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https://irlib.pccu.edu.tw/handle/987654321/48812
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| 題名: | Flavonoid Compounds and Photosynthesis in Passiflora Plant Leaves under Varying Light Intensities |
| 作者: | Ni, YW (Ni, Yu-Wan)
Lin, KH (Lin, Kuan-Hung)
Chen, KH (Chen, Kai-Hsien)
Wu, CW (Wu, Chun-Wei)
Chang, YS (Chang, Yu-Sen) |
| 貢獻者: | 園生系 |
| 關鍵詞: | flavonoids
isovitexin
light intensity
orientin
passionfruit |
| 日期: | 2020-05 |
| 上傳時間: | 2020-11-09 13:44:34 (UTC+8) |
| 摘要: | Functional constituents in the leaves ofPassifloraplants contain antidepressant and antianxiety effects which are beneficial to human health and fitness. The objective of this study was to investigate leaf growth, physiological parameters, and secondary metabolite contents of Tainung No. 1 variety (P. edulis x P. edulis f. flavicarpa.) andP. suberosain response to three light intensity conditions, including 100% light intensity (LI-100), 50% light intensity (LI-50), and 15% light intensity (LI-15) for 2 months. The leaf number, length, width, area, dry weight (DW), minimal fluorescence (Fo), maximal fluorescence (Fm), maximum photochemical efficiency of photosystem II, and soil-plant analysis development (SPAD) values of all tested plants increased with a decreasing light intensity, except for the leaf number and DW ofP. suberosaplants. Low values of the net photosynthetic rate, transpiration rate, and stomatal conductance of Tainung No. 1 leaves in the LI-15 treatment showed the acclimation capacity of these plants. These observations together with high values of leaf growth traits of Fo, Fm, SPAD, and the intercellular-to-atmospheric CO(2)concentration ratio indicate their physiological plasticity, which is of fundamental importance when cultivating plants in environments with different light availabilities. Wide variations occurred in total phenol (TP), total flavonoid (TF), orientin (OR), and isovitexin (IV) contents of the twoPassifloravarieties, andP. suberosacontained higher TP and TF contents than did Tainung No. 1 in each light treatment but IV content ofP. suberosawas lower than that of Tainung No. 1 in the LI-15 treatment. Moreover, increases in TF, OR, and IV contents of Tainung No. 1 andP. suberosawere clear in the LI-50 and LI-100 treatments, respectively, compared to LI-15 treatment. Leaf growth, physiological parameters, and secondary metabolite accumulations inPassifloraspecies can be optimized for commercial production via lighting control technologies, and this approach may also be applicable to leafy vegetables to produce a stable industrial supply of high leaf yields and metabolite contents. |
| 關聯: | PLANTS-BASEL 卷冊: 9 期: 5 文獻號碼: 633 |
| 顯示於類別: | [園藝暨生物技術學系] 期刊論文
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