Variation in Copper Accumulation at the Tissue Level of Five Hybrid Poplars Subjected to Copper Stress |
| |
Authors: | Jorge Cornejo Jaime Tapia Fernando Guerra Marco Yáñez Ricardo Baettig Jorge Guajardo Eduardo Alarcón Gladys Vidal |
| |
Institution: | 1.Institute of Natural Resources Chemistry,Universidad de Talca,Talca,Chile;2.Institute of Biological Sciences,Universidad de Talca,Talca,Chile;3.Faculty of Forestry Sciences, Poplar Technology Center,Universidad de Talca,Talca,Chile;4.Institute of Mathematics and Physics,Universidad de Talca,Talca,Chile;5.Environmental Biotechnology and Engineering Group (GIBA-UDEC), Faculty of Environmental Sciences and EULA-Chile Center,Universidad de Concepción,Concepcion,Chile |
| |
Abstract: | Heavy metal contamination causes significant environmental problems around the world and poses a threat to human health. Poplar hybrids present features for potential uses in phytoremediation systems in areas with heavy metal contamination. The purpose of this study was to assess the copper (Cu) accumulation level in five poplar inter-species hybrids (Populus trichocarpa × Populus deltoides) × P. deltoides; P. deltoides × Populus nigra; P. trichocarpa × Populus maximowiczii; P. trichocarpa × P. nigra; and (P. trichocarpa × P. deltoides) × (P. trichocarpa × P. deltoides)] grown in a hydroponic system. The treatments entailed the application of low and high doses of Cu of 8.0 and 16.0 μM, respectively. Cu accumulation was observed in roots, stems, and leaves, which was determined using flame atomic absorption spectroscopy, prior acid digestion of each sample. The methodology was validated according to certified reference material (Cypress BIMEP 432). Significant differences in Cu accumulation were found among genotypes for both roots and leaves, but not for stems. In roots, the genotype P. deltoides × P. nigra had a Cu accumulation level of 169.8% higher than the average accumulation found in the other genotypes. The (P. trichocarpa × P. deltoides) × P. deltoides hybrid showed the least Cu accumulation in leaves. The results of this study can potentially be used for proper crossovers and hybrids selection within the genus Populus for phytoremediation of Cu contaminated land. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|