Journal of Nuclear Agricultural Sciences ›› 2020, Vol. 34 ›› Issue (5): 982-993.DOI: 10.11869/j.issn.100-8551.2020.05.0982

• Induced Mutatuions for Plant Breeding·Agricultural Biotechnology • Previous Articles     Next Articles

Nitrate Uptake, Transport and Signaling Regulation Pathways

LI Chenyang1,2, KONG Xiangqiang1,2,*, DONG Hezhong1,2,*   

  1. 1College of Life Sciences, Shandong Normal University, Jinan, Shandong 250014;
    2Cotton Research Center, Shandong Academy of Agricultural Sciences/Key Laboratory of Cotton Breeding and Cultivation in Huang-Huai-Hai Plain, Ministry of Agriculture, Jinan, Shandong 250100
  • Received:2019-10-08 Online:2020-05-10 Published:2020-03-23


李晨阳1,2, 孔祥强1,2,*, 董合忠1,2,*   

  1. 1山东师范大学生命科学学院,山东 济南 250014;
    2山东棉花研究中心/农业部黄淮海棉花遗传改良与栽培生理重点实验室,山东 济南 250100
  • 通讯作者: *孔祥强,男,研究员,主要从事植物生理及分子生物学研究。E-mail:;董合忠,男,研究员,主要从事棉花栽培及育种研究。E-mial:。同为通讯作者。
  • 作者简介:李晨阳,男,主要从事植物生理及分子生物学研究。E-mail:
  • 基金资助:



Nitrate is the major forms of nitrogen that plants absorb from the soil, and its uptake and utilization is a highly coordinated and complex process. For the sake of survive in various environmental conditions, plants have evolved suitable nitrate uptake and utilization mechanisms to adapt to a wide range of environmental conditions. There are various types of nitrate receptors in plant roots, which can sense different concentrations of external nitrate. The low- or high-affinity nitrate uptake system was activated to absorb nitrate from the environment according to the levels of external nitrate. Once nitrate is taken up into root cells, most of it is transported to shoots for assimilation, and synthesizes macromolecular substances to optimize plant growth. When the nitrate supply is too much for use immediately, the plant can store the excess nitrate into vacuoles and mediate it efflux from vacuoles to the cytosol for assimilation when needed. During plant growth and development, nitrate in the old and mature leaves can be redistributed into developing tissues to promote their growth. Many genes related to nitrate absorption, transportation, storage, assimilation and signaling regulation are activated orderly and work coordinately to absorb and utilize nitrate efficiently. This review summarizes the NRT1 and NRT2 nitrate uptake-related genes and their functions, as well as related transcription factors involved in primary nitrate response and small signal peptides in nitrate signaling transduction and exchange among different tissues. In order to further understand the mechanisms of plant uptake and utilize nitrate, and therefore provides new ideas in increasing nitrogen-use efficiency of crop by breeding and cultivation techniques.

Key words: nitrate, transporter, signaling, nitrogen-use efficiency



关键词: 硝态氮, 转运体, 信号, 氮素利用率