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<p>Crop metabolic processes are pivotal determinants of yield and nutritional quality. In this study, foliar application of selenium-engineered nanomaterials (Se ENMs) at 10&#xa0;mg·L⁻¹ substantially increased Se accumulation across cherry radish tissues. Relative to controls, Se concentrations rose by 172.4-fold in leaves, 130.9-fold in stems, 29.4-fold in pulp, and 14.9-fold in pericarp. Notably, the bioavailability of selenium under Se ENM treatment was markedly higher than that under selenite (SeO₃²⁻) treatment. Exposure to Se ENMs enhanced the net photosynthetic rate by 35.6%, which was probably attributed to the marked increases in chlorophyll a (71.9%) and chlorophyll b (278.6%) contents. Consequently, the yield of cherry radishes was boosted by 49.1%, primarily due to the enlarged taproot diameter induced by Se ENMs. Furthermore, metabolomic analyses revealed that Se ENM exposure accelerated amino acid metabolism and the tricarboxylic acid (TCA) cycle, leading to elevated production of flavonoids, amino acids, and organic acids in both leaves and fruits relative to the control. In addition, the contents of glutathione and ascorbic acid in fruits increased significantly by 32.0% and 65.1%, respectively. These compounds, renowned for their medicinal and antioxidant properties, highlight the great potential of Se ENMs as nano-fertilizers to simultaneously improve crop yield and nutritional value.</p> Graphical Abstract <p></p>

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Synergistic Regulation of Metabolic and Photosynthetic Pathways by Selenium Engineered Nanomaterials for Yield and Nutritional Improvement in Cherry Radishes

  • 期刊论文

  • 发表日期：

    2026年7月4日

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  • Bingxu Cheng,
  • Yusong Yao,
  • Yaying Sun,
  • Jiangshan Zhang,
  • Chuanxi Wang

摘要

Crop metabolic processes are pivotal determinants of yield and nutritional quality. In this study, foliar application of selenium-engineered nanomaterials (Se ENMs) at 10 mg·L⁻¹ substantially increased Se accumulation across cherry radish tissues. Relative to controls, Se concentrations rose by 172.4-fold in leaves, 130.9-fold in stems, 29.4-fold in pulp, and 14.9-fold in pericarp. Notably, the bioavailability of selenium under Se ENM treatment was markedly higher than that under selenite (SeO₃²⁻) treatment. Exposure to Se ENMs enhanced the net photosynthetic rate by 35.6%, which was probably attributed to the marked increases in chlorophyll a (71.9%) and chlorophyll b (278.6%) contents. Consequently, the yield of cherry radishes was boosted by 49.1%, primarily due to the enlarged taproot diameter induced by Se ENMs. Furthermore, metabolomic analyses revealed that Se ENM exposure accelerated amino acid metabolism and the tricarboxylic acid (TCA) cycle, leading to elevated production of flavonoids, amino acids, and organic acids in both leaves and fruits relative to the control. In addition, the contents of glutathione and ascorbic acid in fruits increased significantly by 32.0% and 65.1%, respectively. These compounds, renowned for their medicinal and antioxidant properties, highlight the great potential of Se ENMs as nano-fertilizers to simultaneously improve crop yield and nutritional value.

Graphical Abstract