• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Are Accumulated Sulfide-Bound Metals Metabolically Available in the Benthic Oligochaete Tubifex tubifexl
【24h】

Are Accumulated Sulfide-Bound Metals Metabolically Available in the Benthic Oligochaete Tubifex tubifexl

机译：是在底栖动物Oligochaete Tubifex tubifexl中代谢积累的硫化物结合金属

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present study evaluates the relationship between metal-binding sediment characteristics like acid volatile sulfides (AVS), metal accumulation, and internal metal distribution in the benthic oligochaete Tubifex tubifex and relates this accumulation to the induction of metallothionein-like proteins (MTLPs). In total, 15 Flemish lowland rivers were sampled. Cd, Cu, Zn, Pb, Ni, As, Cr, Co, and Ag concentrations were measured in environmental fractions (water and sediment) and worm tissue (both total and subcellular fractions). Furthermore, total cytosolic MTLP concentrations were measured in the worm tissue. Our results showed that Cd, Pb, Ni, and Cr were mainly stored as biological detoxified metal (BDM) while Cu, Zn, As, and Ag were mostly available in the metal sensitive fraction (MSF). A remarkable difference in the subcellular distribution of accumulated Cd, Ni, and Co between anoxic (SEMMe - AVS < Oj mostly stored as BDM) and oxic (SEMMe - AVS > 0; mostly stored in the MSF) sediments was noticed. Moreover, a rapid increase in MTLP induction was found when SEMTot - AVS > 0. Our results indicate that the accumulated sulfide-bound metals were detoxified and little available to the metabolism of T. tubifex under anoxic conditions.
机译：本研究评估了底栖低聚鱼类Tubifextubifex中与金属结合的沉积物特征（如酸性挥发性硫化物（AVS），金属积累和内部金属分布）之间的关系，并将这种积累与金属硫蛋白样蛋白（MTLPs）的诱导相关。总共采样了15个佛兰芒低地河流。在环境部分（水和沉积物）和蠕虫组织（全部和亚细胞部分）中测量了Cd，Cu，Zn，Pb，Ni，As，Cr，Co和Ag的浓度。此外，在蠕虫组织中测量了总的胞浆MTLP浓度。我们的结果表明，Cd，Pb，Ni和Cr主要作为生物脱毒金属（BDM）储存，而Cu，Zn，As和Ag大多以金属敏感组分（MSF）的形式提供。注意到缺氧（SEMMe-AVS 0；主要以MSF存储）沉积物之间的累积Cd，Ni和Co亚细胞分布存在显着差异。此外，当SEMTot-AVS> 0时，发现MTLP诱导迅速增加。我们的结果表明，在缺氧条件下，积累的与硫键结合的金属被解毒，几乎无法用于T.tubifex的代谢。

著录项

  • 来源
    《Environmental Science & Technology》 |2011年第7期|p.3131-3137|共7页
  • 作者

    Maarten De Jonge; Marleen Eyckmans; Ronny Blust; Lieven Bervoets;

  • 作者单位

    Department of Biology, Ecophysiology, Biochemistry and Toxicology Group, University of Antwerp, Groenenborgerlaan 171,B-2020 Antwerp, Belgium;

    Department of Biology, Ecophysiology, Biochemistry and Toxicology Group, University of Antwerp, Groenenborgerlaan 171,B-2020 Antwerp, Belgium;

    Department of Biology, Ecophysiology, Biochemistry and Toxicology Group, University of Antwerp, Groenenborgerlaan 171,B-2020 Antwerp, Belgium;

    Department of Biology, Ecophysiology, Biochemistry and Toxicology Group, University of Antwerp, Groenenborgerlaan 171,B-2020 Antwerp, Belgium;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号