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Plant Cd2+ and Zn2+ status effects on root and shoot heavy metal accumulation in Thlaspi caerulescens.
New Phytol. 2007; 175(1):51-58.NP

Abstract

* In this study we address the impact of changes in plant heavy metal, (i.e. zinc (Zn) and cadmium (Cd)) status on metal accumulation in the Zn/Cd hyperaccumulator, Thlaspi caerulescens. * Thlaspi caerulescens plants were grown hydroponically on both high and low Zn and Cd regimes and whole-shoot and -root metal accumulation, and root (109)Cd(2+) influx were determined. * High-Zn-grown (500 microm Zn) plants were found to be more Cd-tolerant than plants grown in standard Zn conditions (1 microm Zn). Furthermore, shoot Cd accumulation was significantly greater in the high-Zn-grown plants. A positive correlation was also found between shoot Zn accumulation and increased plant Cd status. Radiotracer (109)Cd root flux experiments demonstrated that high-Zn-grown plants maintained significantly higher root Cd(2+) influx than plants grown on 1 microm Zn. It was also found that both nickel (Ni) and copper (Cu) shoot accumulation were stimulated by high plant Zn status, while manganese (Mn) accumulation was not affected. * A speculative model is presented to explain these findings, suggesting that xylem loading may be one of the key sites responsible for the hyperaccumulation of Zn and Cd accumulation in Thlaspi caerulescens.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Papoyan A
US Plant, Soil and Nutrition Laboratory, United States Department of Agriculture, Agricultural Research Service, Cornell University, Ithaca, New York 14853, USA.
Piñeros M
US Plant, Soil and Nutrition Laboratory, United States Department of Agriculture, Agricultural Research Service, Cornell University, Ithaca, New York 14853, USA.
Kochian LV
US Plant, Soil and Nutrition Laboratory, United States Department of Agriculture, Agricultural Research Service, Cornell University, Ithaca, New York 14853, USA.

MeSH

CadmiumCadmium RadioisotopesKineticsMetals, HeavyPlant LeavesPlant RootsPlant ShootsThlaspiZinc

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17547666

Citation

Papoyan, Ashot, et al. "Plant Cd2+ and Zn2+ Status Effects On Root and Shoot Heavy Metal Accumulation in Thlaspi Caerulescens." The New Phytologist, vol. 175, no. 1, 2007, pp. 51-58.
Papoyan A, Piñeros M, Kochian LV. Plant Cd2+ and Zn2+ status effects on root and shoot heavy metal accumulation in Thlaspi caerulescens. New Phytol. 2007;175(1):51-58.
Papoyan, A., Piñeros, M., & Kochian, L. V. (2007). Plant Cd2+ and Zn2+ status effects on root and shoot heavy metal accumulation in Thlaspi caerulescens. The New Phytologist, 175(1), 51-58. https://doi.org/10.1111/j.1469-8137.2007.02073.x
Papoyan A, Piñeros M, Kochian LV. Plant Cd2+ and Zn2+ Status Effects On Root and Shoot Heavy Metal Accumulation in Thlaspi Caerulescens. New Phytol. 2007;175(1):51-58. PubMed PMID: 17547666.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Plant Cd2+ and Zn2+ status effects on root and shoot heavy metal accumulation in Thlaspi caerulescens. AU - Papoyan,Ashot, AU - Piñeros,Miguel, AU - Kochian,Leon V, PY - 2007/6/6/pubmed PY - 2007/10/30/medline PY - 2007/6/6/entrez SP - 51 EP - 58 JF - The New phytologist JO - New Phytol VL - 175 IS - 1 N2 - * In this study we address the impact of changes in plant heavy metal, (i.e. zinc (Zn) and cadmium (Cd)) status on metal accumulation in the Zn/Cd hyperaccumulator, Thlaspi caerulescens. * Thlaspi caerulescens plants were grown hydroponically on both high and low Zn and Cd regimes and whole-shoot and -root metal accumulation, and root (109)Cd(2+) influx were determined. * High-Zn-grown (500 microm Zn) plants were found to be more Cd-tolerant than plants grown in standard Zn conditions (1 microm Zn). Furthermore, shoot Cd accumulation was significantly greater in the high-Zn-grown plants. A positive correlation was also found between shoot Zn accumulation and increased plant Cd status. Radiotracer (109)Cd root flux experiments demonstrated that high-Zn-grown plants maintained significantly higher root Cd(2+) influx than plants grown on 1 microm Zn. It was also found that both nickel (Ni) and copper (Cu) shoot accumulation were stimulated by high plant Zn status, while manganese (Mn) accumulation was not affected. * A speculative model is presented to explain these findings, suggesting that xylem loading may be one of the key sites responsible for the hyperaccumulation of Zn and Cd accumulation in Thlaspi caerulescens. SN - 0028-646X UR - https://www.unboundmedicine.com/medline/citation/17547666/Plant_Cd2+_and_Zn2+_status_effects_on_root_and_shoot_heavy_metal_accumulation_in_Thlaspi_caerulescens_ L2 - https://doi.org/10.1111/j.1469-8137.2007.02073.x DB - PRIME DP - Unbound Medicine ER -