Dissipation gradients of phenanthrene and pyrene in the Rice rhizosphere

Y. GAO, S.C. WU, X.Z. YU, Ming Hung WONG

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22 Citations (Scopus)

Abstract

An experiment was conducted to reveal the effects of rice cultivation as well as polycyclic aromatic carbohydrates (PAHs) degrading bacterium (Acinetobacter sp.) on the dissipation gradients of two PAHs (PHE and PYR) in the rhizosphere. The results showed that the presence of rice root and bacteria significantly accelerated the dissipation rate of PHE and PYR. The root exudates contributed to the formation of dissipation gradients of PHE and PYR along the vertical direction of roots, with a higher dissipation rate in the rhizosphere and near rhizosphere zone than the soil far away the rhizosphere. Copyright © 2010 Published by Elsevier Ltd.
Original languageEnglish
Pages (from-to)2596-2603
JournalEnvironmental Pollution
Volume158
Issue number8
DOIs
Publication statusPublished - Aug 2010

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Rhizosphere
Pyrene
Carbohydrates
Bacteria
Soils
Acinetobacter
Exudates and Transudates
Soil
Experiments
phenanthrene
pyrene
Oryza
Direction compound

Citation

Gao, Y., Wu, S. C., Yu, X. Z., & Wong, M. H. (2010). Dissipation gradients of phenanthrene and pyrene in the Rice rhizosphere. Environmental Pollution, 158(8), 2596-2603. doi: 10.1016/j.envpol.2010.05.012

Keywords

  • Rice
  • Bacteria
  • PAHs dissipation gradients
  • Rhizosphere