Hyperaccumulation of zinc by Corydalis davidii in Zn-polluted soils

被引：25
作者：
Lin, Wenjie [1 ,2 ,3 ]
Xiao, Tangfu [1 ]
Wu, Yunying [2 ]
Ao, Ziqiang [3 ]
Ning, Zengping [1 ]
机构：
[1] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China
[2] Hanshan Normal Univ, Chaozhou 521041, Peoples R China
[3] Guizhou Inst Environm Sci Res & Design, Guiyang 550002, Peoples R China
来源：
CHEMOSPHERE | 2012年 / 86卷 / 08期
关键词：
Corydalis davidii; Zn-hyperaccumulator; Phytoremediation; Antioxidant enzyme; Tolerance; METAL ACCUMULATION; SMELTING AREAS; HEZHANG COUNTY; HEAVY-METALS; PHYTOREMEDIATION; CADMIUM; GUIZHOU; PLANTS; L; CD;
D O I：
10.1016/j.chemosphere.2011.10.060
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A field survey was conducted to identify potential Zn accumulators from an artisanal Zn smelting area in southwest China's Guizhou Province. Hydroponic and soil culture experiments were performed to investigate the accumulation ability of Zn in Corydalis davidii. Zn concentrations in roots, stems and leaves of C. davidii in the smelting site were 1.1-3.5,1.2-11.2, and 3.3-14 mg g(-1), respectively, whereas Zn concentrations in roots, stems and leaves of C. davidii in the contaminated site impacted by the Zn smelting were 1.0-2.4, 1.9-6.5, and 3.0-1.1 mg g(-1) respectively. Zn concentrations in leaves and stems of C. davidii were observed at above 10 mg g(-1) that refers to the threshold of Zn hyperaccumulator. The concentration distribution of Zn in C. davidii was leaf > stem > root, and the Zn bioaccumulation factors of C. davidii were above 1. It is concluded that C. davidii has high tolerance to concentrate Zn stress, and that C. davidii is a newly discovered Zn-hyperaccumulator with high biomass in the aboveground parts. Based on the cultivation experiments. C. davidii could reduce Zn concentration by 26.6, 21.2, and 10.2 mg kg(-1)yr(-1) by phytoextraction from the smelting slag, Zn-contaminated soil, and background soil, respectively. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：837 / 842
页数：6
相关论文
共 39 条
[1]   Zinc tolerance and accumulation in Pteris vittata L. and its potential for phytoremediation of Zn- and As-contaminated soil [J].
An, ZZ ;
Huang, ZC ;
Lei, M ;
Liao, XY ;
Zheng, YM ;
Chen, TB .
CHEMOSPHERE, 2006, 62 (05) :796-802
[2]   Effect of salicylic and abscisic acid administered through detached tillers on antioxidant system in developing wheat grains under heat stress [J].
Asthir, Bavita ;
Kaur, Satvir ;
Mann, Satwinder K. .
ACTA PHYSIOLOGIAE PLANTARUM, 2009, 31 (05) :1091-1096
[3]  
BAKER A J M, 1989, Biorecovery, V1, P81
[4]   Environmental contamination of heavy metals from zinc smelting areas in Hezhang County, western Guizhou, China [J].
Bi, Xiangyang ;
Feng, Xinbin ;
Yang, Yuangen ;
Qiu, Guangle ;
Li, Guanghui ;
Li, Feili ;
Liu, Taoze ;
Fu, Zhiyou ;
Jin, Zhisheng .
ENVIRONMENT INTERNATIONAL, 2006, 32 (07) :883-890
[5]   Cadmium tolerance and antioxidative defenses in hairy roots of the cadmium hyperaccumulator, Thlaspi caerulescens [J].
Boominathan, R ;
Doran, PM .
BIOTECHNOLOGY AND BIOENGINEERING, 2003, 83 (02) :158-167
[6]  
BRADFORD MM, 1976, ANAL BIOCHEM, V72, P248, DOI 10.1016/0003-2697(76)90527-3
[7]   Revisiting the plant hyperaccumulation criteria to rare plants and earth abundant elements [J].
Branquinho, Cristina ;
Serrano, Helena Cristina ;
Pinto, Manuel Joao ;
Martins-Loucao, Maria Amelia .
ENVIRONMENTAL POLLUTION, 2007, 146 (02) :437-443
[8]   Phytomining [J].
Brooks, RR ;
Chambers, MF ;
Nicks, LJ ;
Robinson, BH .
TRENDS IN PLANT SCIENCE, 1998, 3 (09) :359-362
[9]   Effects of silvicultural treatments on survival and growth of trees planted on reclaimed mine lands in the Appalachians [J].
Casselman, CN ;
Fox, TR ;
Burger, JA ;
Jones, AT ;
Galbraith, JM .
FOREST ECOLOGY AND MANAGEMENT, 2006, 223 (1-3) :403-414
[10]   Phytoremediation of soil metals [J].
Chaney, RL ;
Malik, M ;
Li, YM ;
Brown, SL ;
Brewer, EP ;
Angle, JS ;
Baker, AJM .
CURRENT OPINION IN BIOTECHNOLOGY, 1997, 8 (03) :279-284
1234