Cited by 151Plant-Microbe Interactions and ImmunityInsect-Plant Interactions and ControlImmune Response and Inflammation

Signaling by small metabolites in systemic acquired resistance

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Shah, Jyoti, Chaturvedi, Ratnesh, Chowdhury, Zulkarnain, Venables, Barney, Petros, Robby A.·2014·The Plant Journal

Abstract

Summary: Plants 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 infections by a broad‐spectrum of pathogens. The long‐term immunity conferred by this mechanism, which is termed systemic acquired resistance (SAR), is inheritable over a few generations. Signaling mediated by the phenolic metabolite salicylic acid (SA) is critical for the manifestation of SAR. Recent studies have described the involvement of additional small metabolites in SAR signaling, including methyl salicylate, the abietane diterpenoid dehydroabietinal, the lysine catabolite pipecolic acid, a glycerol‐3‐phosphate‐dependent factor and the dicarboxylic acid azelaic acid. Many of these metabolites can be systemically transported through the plant and probably facilitate communication by the primary infected tissue with the distal tissues, which is essential for the activation of SAR. Some of these metabolites have been implicated in the SAR‐associated rapid activation of defenses in response to subsequent exposure to the pathogen, a mechanism termed priming. Here, we summarize the role of these signaling metabolites in SAR, and the relationship between them and SA signaling in SAR.

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Authors
Shah, J., Chaturvedi, R., Chowdhury, Z., Venables, B., & Petros, R. A.
Affiliations
University of North Texas (US)
Corresponding author
Shah, Jyoti
Venue
The Plant Journal
Publisher
Wiley
Published
2014-05-16
Volume
79
Issue
4
Pages
645-658
ISSN
  • 0960-7412 (ISSN-L)
  • 1365-313X
OpenAlex
W2111240299
Cited by
151
References
100
Citations by year
2026: 5 · 2025: 9 · 2024: 8 · 2023: 7 · 2022: 8 · 2021: 10 · 2020: 20 · 2019: 13 · 2018: 13 · 2017: 18 · 2016: 24 · 2015: 8 · 2014: 8
FWCI
2.19
Type
journal article
Language
en
Open access
Locations
  • The Plant Journal (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation (IOS-1121570)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
systemic acquired resistance, plant defense signaling, salicylic acid, methyl salicylate, pipecolic acid, azelaic acid, glycerol-3-phosphate, defense priming, small metabolites
MeSH terms
Cell Communication, Plants, Salicylic Acid, Plant Immunity

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