Biotechnology Bulletin ›› 2021, Vol. 37 ›› Issue (6): 192-201.doi: 10.13560/j.cnki.biotech.bull.1985.2020-1347

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Research Progress on the Regulation of NO3- Uptake and Transport in Plant

LIU Hai-guang1,2(), LUO Zhen2(), DONG He-zhong1,2()   

  1. 1. College of Life Science,Shandong Normal University,Ji’nan 250014
    2. Cotton Research Center,Shandong Academy of Agricultural Sciences,Ji’nan 250100
  • Received:2020-11-02 Online:2021-06-26 Published:2021-07-08
  • Contact: LUO Zhen,DONG He-zhong E-mail:18369656696@163.com;ppluo440@126.com;donghezhong@163.com

Abstract:

Nitrogen is the most demanded macro-nutrient during growth of plants,plays an important role in the growth and development as well as morphogenesis of plants. Excessive application of nitrogen fertilizer leads to a decline in plant nitrogen use efficiency(NUE),which not only causes waste of nitrogen fertilizer,but also leads to soil diffused pollution,thus brings severe challenges to the development of green agriculture and has attracted widespread global attention. NO3- is the main inorganic nitrogen sources used by plants,and studying the uptake and transport mechanism of NO3- is of practical significance for improving NUE. In this paper,we reviewed the physiological processes and molecular mechanisms about how NO3- is of uptake from soil via plant roots and further transported from the roots to the shoot and distributed among the organs. We summarized and put forward the techniques and measures to regulate plant nitrogen uptake and transport,and prospected future research and application,aiming to provide basis and guidance for rational application of nitrogen fertilizer and improvement of NUE.

Key words: NO3-, nitrogen use efficiency, nitrogen uptake and transport, molecular mechanisms, regulation measure