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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/26258

Title: Endophyte-enhanced phytoremediation of DDE-contaminated using Cucurbita pepo: A field trial
Authors: Eevers, Nele
Hawthorne, J. R.
White, J. C.
Vangronsveld, Jaco
Weyens, Nele
Issue Date: 2018
Abstract: Although the use of the pesticide 2,2-bis(p-chlorophenyl)-1,1,1-trichloroethane (DDT) was banned from the mid-1970s, its most abundant and recalcitrant degradation product, 2,2-bis(p-chlorophenyl)-1,1-dichloroethylene (DDE), is still present in terrestrial and aquatic ecosystems worldwide. Zucchini (Cucurbita pepo ssp. pepo) has been shown to accumulate high concentrations of DDE and was proposed for phytoremediation of contaminated soils. We performed a field trial covering a full plant life cycle. C. pepo plants inoculated with the plant growth-promoting endophytic strains Sphingomonas taxi UH1, Methylobacterium radiotolerans UH1, Enterobacter aerogenes UH1, or a consortium combining these 3 strains were grown on a DDE-contaminated field for 100 days. The effects of these inoculations were examined at both the plant level, by evaluating plant weight and plant DDE-content, and at the level of the cultivable and total endophytic communities. Inoculating plants with S. taxi UH1, M. radiotolerans UH1, and the consortium increased plant weight. No significant effects of the inoculations were observed on DDE-concentrations in plant tissues. However, the amount of DDE accumulated by C. pepo plants per growing season was significantly higher for plants that were inoculated with the consortium of the 3 strains. Therefore, inoculation of C. pepo with DDE-degrading endophytes might be promising for phytoremediation applications.
Notes: Vangronsveld, J (reprint author), Hasselt Univ, Ctr Environm Sci, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium, jaco.vangronsveld@uhasselt.be
URI: http://hdl.handle.net/1942/26258
DOI: 10.1080/15226514.2017.1377150
ISI #: 000428677600002
ISSN: 1522-6514
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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