Interactions between cadmium and zinc in uptake, accumulation and bioavailability for Salix integra with respect to phytoremediation
文献类型： 外文期刊
作者： Yang, Weidong 1 ; Wang, Yuyan 2 ; Liu, Di 2 ; Hussain, Bilal 1 ; Ding, Zheli 3 ; Zhao, Fengliang 4 ; Yang, Xiaoe 1 ;
作者机构： 1.Zhejiang Univ, Coll Environm & Resource Sci, Minist Educ, Key Lab Environm Remediat & Ecol Hlth, Hangzhou, Peoples R China
2.Jiujiang Univ, Jiangxi Yangtze River Econ Zone Res Inst, Jiujiang 332005, Peoples R China
3.CATAS, Haikou Expt Stn, Haikou, Hainan, Peoples R China
4.CATAS, Environm & Plant Protect Inst, Minist Agr, Danzhou Sci Observing & Expt Stn Agroenvironm, Haikou, Hainan, Peoples R China
关键词： Salix integra; cadmium; zinc; interaction; phytoextraction
期刊名称：INTERNATIONAL JOURNAL OF PHYTOREMEDIATION （ 影响因子：3.212； 五年影响因子：3.275 ）
ISSN： 1522-6514
年卷期： 2020 年 22 卷 6 期
页码：
收录情况： SCI
摘要： The willow (Salix spp.) is a potential accumulator of cadmium (Cd)/zinc (Zn), and the interaction between Cd and Zn is an important factor influencing their phytoextraction potentials. In this study, interactions between Cd and Zn in uptake, accumulation and bioavailability for Salix integra clone SI63 were investigated through nutrient solution and soil culture methods. The result of the soil culture showed that Cd had additive effects for Zn-caused biomass reduction. The result from nutrient solution indicated that added Zn showed antagonistic (low Cd level) or synergistic (moderate and high Cd levels) effects on shoot Cd accumulation and antagonistic effects on root Cd accumulation. Irrespective of nutrient solution or soil culture experiment, Cd addition always had antagonistic effects on Zn accumulation in both shoots and roots. Under Cd10Zn50 condition, the clone accumulated higher Cd and Zn concentrations (95 mu g g(-1) Cd and 165 mu g g(-1) Zn) in shoots. Cd slightly increased bioavailable Zn in the rhizosphere, and EDTA well predicted bioavailable Cd and Zn in the rhizosphere. Interactions of Cd-Zn markedly changed their respective phytoextraction potentials, especially for Zn. This result will provide a new insight into improving phytoextraction potentials of both Cd and Zn using willows through applying metal interactions.
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