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Reduced metabolites of nitroaromatics are distributed in the environment via the food chain

文献类型： 外文期刊

作者： Nisar, Numrah 1 ; Cheema, Kausar J. 2 ; Powell, Glen 1 ; Bennett, Mark 1 ; Chaudhary, Safee Ullah 4 ; Qadri, Rashad 5 ;

作者机构： 1.Imperial Coll London, London, England

2.Lahore Coll Women Univ, Lahore, Pakistan

3.NIAB EMR, East Malling, England

4.Lahore Univ Management Sci, Lahore, Pakistan

5.Univ Agr Faisalabad, Inst Hort Sci, Faisalabad, Pakistan

6.Chinese Acad Trop Agr Sci, Hainan Key Lab Trop Oil Crops Biol, Coconut Res Inst, Wenchang, Hainan, Peoples R China

关键词： Arabidopsis thaliana; Brevicoryne brassicae; Dinitrotoluene; Myzus persicae; Toxicity

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）

ISSN： 0304-3894

年卷期： 2018 年 355 卷

页码：

收录情况： SCI

摘要： Increased industrial processes have introduced emerging toxic pollutants into the environment. Phytoremediation is considered to be a very useful, economical and ecofriendly way of controlling these pollutants, however, certain pollutants can potentially travel through the food chain and accumulate at hazardous levels. Four isomers of dinitrotoluenes (DNT) were investigated and observed their potential toxicity towards A. thaliana. Two different aphid species (generalist and specialist) were allowed to feed on plants treated with DNTs and toxicity to aphids determined. Reduced metabolites of DNT (in both plant and aphids) were recovered and quantified through GC MS analyses. 2,6-DNT was observed to be the toxic of the DNTs tested. Complete metabolism of DNTs to their reduced products was never achieved for higher concentrations. Regioselectivity was observed in the case of 2,4-DNT, with 4A2NT as the dominant isomer. Feeding aphids showed a similar toxicity pattern for DNT isomers as host plants. Metabolites were recovered from the body of aphids, demonstrating the potential transport of metabolites through the food chain. Plants show varied toxicity responses towards the DNT isomers. Aphids fed on A. thaliana plants treated with DNTs were shown to have ANTs present, which reflects the propagation of DNT metabolites through the food chain.

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