Phenanthrene and pyrene uptake by arbuscular mycorrhizal maize and their dissipation in soil

F.Y. WU, X.Z. YU, S.C. WU, X.G. LIN, Ming Hung WONG

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Polycyclic aromatic hydrocarbons (PAHs) commonly found in soils can be degraded in rhizosphere, but may also be taken up by plants. The effects of arbuscular mycorrhizal (AM) fungi on uptake of phenanthrene (PHE) and pyrene (PYR) in maize and on their dissipation in soil were investigated using the three-compartmentalized rhizoboxes. Inoculation of Glomus mosseae significantly (p < 0.01) increased PHE and PYR concentrations in maize roots and significantly (p < 0.05) enhanced PYR translocation from roots to stems in the soil treatments of the PHE + PYR spiked-soils added into the central compartment of the rhizoboxes. There was a significant (p < 0.05) dissipation gradient of PHE and PYR observed away from the maize roots, with the highest dissipation rates recorded in rhizosphere zone in the central compartments of the rhizoboxes, followed by near rhizosphere zone and bulk soil zone in the outer compartments. However, G. mosseae only exerted minimal impacts on dissipation of PHE and PYR in the rhizosphere. The present study suggested that the hyphae and extraradical mycelium of AM fungi could play important roles in the uptake and translocation of PHE and PYR in plants. The present results indicated that there is a potential for the use of AM fungi and plant for remediating PAHs contaminated soils. Copyright © 2011 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)341-347
JournalJournal of Hazardous Materials
Volume187
Issue number1-3
DOIs
Publication statusPublished - Mar 2011

Citation

Wu, F. Y., Yu, X. Z., Wu, S. C., Lin, X. G., & Wong, M. H. (2011). Phenanthrene and pyrene uptake by arbuscular mycorrhizal maize and their dissipation in soil. Journal of Hazardous Materials, 187(1-3), 341-347. doi: 10.1016/j.jhazmat.2011.01.024

Keywords

  • Dissipation gradients
  • PAHs
  • Rhizobox
  • Phytoremediation

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