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J Exp Bot

Title:		Herbivory-induced systemic signals are likely to be evolutionarily conserved in euphyllophytes
Author(s):		Lei Y; Xu Y; Zhang J; Song J; Wu J;
Address:		"Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China. CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China"
Journal Title:		J Exp Bot
Year:		2021
Volume:		72
Issue:		20
Page Number:		7274 - 7284
DOI:		10.1093/jxb/erab349
ISSN/ISBN:		1460-2431 (Electronic) 0022-0957 (Print) 0022-0957 (Linking)
Abstract:		"Herbivory-induced systemic signaling has been demonstrated in monocots and dicots, and is essential for plant defense against insects. However, the nature and evolution of herbivory-induced systemic signals remain unclear. Grafting is widely used for studying systemic signaling; however, grafting between dicot plants from different families is difficult, and grafting is impossible for monocots. In this study, we took advantage of dodder's extraordinary capability of parasitizing various plant species. Field dodder (Cuscuta campestris) was employed to connect pairs of species that are phylogenetically very distant, ranging from fern to monocot and dicot plants, and so determine whether interplant signaling occurs after simulated herbivory. It was found that simulated herbivory-induced systemic signals can be transferred by dodder between a monocot and a dicot plant and even between a fern and a dicot plant, and the plants that received the systemic signals all exhibited elevated defenses. Thus, we inferred that the herbivory-induced systemic signals are likely to be evolutionarily well conserved among vascular plants. Importantly, we also demonstrate that the jasmonate pathway is probably an ancient regulator of the biosynthesis and/or transport of systemic signals in vascular plants. These findings provide new insight into the nature and evolution of systemic signaling"
Keywords:		Animals *Cuscuta Cyclopentanes *Herbivory Insecta Oxylipins Plants Signal Transduction Dodder evolution herbivory jasmonic acid systemic signaling vascular plants;
Notes:		"MedlineLei, Yunting Xu, Yuxing Zhang, Jingxiong Song, Juan Wu, Jianqiang eng Research Support, Non-U.S. Gov't England 2021/07/23 J Exp Bot. 2021 Oct 26; 72(20):7274-7284. doi: 10.1093/jxb/erab349"