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J Agric Food Chem

Title:		Transcriptomic and Phytochemical Analyses Reveal Root-Mediated Resource-Based Defense Response to Leaf Herbivory by Ectropis oblique in Tea Plant ( Camellia sinensis)
Author(s):		Yang H; Wang Y; Li L; Li F; He Y; Wu J; Wei C;
Address:		"Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming , Yunnan 650201 , People's Republic of China"
Journal Title:		J Agric Food Chem
Year:		2019
Volume:		20190404
Issue:		19
Page Number:		5465 - 5476
DOI:		10.1021/acs.jafc.9b00195
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"Leaf herbivory on tea plants ( Camellia sinensis) by tea geometrids ( Ectropis oblique) severely threaten the yield and quality of tea. In previous work, we found that local defense response was induced in damaged leaves by geometrids at the transcriptome level. Here, we investigated the systemic response triggered in undamaged roots and the potential role of roots in response to leaf herbivory. Comparative transcriptome analysis and carbohydrate dynamics indicated that leaf herbivory activated systemic carbon reallocation to enhance resource investment for local secondary metabolism. The crucial role of jasmonic acid and the involvement of other potential hormone signals for local and systemic signaling networks were supported by phytohormone quantification and dynamic expression analysis of phytohormone-related genes. This work represents a deep understanding of the interaction of tea plants and geometrids from the perspective of systems biology and reveals that tea plants have evolved an intricate root-mediated resource-based resistance strategy to cope with geometrid attack"
Keywords:		"Animals Camellia sinensis/chemistry/*genetics/immunology/parasitology Cyclopentanes/immunology Feeding Behavior Gene Expression Profiling Gene Expression Regulation, Plant Herbivory/physiology Moths/*physiology Oxylipins/immunology Phytochemicals/*chemist;"
Notes:		"MedlineYang, Hua Wang, Yanan Li, Longbao Li, Fangdong He, Yaxian Wu, Jianqiang Wei, Chaoling eng 2019/03/28 J Agric Food Chem. 2019 May 15; 67(19):5465-5476. doi: 10.1021/acs.jafc.9b00195. Epub 2019 Apr 4"