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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (6): 1575-1587.doi: 10.16420/j.issn.0513-353x.2024-0541

• Cultivation?Physiology & Biochemistry • Previous Articles     Next Articles

Effects of Foliar Spraying of Nano-selenium on Amino Acid Content and Metabolome of Kiwifruit

LIU Yanan1, BAO Dandan1, ZHANG Sipu2, NIU Jiajia2, XU Zhifei3, YANG Yongfeng3, and LU Yunfeng1,*()   

  1. 1 School of Life Science and Agricultural Engineering,Nanyang Normal University,Nanyang,Henan 473061,China
    2 Institute of Horticulture,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China
    3 Henan Funiushan Biotechnology Co.,Ltd.,Nanyang,Henan 474350,China
  • Received:2024-08-08 Revised:2025-04-07 Online:2025-06-20 Published:2025-06-20
  • Contact: and LU Yunfeng

Abstract:

To explore the effects and mechanisms of nano-selenium on the amino acid nutritional components of kiwifruit,‘Xuxiang’kiwifruit was used as the experimental material,with foliar spraying of nano-selenium at concentrations of 0,10,15,20,and 25 mg · L-1. The changes in amino acid content were measured,and metabolomics sequencing of kiwifruit was performed. The results showed that after foliar spraying with 15 mg · L-1 nano-selenium,the content of threonine,valine,isoleucine,leucine,phenylalanine,and other amino acids significantly increased,with a higher proportion of umami amino acids. A non-targeted metabolomics analysis identified 12 861 metabolites. Through KEGG and HMDB databases,the biosynthesis and metabolism of lipids and lipophilic molecules,phenylpropanoids,polyketides,and organic oxygen compounds in mature kiwifruit were further analyzed. The metabolites were mainly enriched in metabolic pathways related to amino acid metabolism,secondary metabolites,terpenoid compounds,and polyketide metabolism. Nano-selenium may increase the amino acid content in kiwifruit by stimulating secondary metabolic levels.

Key words: kiwifruit, nano-selenium, amino acids, nutritional evaluation, metabolomics