Metal accumulation and competitive ability in metallicolous and non-metallicolous Thlaspi caerulescens fed with different Zn salts
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
A non-metallicolous (NM) ecotype of Thlaspi caerulescens from Luxembourg and a metallicolous (M) ecotype from Prayon (E Belgium) are compared for growth and Zn, Mg and Ca accumulation in shoot in a pot experiment in six soil conditions with contrasting Zn availability. The soils were spiked with 2000 mg kg−1 Zn as monometallic salts of contrasting solubility. Both ecotypes were grown in pure and mixed culture in order to assess competitive ability. Both ecotypes had similar growth on all substrates except the one spiked with Zn-sulphate, where ecotype M grew better and had higher competitive ability than ecotype NM. Ecotype NM had higher Zn concentrations than M in all treatments and the difference varied with Zn availability, being largest with Zn-oxide (NM: 31 300 mg kg−1 Zn; M: 5900 mg kg−1 Zn). The results thus indicate that ecotype NM has constitutively higher Zn uptake capacity and may have a higher ability to obtain Zn from specific Zn salts. However, ecotype NM does not appear to be more efficient in obtaining Zn from little available forms. Mg concentration was also higher in ecotype NM. Zn mass per plant was higher in ecotype NM compared to ecotype M in all substrates except Zn-sulphate where the reverse was true. Accordingly, ecotype NM could prove to be a better phytoextractor of Zn for phytoremediation, except in substrates with low pH and high concentration of free Zn in the soil solution.
- Assunçao A G L, De 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.
- Baker A J M, Reeves R D and Hajar A S M 1994Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens J. et C. Presl (Brassicaceae). New Phytol. 127, 61–68.
- Brown S L, Chaney R L, Angle J S and Baker A J M 1995 Zinc and cadmium uptake by hyperaccumulator Thlaspi caerulescens grown in nutrient solution. Soil Sci. Soc. Am. J. 59, 125–133.
- Cottenie A, Verloo M, Kiekens L, Velghe G and Camerlynck R 1982 Chemical analysis of plants and soils. Lab. Analytical and Agrochemistry State University, Ghent, B.
- Escarré J, Lefèbvre C, Gruber W, Leblanc M, Lepart J, Rivière Y and Delay B 2000 Zinc and cadmium hyperaccumulation by Thlaspi caerulescens from metalliferous and nonmetalliferous sites in the Mediterranean area: implications for phytoremediation. New Phytol. 145, 429–437. CrossRef
- 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 concentration and chemical speciation of metals in soil solution. Plant Soil 197, 71–78.
- Lasat M M, Baker A J M and Kochian L V 1996 Physiological characterization of root Zn2+ absorption and translocation to shoots in Zn hyperaccumulator and nonaccumulator species of Thlaspi. Plant Physiol. 112, 1712–1722.
- Lasat M M, Pence N S, Garvin D F, Ebbs S D and Kochian L V 2000 Molecular physiology of zinc transport in the Zn hyperaccumulator Thlaspi caerulescens. J. Exp. Bot. 51, 71–79. CrossRef
- Lloyd-Thomas D H 1995 Heavy metal hyperaccumulation by Thlaspi caerulescens. Ph.D. thesis, Univ. Sheffield, UK.
- Luo Y M, Christie P and Baker A J M 2000 Soil solution Zn and pH dynamics in non-rhizosphere soil and in the rhizosphere of Thlaspi caerulescens. Chemosphere 41, 161–164.
- Marschner H 1995 Mineral Nutrition of Higher Plants. Academic Press, London, UK.
- McGrath S P, Shen Z G and 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.
- Meerts P and Van Isacker N 1997 Heavy metal tolerance and accumulation in metallicolous and non-metallicolous populations of Thlaspi caerulescens from continental Europe. Plant Ecol. 133, 221–231.
- Olsen S R 1972 Micronutrient interactions. In Micronutrients in agriculture. Eds J J Mortveldt, P M Giordano and W L Lindsay. Pp 243–264. Soil Science Society of America, Madison, WI.
- Pollard A J and Baker A J M 1996 Quantitative genetics of zinc hyperaccumulation in Thlaspi caerulescens. New Phytol. 132, 113–118.
- Reeves R D, Schwartz C, Morel J L and Edmondson J 2001 Distribution and metal-accumulating behavior of Thlaspi caerulescens and associated metallophytes in France. Int. J. Phytoremediation, 3: 145–172.
- Schwartz C, Morel J-L, Saumier S, Whiting S N and Baker A J M 1999 Root development of the zinc-hyperaccumulator plant Thlaspi caerulescens as affected by metal origin, content and localisation in soil. Plant Soil 208, 103–115.
- Shaul O, Hilgemann D W, De Almeida-Engler J, Van Montagu M, Inze D and Galili G 1999 Cloning and characterization of a novel Mg2+/H+ exchanger. EMBO J. 18, 3973–3980.
- Shen Z G, Zhao F J and McGrath S P 1997 Uptake and transport of zinc in the hyperaccumulator Thlaspi caerulescens and the nonhyperaccumulator Thlaspi ochroleucum. Plant Cell Environ. 20, 898–906.
- Tolra R P, Poschenrieder C and Barcelo J 1996 Zinc hyperaccumulation in Thlaspi caerulescens. I. Influence on growth and mineral nutrition. J Plant Nutr. 19, 1531–1540.
- Whiting S N, Leake J R, McGrath S P, Baker A J M2000 Positive response to Zn and Cd by roots of the Zn and Cd hyperaccumulator Thlaspi caerulescens. New Phytol. 145, 199–210.
- Whiting S N, Leake J R, McGrath S P and Baker A J M 2001 Zinc accumulation by Thlaspi caerulescens from soils with different Zn availability: a pot study. Plant Soil 236, 11–18.
- Zhao E J, Hamon R E and McLaughlin M J 2001 Root exudates of the hyperaccumulator Thlaspi caerulescens do not enhance metal mobilisation. New Phytol. 151, 613–620.
- Metal accumulation and competitive ability in metallicolous and non-metallicolous Thlaspi caerulescens fed with different Zn salts
Plant and Soil
Volume 249, Issue 1 , pp 1-8
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
- Additional Links
- heavy metals
- Zn availability
- Zn–Mg interaction
- Industry Sectors