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| DOI: | 10.1046/j.1469-8137.2000.00657.x |
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| Web URL(s): | http://www.jstor.org/stable/view/2588927
Last checked: 07/16/2014
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http://www.jstor.org/stable/pdfplus/2588927.pdf
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| Publication Type:
| Refereed |
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| Author(s): | Hutchinson, Julian J.;
Young, Scott D.;
Mcgrath, Steve P.;
West, Helen M.;
Black, Colin R.;
Baker, Alan J. |
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| Author Affiliation: | Hutchinson, Young, West and Black: School of Biological Sciences, University of Nottingham, Sutton Bonington Campus, Sutton Boninton, UK; Mcgrath: Department of Soil Science, IACR-Rothamsted, Harpenden, Hertfordshire, UK; Baker: Department of Animal and Plant Science, University of Sheffield, Sheffield, UK |
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| Title: | Determining uptake of 'non-labile' soil cadmium by Thlaspi caerulescens using isotopic dilution techniques |
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| Section: | Research
Other records with the "Research" Section
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| Source: | New Phytologist. Vol. 146, No. 3, June 2000, p. 453-460. |
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| Publishing Information: | Oxford, England: Cambridge University Press. |
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| # of Pages: | 8 |
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| Related Web URL: | http://www.jstor.org/stable/info/2588927
Last checked: 07/16/2014
Notes: Abstract only |
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| Keywords: | TIC Keywords: Uptake; Cadmium; Thlaspi caerulescens; Soil reclamation; Soil binding; Physical properties of soil; Soil contamination; Heavy metals; Land reclamation; Mine soils; Mathematical equations; Zinc; Lead; Bioassay
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| Abstract/Contents: | We assessed the ability of several populations of the metal-hyperaccumulator species, Thlapi caerulescens, to mobilize non-labile cadmium in soils historically contaminated by Pb/Zn mine spoil or sewage sludge. Radio-labile Dc was determined chemically as an 'E-value', [Cdâ] and biologically as an 'L-value', [Cd^D[L]. For comparison, chloride-extractable Cd, [Cd^D[c^D[h^D[lâ^D[r], was also determined using 1 M CaClâ as a single=step soild extractant. Values of [Cd^D[L] were measured for six populations of T. caerulescens that varied substantially in their ability to assimilate soil Cd, and a non-accumulator species with a similiar growth habit, Lepidium heterophyllum. Seeds were sown in soil spiked with Âčâ°âčCd and grown for 9-12 wk in a controlled environment room. Values of [Cd^D[L] were determined from the specific activity of Âčâ°âčCd and concentration of Cd in the plant leaves. For the six soils studied, [Cdâ] ranged from 4.9 to 49% of total soil Cd [Cd^D[T]. Values of [Cd^D[L] were, in general, in close agreement with both [Cdâ] and [Cd^D[c^D[h^D[lâ^D[r] and substantially less than [Cd^D[T]. However, [Cd^D[L] showed no correlation with the concentration of Cd in plant tissue, [Cd^D[s^D[hââ^D[t]. This suggests that, in the soils studied, T. caeruescens did not bobilize non-labile soild Cd by producing root exudates or altering rhizosphere pH. The results imply that there may be significant restrictions to metal bioavailability, even to hyperaccumulator species, in heavily contaminated soils in which a large proportion of the metal may be present in 'non-labile' forms. |
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| Language: | English |
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| References: | 35 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hutchinson, J. J., S. D. Young, S. P. Mcgrath, H. M. West, C. R. Black, and A. J. Baker. 2000. Determining uptake of 'non-labile' soil cadmium by Thlaspi caerulescens using isotopic dilution techniques. New Phytol. 146(3):p. 453-460. |
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| DOI: 10.1046/j.1469-8137.2000.00657.x |
| Web URL(s):
http://www.jstor.org/stable/view/2588927
Last checked: 07/16/2014
Access conditions: Item is within a limited-access website
http://www.jstor.org/stable/pdfplus/2588927.pdf
Last checked: 07/16/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .N38 |
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