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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (17): 1922-1924. 上一篇    下一篇

研究简报

Ce(III)在辣根体中的迁移

郭晓珊1,2, 周青3, 朱旭东4, 陆天虹2,5, 黄晓华*,1,2   

  1. (1江南大学化学与材料工程学院 无锡 214122)
    (2南京师范大学化学与环境科学学院 南京 210097)
    (3江南大学工业生物技术教育部重点实验室 无锡 214122)
    (4南京农业大学理学院同位素实验室 南京 210095)
    (5中国科学院长春应用化学研究所 长春 130022)
  • 投稿日期:2006-10-27 修回日期:2007-03-05 发布日期:2007-09-14
  • 通讯作者: 黄晓华

Migration of a Rare Earth Element Cerium(III) in Horseradish

GUO Xiao-Shan1,2; ZHOU Qing3; ZHU Xu-Dong4; LU Tian-Hong2,5; HUANG Xiao-Hua*,1,2   

  1. (1 School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214122)
    (2 Department of Chemistry, Nanjing Normal University, Nanjing 210097)
    (3 The Key Laboratory of Industrial Biotechnology of the Ministry of Education, Southern Yangtze University, Wuxi 214122)
    (4 College of Science, Nanjing Ag-ricultural University, Nanjing 210095)
    (5 Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022)
  • Received:2006-10-27 Revised:2007-03-05 Published:2007-09-14

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应用放射性同位素示踪法, 即结合放射自显影和液体闪烁器检测及电镜放射自显影技术, 首次定性、定量地研究Ce(III)离子在辣根植物中的迁移. 结果表明: (1) Ce(III)离子能被辣根植物吸收并随时间发生迁移; (2)电镜放射自显影结果显示, Ce(III)离子迁移是通过质外体至共质体进入细胞的. Ce(III)离子在辣根植物体中的行为, 为稀土离子植物环境效应机理及辣根植物安全防护提供借鉴.

关键词: 稀土元素铈, 辣根, 迁移, 放射自显影

The migration of a rare earth element Ce(III) in horseradish was qualitatively and quantitatively investigated for the first time. The results from the experiment are as follows: Ce(III) could be absorbed by the horseradish and could migrate with time in the horseradish, and the migration pathway of the Ce(III) in the horseradish can be revealed that the Ce(III) could enter mesophyll cells and migrate through the apoplast and symplast channels of the leaf (or plasmodesma) in the horseradish. This study of the behavior of the Ce(III) in the horseradish provided a reference point for a better understanding of the effect mechanism of rare earth elements on plant growth, environment and food safety.

Key words: Ce(III), horseradish, migration, autoradiography