Phytoextraction and Assisted Phytoextraction of Metals from Agriculture Used Soil

• Published in: Communications in Soil Science and Plant Analysis 2013-07, Vol.44 (12), p.1862-1872
• Main Authors: Trakal, L, Neuberg, M, Száková, J, Vohník, M, Tejnecký, V, Drábek, O, Tlustoš, P
• Format: Article
• Language: English
• Subjects: Agriculture; Agronomy. Soil science and plant productions; Biological and medical sciences; cadmium; Economic plant physiology; Ectomycorrhizal inoculum (ECMI); free amino acids; Fundamental and applied biological sciences. Psychology; inoculum; leaching; lead; lysimeter pot; Metals; Paxillus involutus; phytoremediation; Plant growth; plant stress; Salix; Salix smithiana; soil; Soil science; Soil sciences; Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...); toxic metals; vegetation; water content; willow; zinc
• ISSN: 1532-2416; 0010-3624; 1532-2416; 1532-4133
• DOI: 10.1080/00103624.2013.790403

The clone (Salix × smithiana, Willd.) was cultivated in lysimeter pots to monitor lead (Pb), cadmium (Cd), and zinc (Zn) leachate and to compare the effect of ectomycorrhizal inoculum (ECMI; Paxillus involutus, Bartsch. ex Fr.) on plant growth and metal uptake by willows during two consecutive vegetation periods. The willow clone was able to reduce metal leaching significantly because of its high phytoextraction potential. In addition, ECMI (i) significantly enhanced plant growth; (ii) decreased metal-induced plant stress, which was represented by greater Nₜₒₜₐₗ in biomass and by greater productions of free amino acids AAfᵣₑₑ (from 128 ± 10 to 204 ± 16 μmol kg⁻¹ fresh weight); and (iii) showed no additional effect of metal uptake. Furthermore, treated willows were affected indirectly, probably because of unsuccessful inoculation by Paxillus involutus, Bartsch. ex Fr., caused by high level of volumetric water content (θᵥ) during both vegetation periods (θᵥ = 25%).