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首页> 外文期刊>Chemosphere >Ecotoxicological effects of typical personal care products on seed germination and seedling development of wheat (Triticum aestivum L.)
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Ecotoxicological effects of typical personal care products on seed germination and seedling development of wheat (Triticum aestivum L.)

机译：典型个人护理产品对小麦种子发芽和幼苗发育的生态毒理作用

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摘要

Biochemical responses of wheat (Triticum aestivum L.) seedlings stressed by two typical personal care products (PCPs) - triclosan (TCS) and galaxolide (HHCB) were experimentally investigated to assess their ecological risks. The results showed that wheat shoot and root elongation was significantly inhibited by 50-250 mg L~(-1) TCS and HHCB. Wheat roots were sensitive to TCS, while shoots were sensitive to HHCB. The median effect concentration (EC_(50)) of TCS and HHCB based on the inhibition of their sensitive sites were 147.8 and 143.4 mg L~(-1) respectively. Moreover, the damage of wheat seedlings treated by low concentration of TCS and HHCB during a long period cannot be neglected. After a 21-d exposure, 0.2-3.0 mg L~(-1) TCS and HHCB treatment caused the damage to the accumulation of chlorophyll (CHL), the synthesis of soluble protein (SP), and the activity of peroxidase (POD) and superoxide dismutases (SOD) in different degree. However, different changing trends of these physiological indexes treated by different PCPs were observed after 7-d to 14-d exposures, especially the activity of POD and SOD. The activity of POD and SOD in wheat leaves and roots decreased with an increase in the concentration of TCS and the exposure time. However, the enzyme activities in wheat leaves treated by 0.2-3.0 mg L~(-1) HHCB increased after a 14-d exposure, and with the prolongation of exposure time, the enzyme activities significantly decreased. The variations in these physiological indexes of wheat could be considered as good biomarkers of serious stress by TCS and HHCB in the environment.
机译：通过实验研究了两种典型的个人护理产品（PCP）-三氯生（TCS）和galaxolide（HHCB）胁迫的小麦（Triticum aestivum L.）幼苗的生化响应，以评估其生态风险。结果表明，50〜250 mg L〜（-1）TCS和HHCB显着抑制小麦芽和根的伸长。小麦根对TCS敏感，而芽对HHCB敏感。基于对TCS和HHCB敏感部位的抑制作用，TCS和HHCB的中位效应浓度（EC_（50））分别为147.8 mg L〜（-1）。此外，长期忽略低浓度TCS和HHCB处理对小麦幼苗的损害。暴露21天后，0.2-3.0 mg L〜（-1）TCS和HHCB处理对叶绿素（CHL）的积累，可溶性蛋白（SP）的合成和过氧化物酶（POD）的活性造成了损害。和超氧化物歧化酶（SOD）的程度不同。然而，在暴露7到14 d后，观察到不同PCP处理的这些生理指标的变化趋势，尤其是POD和SOD的活性。随着TCS浓度和暴露时间的增加，小麦叶片和根中的POD和SOD活性降低。然而，暴露14-d后，用0.2-3.0 mg L〜（-1）HHCB处理的小麦叶片中的酶活性增加，并且随着暴露时间的延长，酶活性显着下降。 TCS和HHCB在环境中可将小麦这些生理指标的变化视为严重胁迫的良好生物标志。

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  • 来源
    《Chemosphere》 |2009年第10期|1428-1434|共7页
  • 作者

    Jing An; Qixing Zhou; Yuebing Sun; Zhiqiang Xu;

  • 作者单位

    Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Graduate School of the Chinese Academy of Sciences, Beijing 100049, China;

    Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;

    Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Graduate School of the Chinese Academy of Sciences, Beijing 100049, China;

    Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Graduate School of the Chinese Academy of Sciences, Beijing 100049, China;

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

    triclosan; galaxolide; ecological risk; wheat; seed germination; antioxidative enzyme;

    机译：三氯生加拉索利德生态风险;小麦;种子发芽抗氧化酶;

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