Thlaspi caerulescens

However, some plants can accumulate more than 0.1% of Pb, Co, Cr, and more than 1% of Mn, Ni and Zn in the shoots. These accumulator plants are called hyperaccumulators. To date, there are approximately 400 known metal hyperaccumulator plants in the world (Baker and Walker, 1989). Thlaspi caerulescens, Alyssum murale, A. lesbiacum, A. tenium are Zn and Cd hyperaccumulators. Brassica juncea, a high-biomass plant, can accumulate Pb, Cr(III), Cd, Cu, Ni, Zn, Sr, B and Se. Thlaspi caerulescens accumulates Ni. Hybrid poplar trees are reported to phytoremediate Cd and As contaminated soils. A Chinese brake fem, Pteris vittata, is an As hyperaccumulator (Ma et al., 2001). 

Kiipper H, Zhao F J, McGrath SP. Cellular compartmentation of zinc in leaves of the hyperaccumulator Thlaspi caerulescens. Plant Physiol 1999 119 305-311. 

Assun9ao, A. G. L., Da Costa Martins, P., De Folter, S., Vooijs, R., Schat, H., and Aarts, M. G. M., 2001, Elevated expression of metal transporter genes in three accessions of the metal hyperaccumulator Thlaspi caerulescens. Plant Cell Environ. 24 217-226. 

Deniau, A., Pieper, B., Lindhout, P., Aarts, M., and Schat, H., 2004, QTL mapping of cadmium accumulation in Thlaspi caerulescens, COST Action 859, P WG2 Workshop - Exploiting -omics approaches in phytotechnologies, p. 15. 

Frerot, H., Petit, C., Lefebvre, C., Gruber, W., Collin, C., and Escarre, J., 2003, Zinc and cadmium accumulation in controlled crosses between metallicolous and nonmetalbcolous populations of Thlaspi caerulescens (Brassicaceae), New Phytol. 157 643-648. 

Meerts, P., and Van Isacker, N., 1997, Heavy metal tolerance and accumulation in metallicolous and non-metaUicolous populations of Thlaspi caerulescens from continental Europe, Plant Ecol. 133 221-231. 

Keller, C., and Hammer, D. (2004). Metal availability and soil toxicity after repeated croppings of Thlaspi caerulescens in metal contaminated soils. Environ. Pollut. 131, 243—254. 

Schwartz, C., Morel, J. L., Saumier, S., Whiting, S. N., and Baker, A. J. M. (1999). Root architecture of the Zn-hyperaccumulator plant Thlaspi caerulescens as affected by metal origin, content and localisation in soil. Plant Soil 208, 103-115. 

Whiting, S. N., De Souza, M. P., and Terry, N. (2001b). Rhizosphere bacteria mobilize Zn for hyperaccumulation by Thlaspi caerulescens. Environ. Sci. Technol. 35, 3144-3150. 

Figure 7.1. Root of Thlaspi caerulescens with associated root hairs in close contact witli soil particles. (From Whiting et al., 2003.)...

Knight, B., Zhao, F. J., McGrath, S. P., and Shen, Z. G. (1997). Zinc and cadmium uptake by the hyperaccumulator Thlaspi caerulescens in contaminated soils and its effects on the concentrations and chemical speciation of metals in soil solution. Plant Soil 197, 71-78. 

Sterckeman, T., Perriguey, J., Cael, M., Schwartz, C., and Morel. J. L. (2004). Applying a mechanistic model to cadmium uptake by Zea mays and Thlaspi caerulescens consequences for the assessment of the soU quantity and capacity factors. Plant Soil 262. 289-302. 

Pence, N., Larsen, P., Ebbs, S., Letham, D., Lasat, M., Garvin, D., Eide, D., Kochian, L., 2000, The molecular physiology of heavy metal transport in the Zn/Cd hyperaccumulator Thlaspi caerulescens, Plant Biology, 97(9)4956 1960. 

McGrath, S.P., Shen, Z.G., Zhao, F.J., 1997. Heavy metal uptake and chemical changes in the rhizosphere of Thlaspi caerulescens and Thlaspi ochroleucum grown in contaminated soils. Plant Soil 188, 153-159. 

Whiting, S.N., Broadley, M.R., White, P.J., 2003. Applying a solute transfer model to phytoextraction zinc acquisition by Thlaspi caerulescens. Plant Soil 249, 45-56. 

Zhao, E.J., Hamon, R.E., McLaughlin, M.J., 2001. Root exudates of the hyperaccumulator Thlaspi caerulescens do not enhance metal mobilization. New Phytol. 151, 613-620. 

Saison, C., C. Schwartz, and J. L. Morel. 2004. Hyperaccumulation of metals by Thlaspi caerulescens as affected by root development and Cd-Zn/Ca-Mg interactions. Int. J. 

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