Bacteria associated with oak and ash on a TCE-contaminated site: characterization of isolates with potential to avoid evapotranspiration of TCE |
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Authors: | Nele Weyens Safiyh Taghavi Tanja Barac Daniel van der Lelie Jana Boulet Tom Artois Robert Carleer Jaco Vangronsveld |
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Institution: | (1) Environmental Biology, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium;(2) Biodiversity, Phylogeny and Population Studies, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium;(3) Applied Chemistry, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium;(4) Biology Department, Brookhaven National Laboratory (BNL), Building 463, Upton, NY 11973, USA; |
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Abstract: | Background, aim, and scope Along transects under a mixed woodland of English Oak (Quercus robur) and Common Ash (Fraxinus excelsior) growing on a trichloroethylene (TCE)-contaminated groundwater plume, sharp decreases in TCE concentrations were observed,
while transects outside the planted area did not show this remarkable decrease. This suggested a possibly active role of the
trees and their associated bacteria in the remediation process. Therefore, the cultivable bacterial communities associated
with both tree species growing on this TCE-contaminated groundwater plume were investigated in order to assess the possibilities
and practical aspects of using these common native tree species and their associated bacteria for phytoremediation. In this
study, only the cultivable bacteria were characterized because the final aim was to isolate TCE-degrading, heavy metal resistant
bacteria that might be used as traceable inocula to enhance bioremediation. |
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