Journal of Integrative Agriculture ›› 2023, Vol. 22 ›› Issue (6): 1695-1703.DOI: 10.1016/j.jia.2023.04.002

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代谢组学和转录组学揭示了不同LED光质对草莓中类胡萝卜素代谢的影响以及蓝光促进叶黄素合成的分子机制

  

  • 收稿日期:2022-08-05 修回日期:2023-04-15 接受日期:2023-03-24 出版日期:2023-06-20 发布日期:2023-03-24

Metabolomic and transcriptomic analysis reveals the molecular mechanism by which blue light promotes lutein synthesis in strawberry

CHEN Xiao-dong, CAI Wei-jian, XIA Jin, YUAN Hua-zhao, WANG Qing-lian, PANG Fu-hua, ZHAO Mi-zhen# #br#   

  1. Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing 210000, P.R.China

  • Received:2022-08-05 Revised:2023-04-15 Accepted:2023-03-24 Online:2023-06-20 Published:2023-03-24
  • About author:CHEN Xiao-dong, E-mail: nwsuaf612@163.com; #Correspondence ZHAO Mi-zhen, E-mail: njzhaomz@163.com
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (31901996), the Natural Science Foundation of Jiangsu Province, China (BK20190264), and the Major Agricultural New Varieties Creation Project of Jiangsu Province, China (PZCZ201721). 

摘要:

类胡萝卜素是人类饮食的重要组成部分,水果是类胡萝卜素的主要来源。水果中类胡萝卜素的合成和调节对水果品质的形成非常重要。在中国,草莓是冬季种植的主要时令水果之一。先前的研究表明,光对草莓中花青素、糖和多酚的代谢有很大影响。然而,我们对光如何调节草莓中类胡萝卜素代谢的机理还知之甚少。在本研究中,我们研究了蓝光、红光、黄绿光和白光对草莓中类胡萝卜素代谢的影响。我们的研究表明蓝光处理促进了草莓中叶黄素等多种类胡萝卜素的合成。转录组测序数据显示,蓝光处理促进了草莓中番茄红素ε-环化酶(FaLCYE)编码基因的表达。在草莓果实中瞬时过量表达FaLCYE可促进叶黄素在草莓中的积累。综上,我们的研究结果表明蓝光可以通过诱导FaLCYE的表达从而促进草莓中叶黄素的合成。

Abstract:

Carotenoids are an important component of the human diet, and fruit is a primary source of carotenoids.  The synthesis and regulation of carotenoids in fruit are important contributors to the formation of fruit quality.  In China, strawberry is one of the main seasonal fruits grown in the winter.  Previous studies have shown that light has a significant effect on the metabolism of anthocyanins, sugars, and polyphenols in strawberry.  However, the understanding of the role of light in regulating the metabolism of carotenoids in strawberry remains limited.  This study investigated the effects of blue, red, yellow-green, and white light on carotenoid metabolism in strawberry.  Blue light treatment promoted the synthesis of multiple carotenoids, including lutein, compared with the other three treatment groups.  The RNA sequencing data revealed that blue light treatment promoted the expression of lycopene ε-cyclase (LCYE), and the transient overexpression of LCYE in strawberry fruit promoted lutein accumulation in strawberry.  Overall, the results suggest that blue light can promote the synthesis of lutein in strawberry by inducing the expression of LCYE.

Key words: carotenoid , LED light ,  strawberry ,  lutein