Accumulation of cadmium, zinc, and copper by Helianthus annuus L.: impact on plant growth and uptake of nutritional elements

International Journal of Phytoremediation
Anna Rita RivelliPiergiorgio Gherbin

Abstract

We investigated the effects on physiological response, trace elements and nutrients accumulation of sunflower plants grown in soil contaminated with: 5 mg kg(-1) of Cd; 5 and 300 mg kg(-1) of Cd and Zn, respectively; 5, 300, and 400 mg kg(-1) of Cd, Zn, and Cu, respectively. Contaminants applied did not produce large effects on growth, except in Cd-Zn-Cu treatment in which leaf area and total dry matter were reduced, by 15%. The contamination with Cd alone did not affect neither growth nor physiological parameters, despite considerable amounts of Cd accumulated in roots and older leaves, with a high bioconcentration factor from soil to plant. By adding Zn and then Cu to Cd in soil, significant were the toxic effects on chlorophyll content and water relations due to greater accumulation of trace elements in tissues, with imbalances in nutrients uptake. Highly significant was the interaction between shoot elements concentration (Cd, Zn, Cu, Fe, Mg, K, Ca) and treatments. Heavy metals concentrations in roots always exceeded those in stem and leaves, with a lower translocation from roots to shoots, suggesting a strategy of sunflower to compartmentalise the potentially toxic elements in physiologically less active parts in order to ...Continue Reading

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Citations

Jun 21, 2015·Chemosphere·Pier-Anne BélangerSébastien Roy
Jan 7, 2015·Environmental Science and Pollution Research International·Aliaksandr KolbasMichel Mench
Apr 4, 2018·Environmental Science and Pollution Research International·Aliaksandr KolbasMichel Mench
Mar 26, 2019·International Journal of Phytoremediation·Adalgisa ScottiAlicia Godeas
Oct 12, 2019·International Journal of Phytoremediation·A SaranL J Merini
Mar 14, 2020·Journal of the Science of Food and Agriculture·Yan ZhangYuncong Yao
May 24, 2020·Environmental Science and Pollution Research International·Priti Chauhan, Jyoti Mathur
Apr 25, 2018·International Journal of Phytoremediation·Somayeh NaderiMajid Afyuni

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