大豆对6:2氟调聚醇的吸收、传输和代谢研究
详细信息 查看官网全文
- 英文论文题名：Uptake,Translocation and Metabolism of 6:2 Fluorotelomer Alcohol in Soybean(Glycine max L.Merrill)
- 论文作者：张宏娜 ; 温蓓 ; 张淑贞
- 英文论文作者：Hongna Zhang ; Bei Wen ; Shuzhen Zhang ; Research Center for Eco-Environmental Sciences ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院生态环境研究中心;
- 论文关键词：6 ; 2 FTOH ; 大豆 ; 吸收 ; 传输 ; 代谢
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十六分会：环境化学
- 语种：中文
- 分类号：X173;S565.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十六分会 ; 环境化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：189k
- 原文格式：D
- 会议级别：全国
摘要
氟调聚醇(FTOHs)是环境中全氟烷基羧酸(PFCAs)的一种前体化合物[1,2],有关FTOHs植物降解的研究至今鲜有报道。本实验利用温室水培法,研究了大豆(Glycine max L.Merrill)对6:2 FTOH的吸收、传输和代谢的动力学过程。研究表明,6:2 FTOH可以被大豆快速吸收、传输和降解,暴露144 h后,植物体内检测到的代谢产物为6:2 FTCA、6:2 FTUCA、5:3 FTCA和PFHx A;大豆根和茎中的代谢产物以5:3 FTCA为主,叶中以PFHx A为主。在此基础上,提出了6:2 FTOH在大豆中可能的代谢途径(Fig.1)。另外,暴露6:2 FTOH后,大豆根部的乙醇脱氢酶(ADH)、乙醛脱氢酶(ALDH)和谷胱甘肽硫转移酶(GST)的活性显著提高,表明这些酶参与到了大豆降解6:2 FTOH过程并起到重要作用。本研究为深入认识FTOHs及相关物质的植物吸收、传输和代谢过程提供了重要信息。
Fluorotelomer alcohols(FTOHs) are precursors of perfluorocarboxylic acids(PFCAs).However,limited information is available on the degradation of FTOHs by plants.In the present study,a hydroponic experiment was conducted to investigate the uptake,translocation and metabolism of 6:2 FTOH in soybean(Glycine max L.Merrill).Results showed that 6:2 FTOH could be fast taken up by soybean roots,translocated to soybean shoots and leaves,and metabolized into 6:2 FTCA,6:2 FTUCA,5:3 FTCA and PFOA.5:3 FTCA was the primary metabolite in soybean roots and stems,while PFHx A was predominant in soybean leaves.A possible metabolism pathway of 8:2 FTOH degradation in soybean was then proposed(Fig.1).Moreover,the activities of alcohol dehydrogenase(ADH),aldehyde dehydrogenase(ALDH),and glutathione S-transferase(GST) in soybean roots obviously increased,indicating the important role of these enzymes in 6:2 FTOH soybean degradation.
Fluorotelomer alcohols(FTOHs) are precursors of perfluorocarboxylic acids(PFCAs).However,limited information is available on the degradation of FTOHs by plants.In the present study,a hydroponic experiment was conducted to investigate the uptake,translocation and metabolism of 6:2 FTOH in soybean(Glycine max L.Merrill).Results showed that 6:2 FTOH could be fast taken up by soybean roots,translocated to soybean shoots and leaves,and metabolized into 6:2 FTCA,6:2 FTUCA,5:3 FTCA and PFOA.5:3 FTCA was the primary metabolite in soybean roots and stems,while PFHx A was predominant in soybean leaves.A possible metabolism pathway of 8:2 FTOH degradation in soybean was then proposed(Fig.1).Moreover,the activities of alcohol dehydrogenase(ADH),aldehyde dehydrogenase(ALDH),and glutathione S-transferase(GST) in soybean roots obviously increased,indicating the important role of these enzymes in 6:2 FTOH soybean degradation.
引文
[1]Liu,J.X.,Avenda?o,S.M.Environ.Int..2013,61:98.
[2]Fr?mel,T.,Knepper,T.P.Rev.Environ.Contam.Toxicol.2010,208:161.
[2]Fr?mel,T.,Knepper,T.P.Rev.Environ.Contam.Toxicol.2010,208:161.