cadmium by tea plants[J]. Journal of Zhejiang University Science B, 2008, 9(3): 265-270.

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%T Accumulation and distribution of arsenic and cadmium by tea plants
%A Yuan-zhi SHI
%A Jian-yun RUAN
%A Li-feng MA
%A Wen-yan HAN
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B0710631

T1 - Accumulation and distribution of arsenic and cadmium by tea plants
A1 - Yuan-zhi SHI
A1 - Jian-yun RUAN
A1 - Li-feng MA
A1 - Wen-yan HAN
A1 - Fang WANG
J0 - Journal of Zhejiang University Science B
VL - 9
IS - 3
SP - 265
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Y1 - 2008
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.B0710631

It is important to research the rules about accumulation and distribution of arsenic and cadmium by tea plants, which will give us some scientific ideas about how to control the contents of arsenic and cadmium in tea. In this study, by field investigation and pot trial, we found that mobility of arsenic and cadmium in tea plants was low. Most arsenic and cadmium absorbed were fixed in feeding roots and only small amount was transported to the above-ground parts. Distribution of arsenic and cadmium, based on their concentrations of unit dry matter, in tea plants grown on un-contaminated soil was in the order: feeding roots>stems≈main roots>old leaves>young leaves. When tea plants were grown on polluted soils simulated by adding salts of these two metals, feeding roots possibly acted as a buffer and defense, and arsenic and cadmium were transported less to the above-ground parts. The concentration of cadmium in soil significantly and negatively correlated with chlorophyll content, photosynthetic rate, transpiration rate and biomass production of tea plants.

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


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