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Nat Commun

Title:		Conserved nematode signalling molecules elicit plant defenses and pathogen resistance
Author(s):		Manosalva P; Manohar M; von Reuss SH; Chen S; Koch A; Kaplan F; Choe A; Micikas RJ; Wang X; Kogel KH; Sternberg PW; Williamson VM; Schroeder FC; Klessig DF;
Address:		"Boyce Thompson Institute for Plant Research, Ithaca, New York 14853, USA. Department of Plant Pathology and Microbiology, University of California Riverside, Riverside, California 92521, USA. Department of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, New York 14853, USA. Research Centre for BioSystems, Land Use, and Nutrition, Justus Liebig University, Giessen D-35392, Germany. Kaplan Schiller Research, LLC, Gainesville, Florida 32604, USA. Howard Hughes Medical Institute and Biology Division, California Institute of Technology, Pasadena, California 91125, USA. Robert W. Holley Center for Agriculture and Health, US Department of Agricultural Research Service, Ithaca, New York 14853, USA. Department of Plant Pathology, University of California, Davis, California 95616, USA"
Journal Title:		Nat Commun
Year:		2015
Volume:		20150723
Issue:
Page Number:		7795 -
DOI:		10.1038/ncomms8795
ISSN/ISBN:		2041-1723 (Electronic) 2041-1723 (Linking)
Abstract:		"Plant-defense responses are triggered by perception of conserved microbe-associated molecular patterns (MAMPs), for example, flagellin or peptidoglycan. However, it remained unknown whether plants can detect conserved molecular patterns derived from plant-parasitic animals, including nematodes. Here we show that several genera of plant-parasitic nematodes produce small molecules called ascarosides, an evolutionarily conserved family of nematode pheromones. Picomolar to micromolar concentrations of ascr#18, the major ascaroside in plant-parasitic nematodes, induce hallmark defense responses including the expression of genes associated with MAMP-triggered immunity, activation of mitogen-activated protein kinases, as well as salicylic acid- and jasmonic acid-mediated defense signalling pathways. Ascr#18 perception increases resistance in Arabidopsis, tomato, potato and barley to viral, bacterial, oomycete, fungal and nematode infections. These results indicate that plants recognize ascarosides as a conserved molecular signature of nematodes. Using small-molecule signals such as ascarosides to activate plant immune responses has potential utility to improve economic and environmental sustainability of agriculture"
Keywords:		Animals Arabidopsis/*immunology/parasitology Cyclopentanes/metabolism *Host-Parasite Interactions Nematoda/*metabolism Oxylipins/metabolism Pheromones/*metabolism *Plant Immunity Pseudomonas syringae Salicylic Acid/metabolism Signal Transduction;
Notes:		"MedlineManosalva, Patricia Manohar, Murli von Reuss, Stephan H Chen, Shiyan Koch, Aline Kaplan, Fatma Choe, Andrea Micikas, Robert J Wang, Xiaohong Kogel, Karl-Heinz Sternberg, Paul W Williamson, Valerie M Schroeder, Frank C Klessig, Daniel F eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2015/07/24 Nat Commun. 2015 Jul 23; 6:7795. doi: 10.1038/ncomms8795"