Dissipation gradients of phenanthrene and pyrene in the Rice rhizosphere

Y. Gao; S. C. Wu; X. Z. Yu; Ming Hung WONG

doi:10.1016/j.envpol.2010.05.012

Dissipation gradients of phenanthrene and pyrene in the Rice rhizosphere

Y. Gao, S. C. Wu, X. Z. Yu, Ming Hung WONG

Department of Biology

Research output: Contribution to journal › Journal article › peer-review

28 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.

Original language	English
Pages (from-to)	2596-2603
Number of pages	8
Journal	Environmental Pollution
Volume	158
Issue number	8
DOIs	https://doi.org/10.1016/j.envpol.2010.05.012
Publication status	Published - Aug 2010

Scopus Subject Areas

Toxicology
Pollution
Health, Toxicology and Mutagenesis

User-Defined Keywords

Bacteria
PAHs dissipation gradients
Rhizosphere
Rice

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10.1016/j.envpol.2010.05.012

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title = "Dissipation gradients of phenanthrene and pyrene in the Rice rhizosphere",

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.",

keywords = "Bacteria, PAHs dissipation gradients, Rhizosphere, Rice",

author = "Y. Gao and Wu, {S. C.} and Yu, {X. Z.} and WONG, {Ming Hung}",

note = "Funding Information: Financial support from the Mini-AoE (Areas of Excellence) fund of HKBU (RC/AoE/08-09/01) is gratefully acknowledged.",

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doi = "10.1016/j.envpol.2010.05.012",

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T1 - Dissipation gradients of phenanthrene and pyrene in the Rice rhizosphere

AU - Gao, Y.

AU - Wu, S. C.

AU - Yu, X. Z.

AU - WONG, Ming Hung

N1 - Funding Information: Financial support from the Mini-AoE (Areas of Excellence) fund of HKBU (RC/AoE/08-09/01) is gratefully acknowledged.

PY - 2010/8

Y1 - 2010/8

N2 - 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.

AB - 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.

KW - Bacteria

KW - PAHs dissipation gradients

KW - Rhizosphere

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DO - 10.1016/j.envpol.2010.05.012

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SN - 0269-7491

VL - 158

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JO - Environmental Pollution

JF - Environmental Pollution

IS - 8

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Dissipation gradients of phenanthrene and pyrene in the Rice rhizosphere

Abstract

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