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Bulletin of Botanical Research ›› 2022, Vol. 42 ›› Issue (6): 1062-1069.doi: 10.7525/j.issn.1673-5102.2022.06.016

• Physiology and Ecology • Previous Articles     Next Articles

Effects of Selenium Treatment on Physiology and Primary Metabolism of Astragalus adsurgens

Wanting JIANG1,2, Nan YANG1,2, Chen CHEN1,2, Xiaorui GUO1,2, Zhonghua TANG1,2, Hongzheng WANG1,2()   

  1. 1.College of Chemistry,Chemical Engineering and Resource Utilization,Northeast Forestry University,Harbin 150040
    2.The Key Laboratory of Forest Plant Ecology Ministry of Education,Northeast Forestry University,Harbin 150040
  • Received:2022-01-25 Online:2022-11-20 Published:2022-11-22
  • Contact: Hongzheng WANG E-mail:hzwang@nefu.edu.cn
  • About author:JIANG Wanting(1995—),female,graduate student,mainly engaged in the study of environmental stress and secondary metabolism the medicine plants.
  • Supported by:
    Fundamental Work Special Project of the Ministry of Science and Technology(2019FY100505)


In order to clarify the effects of different concentration Se treatments on the growth, development, photosynthesis and the primary metabolism of plant, Astragalus adsurgens, with high Se accumulation capacity under hydroponic condition was used as material. The results showed that different concentrations of Se had different effects on the growth and development of A. adsurgens. Low concentration Se treatment(5 μmol·L-1) significantly promoted the growth of A. adsurgens, whereas high concentration Se treatment(100 μmol·L-1) had the opposite effect. The content of Se in roots and shoots was positively correlated with the treatment concentration, and the transport coefficient of Se in A. adsurgens decreased gradually with the increase of selenium concentration. The results of photosynthetic pigment content and leaf chlorophyll fluorescence parameters showed that low-concentrations of Se promoted photosynthesis of A. adsurgens, while high-concentrations of Se significantly inhibited it, the Se transport coefficient under 100 μmol·L-1 treatment decreased by 83.5% compared with 5 μmol·L-1 treatment. After detection and analysis of primary metabolites, it was found that low concentrations of Se up-regulated the metabolic pathways related to amino acid metabolism in plant roots and shoots, while high concentrations of Se mainly up-regulated the metabolic levels of primary metabolites that were closely related to the synthesis of secondary metabolites. Our results showed that treatment with low concentration of Se increased the photosynthesis level of A. adsurgens and the level of primary metabolism related to growth, and promoted plant growth; treatment with high concentration Se increased the level of A. adsurgens by reducing the transport of Se to the ground and more primary metabolites for the synthesis of secondary metabolites were used, and the tolerance of plants to Se stress was improved.

Key words: Astragalus adsurgens, selenium treatment, primary metabolites, metabolic pathways

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