Endophyte-enhanced phytoremediation of DDE-contaminated using Cucurbita pepo: A field trial
| Autor: | Nele Eevers, Jaco Vangronsveld, Jason C. White, Nele Weyens, Joseph Hawthorne |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Field experiment Dichlorodiphenyl Dichloroethylene Plant Science DDE DDT endophytes field experiment pesticides 010501 environmental sciences 01 natural sciences Endophyte Plant Roots 03 medical and health sciences Cucurbita pepo Cucurbita Endophytes Environmental Chemistry Soil Pollutants Ecosystem 0105 earth and related environmental sciences biology organic chemicals fungi food and beverages Pesticide Contamination biology.organism_classification Pollution Phytoremediation Horticulture 030104 developmental biology Biodegradation Environmental Field trial |
| Zdroj: | International journal of phytoremediation. 20(4) |
| ISSN: | 1549-7879 |
| Popis: | 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-dichloro-ethylene (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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |