1. Remediation of polychlorinated biphenyl-contaminated soil by using a combination of ryegrass, arbuscular mycorrhizal fungi and earthworms.
- Author
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Lu YF, Lu M, Peng F, Wan Y, and Liao MH
- Subjects
- Animals, Biodegradation, Environmental, Plant Roots metabolism, Plant Roots microbiology, Polychlorinated Biphenyls analysis, Soil chemistry, Soil Microbiology, Soil Pollutants analysis, Glomeromycota metabolism, Lolium metabolism, Lolium microbiology, Mycorrhizae metabolism, Oligochaeta metabolism, Polychlorinated Biphenyls metabolism, Soil Pollutants metabolism
- Abstract
In this work, a laboratory experiment was performed to investigate the influences of inoculation with the arbuscular mycorrhizal fungus (AMF) Glomus caledoniun L. and/or epigeic earthworms (Eisenia foetida) on phytoremediation of a PCB-contaminated soil by ryegrass grown for 180d. Planting ryegrass, ryegrass inoculated with earthworms, ryegrass inoculated with AMF, and ryegrass co-inoculated with AMF and earthworms decreased significantly initial soil PCB contents by 58.4%, 62.6%, 74.3%, and 79.5%, respectively. Inoculation with AMF and/or earthworms increased the yield of plants, and the accumulation of PCBs in ryegrass. However, PCB uptake by ryegrass accounted for a negligible portion of soil PCB removal. The number of soil PCB-degrading populations increased when ryegrass was inoculated with AMF and/or earthworms. The data show that fungal inoculation may significantly increase the remedial potential of ryegrass for soil contaminated with PCBs., (Copyright © 2014 Elsevier Ltd. All rights reserved.)
- Published
- 2014
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