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Degradation of trinitrotoluene by transgenic nitroreductase in Arabidopsis plants

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  • Bo ZHU

    (Key Laboratory for the Conservation and Utilization of Important Biological Resources, Anhui Province, College of Life Sciences, Anhui Normal University, Wuhu, P.R. China)

  • Hongjuan HAN

    (Agro-Biotechnology Research Center, Shanghai Academy of Agricultural Sciences, P.R. China)

  • FU Xiaoyan

    (Agro-Biotechnology Research Center, Shanghai Academy of Agricultural Sciences, P.R. China)

  • LI Zhenjun

    (Agro-Biotechnology Research Center, Shanghai Academy of Agricultural Sciences, P.R. China)

  • Jianjie GAO

    (Agro-Biotechnology Research Center, Shanghai Academy of Agricultural Sciences, P.R. China)

  • Quanhong YAO

    (Agro-Biotechnology Research Center, Shanghai Academy of Agricultural Sciences, P.R. China)

Abstract

The explosive 2,4,6-trinitrotoluene (TNT) is a highly toxic and persistent environmental pollutant. TNT is toxic to many organisms, it is known to be a potential human carcinogen, and is persistent in the environment. This study presents a system of phytoremediation by Arabidopsis plants developed on the basis of overexpression of NAD(P)H-flavin nitroreductase (NFSB) from the Sulfurimonas denitrificans DSM1251. The resulting transgenic Arabidopsis plants demonstrated significantly enhanced TNT tolerance and a strikingly higher capacity to remove TNT from their media. The highest specific rate constant of TNT disappearance rate was 1.219 and 2.297 mL/g fresh weight/h for wild type and transgenic plants, respectively. Meanwhile, the nitroreductase activity in transgenic plant was higher than wild type plant. All this indicates that transgenic plants show significantly enhanced tolerances to TNT; transgenic plants also exhibit strikingly higher capabilities of removing TNT from their media and high efficiencies of transformation.

Suggested Citation

  • Bo ZHU & Hongjuan HAN & FU Xiaoyan & LI Zhenjun & Jianjie GAO & Quanhong YAO, 2018. "Degradation of trinitrotoluene by transgenic nitroreductase in Arabidopsis plants," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 64(8), pages 379-385.
    • Handle: RePEc:caa:jnlpse:v:64:y:2018:i:8:id:655-2017-pse
    DOI: 10.17221/655/2017-PSE
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