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POWERDRESS positively regulates systemic acquired resistance in Arabidopsis
Plant Cell Reports, 2022PWR, an epigenetic regulator, and PIF4, a transcription factor coordinately regulate both local resistance and systemic acquired resistance in Arabidopsis. A plant that gets infected once becomes resistant to subsequent infections through the development of systemic acquired resistance (SAR). Primary-infected tissues generate mobile signals that travel
Vishal Patil, Ashis Kumar Nandi
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Signaling by small metabolites in systemic acquired resistance
The Plant Journal, 2014SummaryPlants can retain the memory of a prior encounter with a pest. This memory confers upon a plant the ability to subsequently activate defenses more robustly when challenged by a pest. In plants that have retained the memory of a prior, localized, foliar infection by a pathogen, the pathogen‐free distal organs develop immunity against subsequent ...
Jyoti, Shah +4 more
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Systemic Acquired Resistance Signal Transduction
Critical Reviews in Plant Sciences, 1996Abstract Systemic acquired resistance (SAR) is an inducible plant defense response in which a prior foliar pathogen infection activates resistance in noninfected foliar tissues. Salicylic acid (SA) accumulation is essential for the establishment of SAR.
M. D. Hunt, J. A. Ryals
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Systemic Acquired Resistance and Induced Systemic Resistance in Conventional Agriculture
Crop Science, 2004Plants possess a range of defenses that can be actively expressed in response to pathogens and parasites of various scales, ranging from microscopic viruses to insect herbivores. The timing of these defense responses is critical and can be the difference between being able to cope or succumbing to the challenge of a pathogen or parasite.
Gary E. Vallad, Robert M. Goodman
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Systemic Acquired Resistance in Plants
1996The defense of plants against infectious microorganisms involves constitutive barriers as well as reactions induced upon contact with potential pathogens. Systemic acquired resistance (SAR) is characterized by an activation of a broad spectrum of host defense mechanisms, locally at the site of the initial pathogen attack as well as systemically, in ...
M. Schneider +3 more
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Systemic Acquired Resistance (SAR)
1998Nicotiana species and cultivars possessing the dominant N gene, e.g. Nicotiana glutinosa, N. tabacum “Samsun NN” and N. tabacum “Xanthi nc”, produce necrotic local lesions upon inoculation with the type strain of tobacco mosaic Tobamovirus (TMV).
Jeanne Dijkstra, Cees P. de Jager
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SOS – too many signals for systemic acquired resistance?
Trends in Plant Science, 2012Following pathogen infection, activation of systemic acquired resistance (SAR) in uninfected tissues requires transmission of a signal(s) from the infected tissue via the vasculature. Several candidates for this long-distance signal have been identified, including methyl salicylate (MeSA), an SFD1/GLY1-derived glycerol-3-phosphate (G3P)-dependent ...
D'Maris Amick, Dempsey +1 more
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Requirement of Salicylic Acid for the Induction of Systemic Acquired Resistance
Science, 1993It has been proposed that salicylic acid acts as an endogenous signal responsible for inducing systemic acquired resistance in plants. The contribution of salicylic acid to systemic acquired resistance was investigated in transgenic tobacco plants harboring a bacterial gene encoding salicylate hydroxylase, which converts salicylic acid to catechol ...
T, Gaffney +8 more
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The transcriptome of Arabidopsis thaliana during systemic acquired resistance
Nature Genetics, 2000Infected plants undergo transcriptional reprogramming during initiation of both local defence and systemic acquired resistance (SAR). We monitored gene-expression changes in Arabidopsis thaliana under 14 different SAR-inducing or SAR-repressing conditions using a DNA microarray representing approximately 25-30% of all A. thaliana genes.
K, Maleck +7 more
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The Molecular Biology of Systemic Acquired Resistance
1993Depletion of in planta salicylic acid in transgenic salicylate hydroxylase (NahG)containing plants, has shown that this phenolic compound is essential for expression of several modes of plant disease resistance. These include i) the rapid defense response found in some cases of genetically determined resistance, ii) the manifestation of disease ...
K. Lawton +11 more
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