Cereal Research Communications

, Volume 38, Issue 4, pp 482–488 | Cite as

The effect of amino acids on nitrate uptake by wheat roots

  • J. Z. LiEmail author
  • G. Y. He
  • W. J. Cram
Open Access


To identify feedback signal(s) controlling nitrate uptake by wheat roots, the effects of 13 amino acids on time course of net nitrate influx have been investigated. A new non-invasive technique of measuring net nitrate influx with a high time resolution of minutes has enabled us to make this comparison. The results showed that glutamate caused a rapid and large decrease of net nitrate influx by roots. Aspartic acid, asparagine, glutamine caused a relatively slow decrease of net nitrate influx with a lag of 0.5–1.5 h. Other amino acids had a small effect or even no effect. It is speculated that glutamate is most likely to be a negative feedback signal.


amino acids nitrate uptake non-invasive signal Triticum aestivum L. 


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© Akadémiai Kiadó, Budapest 2010

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.School of Life ScienceTaizhou UniversityLinhai, ZhejiangChina
  2. 2.China-UK HUST-RRes Genetic Engineering and Genomics Joint Laboratory, the Genetic Engineering International Cooperation base of Ministry of Science and Technology, the Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and TechnologyHuazhong University of Science & Technology (HUST)Wuhan, HubeiChina

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