Phytoremediation of metal contaminated soil using willow. exploiting plant-associated bacteria to improve biomass production and metal uptake.

Bibtex

@misc{917b7f87-8360-471a-960c-dfcb78b05f3a,
title = "Phytoremediation of metal contaminated soil using willow",
abstract = "Short rotation coppice (SRC) of willow and poplar is proposed for economic valorization and concurrently as remediation strategy for metal contaminated land in northeast-Belgium. However, metal phytoextraction appears insufficient to effectuate rapid reduction of soil metal contents. To increase both biomass production and metal accumulation of SRC, two strategies are proposed: (i) in situ selection of the best performing clones and (ii) bioaugmentation of these
clones with beneficial plant-associated bacteria. Based on field data, two experimental willow clones, a Salix viminalis and a Salix alba x alba clone, were selected. Compared to the best performing commercial clones, considerable increases in stem metal extraction were achieved (up to 74% for Cd and 91% for Zn). From the selected clones, plant-associated bacteria were isolated and identified. All strains were subsequently screened for their plant growth-promoting and metal uptake enhancing traits. Five strains were selected for a greenhouse inoculation experiment with the selected clones planted in Cd-Zn-Pb contaminated soil. Extraction potential tended to increase after inoculation of S. viminalis plants with a Rahnella sp. strain due to a significantly increased twig biomass. However, although bacterial strains showing beneficial traits in vitro were used for inoculation, increments in extraction potential were not always
observed.
",
author = "Jolien Janssen and Nele Weyens and Sarah Croes and Bram Beckers and Linda Meiresonne and Pierre Van Peteghem and Robert Carleer and Jaco Vangronsveld",
year = "2015",
month = mei,
day = "01",
doi = "",
language = "Nederlands",
publisher = "Taylor and Francis Ltd.",
address = "België,
type = "Other"
}

Auteurs