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EMBO J

Title:		Rhizobacterium-derived diacetyl modulates plant immunity in a phosphate-dependent manner
Author(s):		Morcillo RJ; Singh SK; He D; An G; Vilchez JI; Tang K; Yuan F; Sun Y; Shao C; Zhang S; Yang Y; Liu X; Dang Y; Wang W; Gao J; Huang W; Lei M; Song CP; Zhu JK; Macho AP; Pare PW; Zhang H;
Address:		"Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China. University of Chinese Academy of Sciences, Beijing, China. Department of Horticulture & Landscape Architecture, Purdue University, West Lafayette, IN, USA. Shanghai Chenshan Botanical Garden, Shanghai, China. College of Grassland Agriculture, Northwest A&F University, Yangling, China. State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, China. Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, TX, USA"
Journal Title:		EMBO J
Year:		2020
Volume:		20191205
Issue:		2
Page Number:		e102602 -
DOI:		10.15252/embj.2019102602
ISSN/ISBN:		1460-2075 (Electronic) 0261-4189 (Print) 0261-4189 (Linking)
Abstract:		"Plants establish mutualistic associations with beneficial microbes while deploying the immune system to defend against pathogenic ones. Little is known about the interplay between mutualism and immunity and the mediator molecules enabling such crosstalk. Here, we show that plants respond differentially to a volatile bacterial compound through integral modulation of the immune system and the phosphate-starvation response (PSR) system, resulting in either mutualism or immunity. We found that exposure of Arabidopsis thaliana to a known plant growth-promoting rhizobacterium can unexpectedly have either beneficial or deleterious effects to plants. The beneficial-to-deleterious transition is dependent on availability of phosphate to the plants and is mediated by diacetyl, a bacterial volatile compound. Under phosphate-sufficient conditions, diacetyl partially suppresses plant production of reactive oxygen species (ROS) and enhances symbiont colonization without compromising disease resistance. Under phosphate-deficient conditions, diacetyl enhances phytohormone-mediated immunity and consequently causes plant hyper-sensitivity to phosphate deficiency. Therefore, diacetyl affects the type of relation between plant hosts and certain rhizobacteria in a way that depends on the plant's phosphate-starvation response system and phytohormone-mediated immunity"
Keywords:		Arabidopsis/drug effects/growth & development/*immunology/metabolism Bacteria/immunology/metabolism Diacetyl/*pharmacology Phosphates/*metabolism Plant Diseases/*immunology/microbiology Plant Immunity/drug effects/*immunology Plant Roots/drug effects/grow;
Notes:		"MedlineMorcillo, Rafael Jl Singh, Sunil K He, Danxia An, Guo Vilchez, Juan I Tang, Kai Yuan, Fengtong Sun, Yazhou Shao, Chuyang Zhang, Song Yang, Yu Liu, Xiaomin Dang, Yashan Wang, Wei Gao, Jinghui Huang, Weichang Lei, Mingguang Song, Chun-Peng Zhu, Jian-Kang Macho, Alberto P Pare, Pual W Zhang, Huiming eng Thousand Talents Program for Young Scientists, China/International Chinese Academy of Sciences (CAS)/International Research Support, Non-U.S. Gov't England 2019/12/06 EMBO J. 2020 Jan 15; 39(2):e102602. doi: 10.15252/embj.2019102602. Epub 2019 Dec 5"