Chen C-C, Huang M-Y, Lin K-H, Hsueh M-T
National Research Institute of Chinese Medicine, 11221 Taipei, Taiwan.
Department of Life Sciences, Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, 40227 Taichung, Taiwan.
Photosynthetica. 2022 Aug 16;60(3):420-429. doi: 10.32615/ps.2022.034. eCollection 2022.
is a functional food due to its antioxidant activity. The aim of this study was to investigate the responses of photosynthesis, growth, and antioxidant properties in to nitrogen (N) applications. plants were cultivated under low N (LN), medium N (MN), and high N (HN), and harvested at the reproductive phase. The dry mass and plant height of plants increased with elevated N, and the dry mass of HN was saturated. Net photosynthetic rate, stomatal conductance, and water-use efficiency in the leaves at HN were strengthened. Meanwhile, under HN, chlorophylls (Chl), their precursors, and degradation intermediates in the leaves were highly accumulated, and the minor route of Chl degradation pathway was induced dramatically. However, 2,2-diphenyl-1-picrylhydrazyl radical-scavenging, ferrous iron-chelating, and reducing power in the extracts were reduced under HN. Conclusively, an appropriate N application balanced the yield and antioxidant properties of . .
因其抗氧化活性而成为一种功能性食品。本研究的目的是调查[植物名称]在施氮情况下光合作用、生长和抗氧化特性的响应。[植物名称]在低氮（LN）、中氮（MN）和高氮（HN）条件下种植，并在生殖阶段收获。[植物名称]的干质量和株高随氮含量升高而增加，高氮条件下干质量达到饱和。高氮条件下叶片的净光合速率、气孔导度和水分利用效率增强。同时，在高氮条件下，叶片中的叶绿素（Chl）、其前体和降解中间体大量积累，叶绿素降解途径的次要途径被显著诱导。然而，在高氮条件下，提取物中的2,2-二苯基-1-苦基肼自由基清除能力、亚铁离子螯合能力和还原能力降低。总之，适当施氮平衡了[植物名称]的产量和抗氧化特性。
