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Molecules 2018, 23(7), 1817; https://doi.org/10.3390/molecules23071817

Insights into Tissue-specific Specialized Metabolism in Tieguanyin Tea Cultivar by Untargeted Metabolomics

1
College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
2
FAFU-UCR Joint Center for Horticultural Biology and Metabolomics, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
3
Department of Plant & Environmental Sciences, Weizmann Institute of Science, P. O. Box 26, Rehovot 7610001, Israel
4
Center for Plant Cell Biology, Institute for Integrative Genome Biology, and Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editors: Marcello Locatelli, Simone Carradori and Andrei Mocan
Received: 3 July 2018 / Revised: 18 July 2018 / Accepted: 19 July 2018 / Published: 21 July 2018
Full-Text   |   PDF [2942 KB, uploaded 23 July 2018]   |  

Abstract

Tea plants produce extremely diverse and abundant specialized metabolites, the types and levels of which are developmentally and environmentally regulated. However, little is known about how developmental cues affect the synthesis of many of these molecules. In this study, we conducted a comparative profiling of specialized metabolites from six different tissues in a premium oolong tea cultivar, Tieguanyin, which is gaining worldwide popularity due to its uniquely rich flavors and health benefits. UPLC-QTOF MS combined with multivariate analyses tentatively identified 68 metabolites belonging to 11 metabolite classes, which exhibited sharp variations among tissues. Several metabolite classes, such as flavonoids, alkaloids, and hydroxycinnamic acid amides were detected predominantly in certain plant tissues. In particular, tricoumaroyl spermidine and dicoumaroyl putrescine were discovered as unique tea flower metabolites. This study offers novel insights into tissue-specific specialized metabolism in Tieguanyin, which provides a good reference point to explore gene-metabolite relationships in this cultivar. View Full-Text
Keywords: oolong tea; Tieguanyin tea cultivar; metabolite profiling; UPLC-QTOF MS; metabolomics oolong tea; Tieguanyin tea cultivar; metabolite profiling; UPLC-QTOF MS; metabolomics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chen, S.; Lin, J.; Liu, H.; Gong, Z.; Wang, X.; Li, M.; Aharoni, A.; Yang, Z.; Yu, X. Insights into Tissue-specific Specialized Metabolism in Tieguanyin Tea Cultivar by Untargeted Metabolomics. Molecules 2018, 23, 1817.

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