1469-8137/asset/cover.gif?v=1&s=570a3a280b205b8cd6b43e7a8ee052e7536c7006 "New Phytologist")
Department of Biology, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
1469-8137/asset/NPH_left.gif?v=1&s=08bb9ae88048d5716b3d3495e7b2fcfe48536ab2)
You have full text access to this OnlineOpen article
Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens J. & C. Presl (Brassicaceae)
Article first published online: 28 APR 2006
DOI: 10.1111/j.1469-8137.1994.tb04259.x
Additional Information
How to Cite
BAKER, A. J. M., REEVES, R. D. and HAJAR, A. S. M. (1994), Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens J. & C. Presl (Brassicaceae). New Phytologist, 127: 61–68. doi: 10.1111/j.1469-8137.1994.tb04259.x
Publication History
- Issue published online: 28 APR 2006
- Article first published online: 28 APR 2006
- Received 27 September 1993; accepted 19 January 1994
- Abstract
- References
- Cited By
Keywords:
- Thlaspi caerulescens;
- heavy metal accumulation;
- zinc hyperaccumulation;
- heavy metal tolerance
SUMMARY
Heavy metai uptake, accumulation and tolerance were investigated in five British populations of the metallophyte Thlaspi caerulescens from metalliferous sites from the north and south Pennines orefields. Analysis of field samples showed mean shoot Zn, Pb and Cd concentrations of up to 21000, 660 and 164/zMug g-1 respectively. A solution culture experiment designed to investigate both tolerance and metal accumulation is reported. Indices of tolerance of five populations to 12 metals (Ag, Al, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Zn) showed few population differences but unexpectedly high tolerance to metals not present at elevated concentrations in the parent soils. This was paralleled by exceptionally high uptakes of all metals studied. Zn, Cd, Co, Mn and Ni were readily transported to the shoot whereas Al, Cr Cu, Fe and Pb were predominantly immobilized in the roots. The data suggest common mechanisms of absorption and transport of several metals in this species.