Uptake and transport mechanisms of decabromodiphenyl ether (BDE-209) by rice (Oryza sativa)

Ka Lai CHOW; Yu Bon Man; Nora Fung Yee Tam; Yan Liang; Ming Hung WONG

doi:10.1016/j.chemosphere.2014.10.016

Uptake and transport mechanisms of decabromodiphenyl ether (BDE-209) by rice (Oryza sativa)

Ka Lai CHOW, Yu Bon Man, Nora Fung Yee Tam, Yan Liang, Ming Hung WONG^*

^*Corresponding author for this work

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

49 Citations (Scopus)

Abstract

The extensive industrial use of brominated flame retardants has aroused rapidly growing public concerns about their ubiquity in the environment. The feasibility of uptake and translocation of decabromodiphenyl ether (BDE-209) by three rice cultivars, namely Fengmeizhan, Hefengzhan and Guangyinzhan, and the uptake mechanisms of BDE-209 into rice roots, were investigated by employing a partition-limited model. Uptake of BDE-209 by the rice cultivars (Fengmeizhan, Hefengzhan and Guangyinzhan) was examined by a 60-day cultivation in sterilized BDE-209 spiked sand, followed by Soxhlet extraction and gas chromatography-mass spectrometry (GC-MS) analysis. A partition-limited model was applied for estimating and describing the approach of the uptake of BDE-209 by rice in sand. The average quasi-equilibrium factor (α_pt) of BDE-209 in root uptake in sand was 0.112×10^-3 for three rice cultivars in the present study (<1), implying a non-equilibrium movement of molecules and a dominated passive transport uptake. According to the results of sorption analysis of dead and fresh roots, apoplastic pathway likely dominated the transport of BDE-209 into roots cells.

Original language	English
Pages (from-to)	1262-1267
Number of pages	6
Journal	Chemosphere
Volume	119
DOIs	https://doi.org/10.1016/j.chemosphere.2014.10.016
Publication status	Published - 1 Jan 2015

Scopus Subject Areas

Environmental Engineering
Environmental Chemistry
General Chemistry
Pollution
Health, Toxicology and Mutagenesis

User-Defined Keywords

Apoplastic path
Brominated flame retardants
Partition-limited model
Quasi-equilibrium factor

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10.1016/j.chemosphere.2014.10.016

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title = "Uptake and transport mechanisms of decabromodiphenyl ether (BDE-209) by rice (Oryza sativa)",

abstract = "The extensive industrial use of brominated flame retardants has aroused rapidly growing public concerns about their ubiquity in the environment. The feasibility of uptake and translocation of decabromodiphenyl ether (BDE-209) by three rice cultivars, namely Fengmeizhan, Hefengzhan and Guangyinzhan, and the uptake mechanisms of BDE-209 into rice roots, were investigated by employing a partition-limited model. Uptake of BDE-209 by the rice cultivars (Fengmeizhan, Hefengzhan and Guangyinzhan) was examined by a 60-day cultivation in sterilized BDE-209 spiked sand, followed by Soxhlet extraction and gas chromatography-mass spectrometry (GC-MS) analysis. A partition-limited model was applied for estimating and describing the approach of the uptake of BDE-209 by rice in sand. The average quasi-equilibrium factor (αpt) of BDE-209 in root uptake in sand was 0.112×10-3 for three rice cultivars in the present study (<1), implying a non-equilibrium movement of molecules and a dominated passive transport uptake. According to the results of sorption analysis of dead and fresh roots, apoplastic pathway likely dominated the transport of BDE-209 into roots cells.",

keywords = "Apoplastic path, Brominated flame retardants, Partition-limited model, Quasi-equilibrium factor",

author = "CHOW, {Ka Lai} and Man, {Yu Bon} and Tam, {Nora Fung Yee} and Yan Liang and WONG, {Ming Hung}",

note = "Funding Information: The authors would like to thank the financial support from the Area of Excellence (AoE) Scheme (CityU MERIT) (AoE/P-04/04) of the Research Grants Council of Hong Kong and the Start-up Research Grant for Newly Recruited Professors/(Research) Chair Professors, The Hong Kong Institute of Education (RG24/13-14R). ",

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AU - CHOW, Ka Lai

AU - Man, Yu Bon

AU - Tam, Nora Fung Yee

AU - Liang, Yan

AU - WONG, Ming Hung

N1 - Funding Information: The authors would like to thank the financial support from the Area of Excellence (AoE) Scheme (CityU MERIT) (AoE/P-04/04) of the Research Grants Council of Hong Kong and the Start-up Research Grant for Newly Recruited Professors/(Research) Chair Professors, The Hong Kong Institute of Education (RG24/13-14R).

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N2 - The extensive industrial use of brominated flame retardants has aroused rapidly growing public concerns about their ubiquity in the environment. The feasibility of uptake and translocation of decabromodiphenyl ether (BDE-209) by three rice cultivars, namely Fengmeizhan, Hefengzhan and Guangyinzhan, and the uptake mechanisms of BDE-209 into rice roots, were investigated by employing a partition-limited model. Uptake of BDE-209 by the rice cultivars (Fengmeizhan, Hefengzhan and Guangyinzhan) was examined by a 60-day cultivation in sterilized BDE-209 spiked sand, followed by Soxhlet extraction and gas chromatography-mass spectrometry (GC-MS) analysis. A partition-limited model was applied for estimating and describing the approach of the uptake of BDE-209 by rice in sand. The average quasi-equilibrium factor (αpt) of BDE-209 in root uptake in sand was 0.112×10-3 for three rice cultivars in the present study (<1), implying a non-equilibrium movement of molecules and a dominated passive transport uptake. According to the results of sorption analysis of dead and fresh roots, apoplastic pathway likely dominated the transport of BDE-209 into roots cells.

AB - The extensive industrial use of brominated flame retardants has aroused rapidly growing public concerns about their ubiquity in the environment. The feasibility of uptake and translocation of decabromodiphenyl ether (BDE-209) by three rice cultivars, namely Fengmeizhan, Hefengzhan and Guangyinzhan, and the uptake mechanisms of BDE-209 into rice roots, were investigated by employing a partition-limited model. Uptake of BDE-209 by the rice cultivars (Fengmeizhan, Hefengzhan and Guangyinzhan) was examined by a 60-day cultivation in sterilized BDE-209 spiked sand, followed by Soxhlet extraction and gas chromatography-mass spectrometry (GC-MS) analysis. A partition-limited model was applied for estimating and describing the approach of the uptake of BDE-209 by rice in sand. The average quasi-equilibrium factor (αpt) of BDE-209 in root uptake in sand was 0.112×10-3 for three rice cultivars in the present study (<1), implying a non-equilibrium movement of molecules and a dominated passive transport uptake. According to the results of sorption analysis of dead and fresh roots, apoplastic pathway likely dominated the transport of BDE-209 into roots cells.

KW - Apoplastic path

KW - Brominated flame retardants

KW - Partition-limited model

KW - Quasi-equilibrium factor

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Uptake and transport mechanisms of decabromodiphenyl ether (BDE-209) by rice (Oryza sativa)

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