Uptake, accumulation and toxicity of short chain chlorinated paraffins to wheat (Triticum aestivum L.)
文献类型： 外文期刊
作者： Yu, Jianzhong 1 ; Tang, Qing 2 ; Yin, Ge 3 ; Chen, Weifang 4 ; Lv, Jitao 5 ; Li, Lingxiangyu 4 ; Zhang, Chenghao 6 ; Ye, Yunxiang 6 ; Song, Xijiao 7 ; Zhao, Xueping 1 ; Tang, Tao 1 ; Zhang, Changpeng 1 ; Zeng, Lixi 8 ; Xu, Zhenlan 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
2.Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Peoples R China
3.Shimadzu China Co LTD, Shanghai 200233, Peoples R China
4.UCAS, Hangzhou Inst Adv Study, Sch Environm, Hangzhou 310000, Peoples R China
5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
6.Zhejiang Acad Agr Sci, Inst Agr Equipment, Hangzhou 310021, Peoples R China
7.Zhejiang Acad Agr Sci, Cent Lab, Hangzhou 310021, Peoples R China
8.Jinan Univ, Sch Environm, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 511443, Peoples R China
关键词： Short chain chlorinated paraffins; Root concentration factor; Translocation factor; Cellular ultrastructure; Hydrophobicity
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：13.6； 五年影响因子：12.7 ）
ISSN： 0304-3894
年卷期： 2024 年 464 卷
页码：
收录情况： SCI
摘要： Short chain chlorinated paraffins (SCCPs) are ubiquitous persistent organic pollutants. They have been widely detected in plant-based foods and might cause adverse impacts on humans. Nevertheless, uptake and accumu-lation mechanisms of SCCPs in plants remain unclear. In this study, the soil culture data indicated that SCCPs were strongly absorbed by roots (root concentration factor, RCF>1) yet limited translocated to shoots (trans-location factor<1). The uptake mechanism was explored by hydroponic exposure, showing that hydrophobicity and molecular size influenced the root uptake and translocation of SCCPs. RCFs were significantly correlated with logKow values and molecular weights in a parabolic curve relationship. Besides, it was extremely difficult for SCCPs to translocate from shoots back to roots via phloem. An active energy-dependent process was proposed to be involved in the root uptake of SCCPs, which was supported by the uptake inhibition by the low temperature and metabolic inhibitor. Though SCCPs at environmentally relevant concentrations had no negative impacts on root morphology and chlorophyll contents, it caused obvious changes in cellular ultrastructure of root tip cells and induced a significant increase in superoxide dismutase activity. This information may be beneficial to moderate crop contamination by SCCPs, and to remedy soils polluted by SCCPs with plants.
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