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Curr Biol

Title:		Systemic Root-Shoot Signaling Drives Jasmonate-Based Root Defense against Nematodes
Author(s):		Wang G; Hu C; Zhou J; Liu Y; Cai J; Pan C; Wang Y; Wu X; Shi K; Xia X; Zhou Y; Foyer CH; Yu J;
Address:		"College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China. College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China; Key Laboratory of Horticultural Plant Growth and Development, Agricultural Ministry of China, 866 Yuhangtang Road, Hangzhou 310058, PR China. College of Agriculture, Hainan University, Sanya 570228, PR China. Analysis Center of Agrobiology and Environmental Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, PR China. College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China. Electronic address: yanhongzhou@zju.edu.cn. School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston B15 2TT, UK. Electronic address: c.h.foyer@bham.ac.uk. College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China. Electronic address: jqyu@zju.edu.cn"
Journal Title:		Curr Biol
Year:		2019
Volume:		20191003
Issue:		20
Page Number:		3430 - 3438
DOI:		10.1016/j.cub.2019.08.049
ISSN/ISBN:		1879-0445 (Electronic) 0960-9822 (Linking)
Abstract:		"Shoot-root communication is crucial for plant adaptation to environmental changes. However, the extensive crosstalk between shoots and roots that controls the synthesis of jasmonates (JAs), in order to enhance defense responses against rhizosphere herbivores, remains poorly understood. Here, we report that the root-knot nematode (RKN) Meloidogyne incognita induces the systemic transmission of electrical and reactive oxygen species (ROS) signals from attacked tomato roots to the leaves, leading to an increased accumulation of JAs in the leaves. Grafting of 1.0-cm stem sections from mutants lacking GLUTAMATE RECEPTOR-LIKE 3.5 or the mutants deficient in RESPIRATORY BURST OXIDASE HOMOLOG 1 abolished the RKN-induced electrical signals and associated ROS and JA accumulation in the upper stems and leaves with attenuated resistance to RKN. Furthermore, the absence of systemic transmission of electrical and ROS signals compromised the activation of mitogen-activated protein kinases (MPKs) 1/2 in leaves. Silencing MPK1 or MPK2 abolished RKN-induced accumulation of JAs and associated resistance. These findings reveal a systemic signaling loop that integrates electrical, ROS, and JA signals to enhance the resistance in distal organs via root-shoot-root communication"
Keywords:		Animals Cyclopentanes/*metabolism Solanum lycopersicum/parasitology/*physiology Oxylipins/*metabolism Plant Diseases/parasitology Plant Growth Regulators/*metabolism Plant Roots/*physiology Plant Shoots/*physiology *Signal Transduction Tylenchoidea/*physi;
Notes:		"MedlineWang, Guoting Hu, Chaoyi Zhou, Jie Liu, Ya Cai, Jiaxing Pan, Caizhe Wang, Yu Wu, Xiaodan Shi, Kai Xia, Xiaojian Zhou, Yanhong Foyer, Christine H Yu, Jingquan eng Research Support, Non-U.S. Gov't England 2019/10/08 Curr Biol. 2019 Oct 21; 29(20):3430-3438.e4. doi: 10.1016/j.cub.2019.08.049. Epub 2019 Oct 3"