Priming: getting ready for battle.
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.
Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany.
Conrath
Uwe
U
Beckers
Gerold J M
GJ
Flors
Victor
V
García-Agustín
Pilar
P
Jakab
Gábor
G
Mauch
Felix
F
Newman
Mari-Anne
MA
Pieterse
Corné M J
CM
Poinssot
Benoit
B
Pozo
María J
MJ
Pugin
Alain
A
Schaffrath
Ulrich
U
Ton
Jurriaan
J
Wendehenne
David
D
Zimmerli
Laurent
L
Mauch-Mani
Brigitte
B
D000613:Aminobutyrates / Q000494:pharmacology; D000818:Animals; D005030:Ethylenes / Q000494:pharmacology; D007113:Immunity, Innate / Q000502:physiology; D007313:Insecta / Q000502:physiology; D018521:Plant Physiological Phenomena; D010944:Plants / Q000187:drug effects / Q000378:metabolism / Q000382:microbiology*; D020156:Salicylic Acid / Q000494:pharmacology; D015398:Signal Transduction / Q000187:drug effects
D000613:Aminobutyrates; D005030:Ethylenes; C047667:3-aminobutyric acid; C036216:ethylene; D020156:Salicylic Acid