Impact of two iron(III) chelators on the iron, cadmium, lead and nickel accumulation in poplar grown under heavy metal stress in hydroponics
| Autor: | Árpád Csog, Enikő Tatár, Gyula Záray, Luminiţa Silaghi-Dumitrescu, Norbert Szoboszlai, Ferenc Fodor, Victor G. Mihucz |
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| Rok vydání: | 2012 |
| Předmět: |
Physiology
Iron chemistry.chemical_element Biomass Plant Science Iron Chelating Agents Metal Hydroponics Nickel Stress Physiological Metals Heavy Botany Chelation Cadmium fungi food and beverages Phytoremediation Populus Lead chemistry visual_art Shoot visual_art.visual_art_medium Agronomy and Crop Science Plant Shoots Nuclear chemistry |
| Zdroj: | Journal of Plant Physiology. 169:561-566 |
| ISSN: | 0176-1617 |
| DOI: | 10.1016/j.jplph.2011.12.012 |
| Popis: | Poplar (Populus jacquemontiana var. glauca cv. Kopeczkii) was grown in hydroponics containing 10 μM Cd(II), Ni(II) or Pb(II), and Fe as Fe(III) EDTA or Fe(III) citrate in identical concentrations. The present study was designed to compare the accumulation and distribution of Fe, Cd, Ni and Pb within the different plant compartments. Generally, Fe and heavy-metal accumulation were higher by factor 2-7 and 1.6-3.3, respectively, when Fe(III) citrate was used. Iron transport towards the shoot depended on the Fe(III) chelate and, generally, on the heavy metal used. Lead was accumulated only in the root. The amounts of Fe and heavy metals accumulated by poplar were very similar to those of cucumber grown in an identical way, indicating strong Fe uptake regulation of these two Strategy I plants: a cultivar and a woody plant. The Strategy I Fe uptake mechanism (i.e. reducing Fe(III) followed by Fe(II) uptake), together with the Fe(III) chelate form in the nutrient solution had significant effects on Fe and heavy metal uptake. Poplar appears to show phytoremediation potential for Cd and Ni, as their transport towards the shoot was characterized by 51-54% and 26-48% depending on the Fe(III) supply in the nutrient solution. |
| Databáze: | OpenAIRE |
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