Cereal Research Communications

, Volume 45, Issue 4, pp 598–609 | Cite as

The Role of Iron Plaque in Transport and Distribution of Chromium by Rice Seedlings

  • X. -Z. YuEmail author
  • M. -R. Lu
  • X. -H. Zhang


Hydroponic studies were conducted to investigate the role of iron plaque on transport and distribution of chromium (Cr) by rice seedlings. Microscopical observations indicate that iron plaque developed quickly at the root surface of rice seedlings, but the distribution of iron plaque was more intense near root base and less towards root tip. Results showed that rice seedlings exposed to Cr(III) depicted significantly higher capacity for Cr accumulation in plant tissues than Cr(VI) in the presence of iron plaque. However, transport of Cr within plant cells was more evident in Cr(VI) treatment with iron plaque than Cr(III) treatment. Results also showed that there are significant impact on transport of K, Mn and Zn in rice seedlings treated with Cr(VI) in the presence of iron plaque, while significant effect on transport of Mn and Zn were observed in Cr(III)-treated rice seedlings. Results from detached root test provide additional evidence to confirm the presence of iron plaque, that had different impact on Cr uptake when Cr(VI) or Cr(III) was supplied.


chromium translocation iron plaque rice DCB extract 


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This work was financially supported by the research foundations of Guilin University of Technology (Grant No.: GUTRC2011007) and the Guangxi Talent Highland for Hazardous Waste Disposal Industrialization.

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The Role of Iron Plaque in Transport and Distribution of Chromium by Rice Seedlings


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© Akadémiai Kiadó, Budapest 2017

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.The Guangxi Key Laboratory of Theory & Technology for Environmental Pollution Control, College of Environmental Science & EngineeringGuilin University of TechnologyPeople’s Republic of China

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