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	Evaluation of an electrostatic toxicity model for predicting Ni2+ toxicity to barley root elongation in hydroponic cultures and in soils
	Wang, Peng1; Kopittke, Peter M.2; De Schamphelaere, Karel A. C.3; Zhao, Fang-Jie4; Zhou, Dong-Mei1; Lock, Koen2; Ma, Yi-Bing5; Peijnenburg, Willie J. G. M.6; McGrath, Steve P.4
刊名	NEW PHYTOLOGIST
	2011
卷号	192期号:2页码:414-427
关键词	electrostatic toxicity model (ETM) magnesium (Mg) nickel (Ni) osmotic stress root growth surface potential
ISSN号	0028-646X
DOI	10.1111/j.1469-8137.2011.03806.x
通讯作者	Zhou, Dong-Mei(dmzhou@issas.ac.cn)
英文摘要	Assessing environmental risks of metal contamination in soils is a complex task because the biologically effective concentrations of metals in soils vary widely with soil properties. The factors influencing the toxic effect of nickel (Ni) on root growth of barley (Hordeum vulgare) were re-evaluated using published data from both soil and hydroponic cultures. The electrical potential (psi(o)(0)) and ion activities ({I-z}(0)(o)) at the outer surfaces of root-cell plasma membranes (PMs) were computed as the basis of the re-evaluation. The reanalyses demonstrated that root growth was related to: the Ni2+ activity at the PM surface, ({Ni2+}(0)(o)); calcium (Ca) deficiency (related to {Ca2+}(0)(o)); osmotic effects; and modification of intrinsic Ni2+ toxicity by magnesium (Mg2+; this appeared to exert an intrinsic (specific) ameliorating effect on intrinsic Ni2+ toxicity). Electrostatic toxicity models (ETM) were developed to relate root growth to these factors (R-2 > 0.751). Based on the ETM developed in soil culture and a Ni2+ solid-solution partitioning model, critical metal concentrations in soils linked to a biological effect were well predicted for 16 European soils with a wide range of properties, indicating the potential utility of ETM in risk assessment of metals in terrestrial ecosystems.
收录类别	SCI
WOS关键词	SURFACE ELECTRICAL POTENTIALS ; PLANT-CELL MEMBRANES ; BIOTIC LIGAND MODEL ; ORGANIC-MATTER ; ION CONCENTRATIONS ; PHYTOTOXICITY ; NICKEL ; BIOAVAILABILITY ; CALCIUM ; SPECIATION
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000295282700015
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558905
专题	南京土壤研究所
通讯作者	Zhou, Dong-Mei
作者单位	1.Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Univ Queensland, Sch Agr & Food Sci, St Lucia, Qld 4072, Australia 3.Univ Ghent, Lab Environm Toxicol & Aquat Ecol, B-9000 Ghent, Belgium 4.Rothamsted Res, Harpenden AL5 2JQ, Herts, England 5.Chinese Acad Agr Sci, Beijing 10081, Peoples R China 6.Netherlands & Natl Inst Publ Hlth & Environm RIVM, NL-3720 Bilthoven, Netherlands
推荐引用方式 GB/T 7714	Wang, Peng,Kopittke, Peter M.,De Schamphelaere, Karel A. C.,et al. Evaluation of an electrostatic toxicity model for predicting Ni2+ toxicity to barley root elongation in hydroponic cultures and in soils[J]. NEW PHYTOLOGIST,2011,192(2):414-427.
APA	Wang, Peng.,Kopittke, Peter M..,De Schamphelaere, Karel A. C..,Zhao, Fang-Jie.,Zhou, Dong-Mei.,...&McGrath, Steve P..(2011).Evaluation of an electrostatic toxicity model for predicting Ni2+ toxicity to barley root elongation in hydroponic cultures and in soils.NEW PHYTOLOGIST,192(2),414-427.
MLA	Wang, Peng,et al."Evaluation of an electrostatic toxicity model for predicting Ni2+ toxicity to barley root elongation in hydroponic cultures and in soils".NEW PHYTOLOGIST 192.2(2011):414-427.

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