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Early Events in the Activation of Plant Defense Responses

Early Events in the Activation of Plant Defense Responses Resistance in many plant-pathogen interactions is accompanied by the rapid deployment of a multicomponent defense response. The individual compo­ nents of this include the hypersensitive response (HR)!, chemical weapons such as antimicrobial phytoalexins and hydrolytic enzymes, and structural defensive barriers such as lignin and hydroxyproline-rich cell wall proteins. Signals for activation of these various defenses are thought to be initiated in response to recognition of pathogen avirulence determinants (elicitors) by plant receptors. The defense response may be induced specifically (deter­ mined by the avirulent genotype of the pathogen race and the resistant genotype of the host cultivar) or nonspecifically by a range of biotic and lAcronyrns: HR hypersensitive response; PAL = = = L- phenylalanine ammonia-lyase; ROI = = reactive oxygen intermediates; PRP 4-phosphate; PIP2 proline-rich protein; CHS chalcone synthase; GSH = reduced glutathione; 6MM = 6-methoxymellein; OAG = diacylglycerol; PIP = phosphatidylinositol = phosphatidylinositol 4,5-bisphosphate; IP3 = = = inositol trisphosphate; GTP = guanosine triphosphate; GOP guanosine diphosphate; Fab = antibody-binding fragment of immunoglobulin; IFN = interferon; IKB inhibitor of nuclear factor kappa beta (NF-lCB); SAR = systemic acquired resistance; GUS = fJ-glucuronidase 0066-4286194/0901-0479$05.00 DIXON, HARRISON & LAMB abiotic elicitors; in either case, it would appear that http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Phytopathology Annual Reviews

Early Events in the Activation of Plant Defense Responses

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References (54)

Publisher
Annual Reviews
Copyright
Copyright 1994 Annual Reviews. All rights reserved
Subject
Review Articles
ISSN
0066-4286
eISSN
1545-2107
DOI
10.1146/annurev.py.32.090194.002403
Publisher site
See Article on Publisher Site

Abstract

Resistance in many plant-pathogen interactions is accompanied by the rapid deployment of a multicomponent defense response. The individual compo­ nents of this include the hypersensitive response (HR)!, chemical weapons such as antimicrobial phytoalexins and hydrolytic enzymes, and structural defensive barriers such as lignin and hydroxyproline-rich cell wall proteins. Signals for activation of these various defenses are thought to be initiated in response to recognition of pathogen avirulence determinants (elicitors) by plant receptors. The defense response may be induced specifically (deter­ mined by the avirulent genotype of the pathogen race and the resistant genotype of the host cultivar) or nonspecifically by a range of biotic and lAcronyrns: HR hypersensitive response; PAL = = = L- phenylalanine ammonia-lyase; ROI = = reactive oxygen intermediates; PRP 4-phosphate; PIP2 proline-rich protein; CHS chalcone synthase; GSH = reduced glutathione; 6MM = 6-methoxymellein; OAG = diacylglycerol; PIP = phosphatidylinositol = phosphatidylinositol 4,5-bisphosphate; IP3 = = = inositol trisphosphate; GTP = guanosine triphosphate; GOP guanosine diphosphate; Fab = antibody-binding fragment of immunoglobulin; IFN = interferon; IKB inhibitor of nuclear factor kappa beta (NF-lCB); SAR = systemic acquired resistance; GUS = fJ-glucuronidase 0066-4286194/0901-0479$05.00 DIXON, HARRISON & LAMB abiotic elicitors; in either case, it would appear that

Journal

Annual Review of PhytopathologyAnnual Reviews

Published: Sep 1, 1994

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