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Priming: Getting Ready for Battle

October 2006 , Volume 19 , Number  10
Pages  1,062 - 1,071

Prime-A-Plant Group : Uwe Conrath , 1 Gerold J. M. Beckers , 1 Victor Flors , 2 Pilar García-Agustín , 2 Gábor Jakab , 3 Felix Mauch , 4 Mari-Anne Newman , 5 Corné M. J. Pieterse , 6 Benoit Poinssot , 7 María J. Pozo , 8 Alain Pugin , 7 Ulrich Schaffrath , 1 Jurriaan Ton , 6 David Wendehenne , 7 Laurent Zimmerli , 9 and Brigitte Mauch-Mani 9

1Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany; 2área de Fisiología Vegetal, Departamento de Ciencias Experimentales, ESTCE, Universitat Jaume I, Campus Riu Sec, 12071 Castellón, Spain; 3Institute of Biology, Faculty of Sciences, University of Pécs, H 7601 Pécs Pf.: 266. Pécs, Hungary; 4Department of Biology-Plant Biology, University of Fribourg, 3 Rue Albert Gockel, Fribourg, CH-1700, Switzerland; 5Section for Plant Pathology, Royal Veterinary and Agricultural University (KVL), Thorvaldsensvej 40, 1871 Frederiksberg, Denmark; 6Section of Phytopathology, Institute of Environmental Biology, Faculty of Science, Utrecht University, PO Box 800.84, 3508 TB Utrecht, The Netherlands; 7UMR Plante-Microbe-Environnement INRA 1088/CNRS 5184/ Université de Bourgogne, 17 rue Sully, BP 86510, 21065 Dijon Cédex, France; 8Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, CSIC, Profesor Albareda 1, 18008 Granada, Spain; and 9Institute of Botany, University of Neuchâtel, Rue Emile Argand 11, PO Box 158, CH-2009 Neuchâtel, Switzerland

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Accepted 12 June 2006.

Infection of plants by necrotizing pathogens or colonization of plant roots with certain beneficial microbes causes the induction of a unique physiological state called “ priming”. The primed state can also be induced by treatment of plants with various natural and synthetic compounds. Primed plants display either faster, stronger, or both activation of the various cellular defense responses that are induced following attack by either pathogens or insects or in response to abiotic stress. Although the phenomenon has been known for decades, most progress in our understanding of priming has been made over the past few years. Here, we summarize the current knowledge of priming in various induced-resistance phenomena in plants.

Additional keywords: β-aminobutyric acid , bacterial lipopolysaccharides , ethylene , jasmonic acid , mycorrhizal fungi , salicylic acid .

© 2006 The American Phytopathological Society