文化大學機構典藏 CCUR:Item 987654321/35876
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    Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/35876


    Title: Effects of Light Quality on the Chlorophyll Degradation Pathway in Rice Seedling Leaves
    Authors: Chen, CC (Chen, Chang-Chang)
    Lin, KH (Lin, Kuan-Hung)
    Huang, MY (Huang, Meng-Yuan)
    Huang, WD (Huang, Wen-Dar)
    Yang, CM (Yang, Chi-Ming)
    Contributors: 園生系
    Keywords: biosynthesis and degradation pathways
    light quality
    rice
    Date: 2016-07
    Issue Date: 2017-04-12 15:38:37 (UTC+8)
    Abstract: The objective of this study was to investigate the dynamics of chlorophyll (Chl), biosynthetic intermediates (protoporphyrin IX, magnesium protoporphyrin IX, and protochlorophyllide), degradation intermediates [chlorophyllide (Chlide), pheophytin (Phe), and pheophorbide (Pho)], and carotenoids (Car) in leaves of rice seedlings. Two rice varieties, `Taichung Shen 10' ('TCS10') and 'IR1552', were grown under different light quality conditions controlled by light emitting diodes (LED). Lighting treatments for rice seedlings were included by red (R), blue (B), green (G), and red + blue (RB), with fluorescent lighting (FL) as the control and photosynthetic photon flux density being set at 105 mu mol m(-2) S-1. The results show that lower levels of Chl and Car in leaves were detected under G lighting, and light quality did not mediate porphyrins in biosynthetic pathways. Rice seedling leaves took Chl -> Phe -> Pho and Chl -> Chlide -> Pho as the major and minor degradation routes, respectively. Furthermore, higher Phe/Chlide ratios were observed under G and FL lighting conditions, indicating that green-enriched environments can up-regulate the minor degradation route in leaves.
    Relation: NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA 卷: 44 期: 2 頁碼: 393-398
    Appears in Collections:[園藝暨生物技術學系] 期刊論文

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