Record ID No. |
1692 |
Author(s) |
Wu, N Y., Zhang, S Z., Huang, H L., Christie, P , 2008 |
Affiliation |
Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Ennvironm Chem & Ecotoxicol, POB 2871, Beijing 100085, PEOPLES R CHINA |
Title |
Enhanced dissipation of phenanthrene in spiked soil by arbuscular mycorrhizal alfalfa combined with a non-ionic surfactant amendment |
Source. Vol.(no):Page |
Science of the Total Environment.394(2-3):230-236p |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Organism |
n.a. |
Country |
PEOPLES R CHINA, Asia |
Abstracts |
Experiments were conducted to assess the role of colonization of alfalfa roots by
an arbuscular mycorrhizal (AM) fungus (Glomus etunicatum) in conjunction with a non-ionic
surfactant (Triton X-100) in dissipation of phenanthrene in a soil spiked with phenanthrene at 0,
2.5, 5.0 and 10.0 mg kg(-1). After plant harvest the residual phenanthrene concentration in the
soil decreased markedly. Mycorrhizal treatment enhanced phenanthrene dissipation in the
rhizosphere and bulk soils irrespective of phenanthrene application rate. Addition of Triton
X-100 resulted in the highest phenanthrene concentration in the rhizosphere soil among the
treatments, while the lowest phenanthrene concentration in the bulk soil was obtained by AM
inoculation and amendment with Triton X-100. AM inoculation and addition of the surfactant
consistently promoted phenanthrene dissipation in the soil and decreased the microbial biomass
based on phospholipid fatty acid (PLFA) analysis. PLFA profiles demonstrated that AM inoculation
together with addition of Triton X-100 altered the microbial community structure in the
rhizosphere soil. The results of this study provide a reference value for phytoremediation of
soil contaminated by organic pollutants. (c) 2008 Elsevier B.V. All rights reserved. |