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J Agric Food Chem

Title:		Metabolite Profiling and Transcriptome Analysis Revealed the Chemical Contributions of Tea Trichomes to Tea Flavors and Tea Plant Defenses
Author(s):		Li P; Xu Y; Zhang Y; Fu J; Yu S; Guo H; Chen Z; Chen C; Yang X; Wang S; Zhao J;
Address:		"State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China. Tea Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China. Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China"
Journal Title:		J Agric Food Chem
Year:		2020
Volume:		20200909
Issue:		41
Page Number:		11389 - 11401
DOI:		10.1021/acs.jafc.0c04075
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"Tea trichomes contain special flavor-determining metabolites; however, little is known about how and why tea trichomes produce them. Integrated metabolite and transcriptome profiling on tea trichomes in comparison with that on leaves showed that trichomes contribute to tea plant defense and tea flavor and nutritional quality. These unicellular, nonglandular, and unbranched tea trichomes produce a wide array of tea characteristic metabolites, such as UV-protective flavonoids, insect-toxic caffeine, herbivore-defensive volatiles, and theanine, as evidenced by the expression of whole sets of genes involved in different metabolic pathways. Both dry and fresh trichomes contain several volatiles and flavonols that were not found or at much low levels in trichome-removed leaves, including benzoic acid derivatives, lipid oxidation derivatives, and monoterpene derivatives. Trichomes also specifically expressed many disease signaling genes and various antiherbivore or antiabiotic peptides. Trichomes are one of the domestication traits in tea plants. Tea trichomes contribute to tea plant defenses and tea flavors"
Keywords:		"Camellia sinensis/chemistry/genetics/*metabolism Flavonoids/chemistry/metabolism Flavoring Agents/*chemistry/metabolism Gene Expression Profiling Gene Expression Regulation, Plant Plant Leaves/chemistry/genetics/metabolism Tea/chemistry Transcriptome Tric;"
Notes:		"MedlineLi, Penghui Xu, Yujie Zhang, Yanrui Fu, Jiamin Yu, Shuwei Guo, Huimin Chen, Zhihui Chen, Changsong Yang, Xiaogen Wang, Shucai Zhao, Jian eng 2020/08/28 J Agric Food Chem. 2020 Oct 14; 68(41):11389-11401. doi: 10.1021/acs.jafc.0c04075. Epub 2020 Sep 9"