Phytoextraction potential of four poplar hybrids under greenhouse conditions

Abstract

The present work aimed to determine the phytoextraction potential of four poplar hybrids when treated with mixed heavy metals, cadmium (Cd), chromium, (Cr), copper (Cu), and zinc (Zn) under greenhouse conditions. Poplar hybrids were treated once with six different concentrations (0, 5, 50, 100, 200, and 500 mg L ¡1) of mixed heavy metals over a period of 3 months, after which the plants were harvested, dried, digested using the aqua regia method and the heavy metal concentrations in the roots, stem, and leaves were determined. Individual heavy metal analysis using ICP-AES of separate heavy metals in plant parts demonstrated higher Zn accumulation in leaves, compared to all other heavy metals. As for Cd, Cr, and Cu the concentration accumulation in the leaves, stem, and roots varied across hybrids. Based on the phytoextraction potential of the four hybrids, hybrid 1 (Eco 28) was determined as a suitable candidate for phytoextraction of multi-contaminated sites, with DN 034 also showing selective phytoextraction potential in the early stages of growth.

Phytoremediation of soils polluted with heavy metals in the vicinity of the Zenica steel mill in Bosnia and Herzegovina: potential for using native flora

“…In order to achieve this goal, the present study evaluated the phytoaccumulation potential of five native herbaceous plants: Verbascum pulverulentum Vill, Melilotus officinalis (L.) Lam., Echium vulgare L., Stellaria media L., Artemisia vulgaris L. and the phytostabilization potential of two native woody plants: Rhus typhina L. and Populus nigra L. These plants grow in soils polluted with heavy metals without suffering any toxic effects, which is why they were included in this study. Several studies report that some of the above-mentioned plants can accumulate large amounts of heavy metals (Chandra et al 2016;Gajić et al 2018;Jakovljević et al 2019), however, little is known about their ability to accumulate heavy metals when growing around the Zenica steel mill.…”

Mycorrhizal inoculation effects on growth and the mycobiome of poplar on two phytomanaged sites after 7-year-short rotation coppicing

“…Populus species have been successfully used for the revegetation of lands heavily contaminated with TE due to their high tolerance to excessive TE concentrations ( Hur et al., 2011 ; Guerra et al., 2011 ; Castro-Rodríguez et al., 2016 ; Chandra et al., 2016 ; Barra Caracciolo et al., 2020 ). These species are also characterized by fast growth rates and their ability to stabilize the soil surface, reduce wind and water erosion of the soil, and decrease the risk of contaminant leaching ( Domiínguez et al., 2009 ; Ciadamidaro et al., 2014 ).…”