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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.7 P.643~648

http://doi.org/10.1631/jzus.2005.A0643


Effects of zinc on cadmium uptake by spring wheat (Triticum aestivum, L.): long-time hydroponic study and short-time 109Cd tracing study


Author(s):  ZHAO Zhong-qiu, ZHU Yong-guan, CAI Yun-long

Affiliation(s):  College of Environmental Sciences, Peking University, Beijing 100871, China; more

Corresponding email(s):   zq_zhao@pku.edu.cn

Key Words:  Spring wheat, Effects of Zn, Cd uptake, 109Cd tracing


ZHAO Zhong-qiu, ZHU Yong-guan, CAI Yun-long. Effects of zinc on cadmium uptake by spring wheat (Triticum aestivum, L.): long-time hydroponic study and short-time 109Cd tracing study[J]. Journal of Zhejiang University Science A, 2005, 6(7): 643~648.

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author="ZHAO Zhong-qiu, ZHU Yong-guan, CAI Yun-long",
journal="Journal of Zhejiang University Science A",
volume="6",
number="7",
pages="643~648",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.A0643"
}

%0 Journal Article
%T Effects of zinc on cadmium uptake by spring wheat (Triticum aestivum, L.): long-time hydroponic study and short-time 109Cd tracing study
%A ZHAO Zhong-qiu
%A ZHU Yong-guan
%A CAI Yun-long
%J Journal of Zhejiang University SCIENCE A
%V 6
%N 7
%P 643~648
%@ 1673-565X
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.A0643

TY - JOUR
T1 - Effects of zinc on cadmium uptake by spring wheat (Triticum aestivum, L.): long-time hydroponic study and short-time 109Cd tracing study
A1 - ZHAO Zhong-qiu
A1 - ZHU Yong-guan
A1 - CAI Yun-long
J0 - Journal of Zhejiang University Science A
VL - 6
IS - 7
SP - 643
EP - 648
%@ 1673-565X
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.A0643


Abstract: 
To investigate effects of Zn on cd uptake by spring wheat (Triticum aestivum, L.) in solution culture, long-time hydroponic experiment (1 month) (Experiment 1) and short-time Cd isotope (109Cd) tracing experiment (24 h) (Experiment 2) were conducted. In Experiment 1, spring wheat (cv. Brookton) was grown in nutrient solution at uniform cadmium concentration of 20 µmol/L and 10 zinc concentrations (0, 1, 5, 10, 20, 100, 200, 500, 1000, 2000 µmol/L). In Experiment 2, spring wheat seedlings, pre-cultivated in complete nutrient solution, were treated with 109Cd of uniform activity and the same series of Zn concentrations as those in Experiment 1 for 24 h. Cd concentrations in shoots and roots in Experiment 1 increased marginally but not consistently with Zn increasing at Zn rates of 1~200 µmol/L, and then decreased significantly at high rates (>200 µmol/L). In Experiment 2, the response of 109Cd activities in shoots and roots to increasing Zn was greatly similar to the response of Cd concentrations to Zn increasing in Experiment 1. The results of the two experiments indicated that the short-time and long-time exposure of spring wheat to Zn had similar effects on Cd accumulation.

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