Global Switches and Fine-Tuning—ABA Modulates Plant Pathogen Defense

Plants are obliged to defend themselves against a wide range of biotic and abiotic stresses. Complex regulatory signaling networks mount an appropriate defense response depending on the type of stress that is perceived. In response to abiotic stresses such as drought, cold, and salinity, the functio...

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Main Authors: Bob Asselbergh, David De Vleesschauwer, Monica Höfte
Format: Article
Language:English
Published: The American Phytopathological Society 2008-06-01
Series:Molecular Plant-Microbe Interactions
Subjects:
Online Access:https://apsjournals.apsnet.org/doi/10.1094/MPMI-21-6-0709
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author Bob Asselbergh
David De Vleesschauwer
Monica Höfte
author_facet Bob Asselbergh
David De Vleesschauwer
Monica Höfte
author_sort Bob Asselbergh
collection DOAJ
description Plants are obliged to defend themselves against a wide range of biotic and abiotic stresses. Complex regulatory signaling networks mount an appropriate defense response depending on the type of stress that is perceived. In response to abiotic stresses such as drought, cold, and salinity, the function of abscisic acid (ABA) is well documented: elevation of plant ABA levels and activation of ABA-responsive signaling result in regulation of stomatal aperture and expression of stress-responsive genes. In response to pathogens, the role of ABA is more obscure and is a research topic that has long been overlooked. This article aims to evaluate and review the reported modes of ABA action on pathogen defense and highlight recent advances in deciphering the complex role of ABA in plant–pathogen interactions. The proposed mechanisms responsible for positive or negative effects of ABA on pathogen defense are discussed, as well as the regulation of ABA signaling and in planta ABA concentrations by beneficial and pathogenic microorganisms. In addition, the fast-growing number of reports that characterize antagonistic and synergistic interactions between abiotic and biotic stress responses point to ABA as an essential component in integrating and fine-tuning abiotic and biotic stress-response signaling networks.
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spelling doaj.art-7a601eb8354444be8037dbe61eb6541d2022-12-22T03:20:08ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062008-06-0121670971910.1094/MPMI-21-6-0709Global Switches and Fine-Tuning—ABA Modulates Plant Pathogen DefenseBob AsselberghDavid De VleesschauwerMonica HöftePlants are obliged to defend themselves against a wide range of biotic and abiotic stresses. Complex regulatory signaling networks mount an appropriate defense response depending on the type of stress that is perceived. In response to abiotic stresses such as drought, cold, and salinity, the function of abscisic acid (ABA) is well documented: elevation of plant ABA levels and activation of ABA-responsive signaling result in regulation of stomatal aperture and expression of stress-responsive genes. In response to pathogens, the role of ABA is more obscure and is a research topic that has long been overlooked. This article aims to evaluate and review the reported modes of ABA action on pathogen defense and highlight recent advances in deciphering the complex role of ABA in plant–pathogen interactions. The proposed mechanisms responsible for positive or negative effects of ABA on pathogen defense are discussed, as well as the regulation of ABA signaling and in planta ABA concentrations by beneficial and pathogenic microorganisms. In addition, the fast-growing number of reports that characterize antagonistic and synergistic interactions between abiotic and biotic stress responses point to ABA as an essential component in integrating and fine-tuning abiotic and biotic stress-response signaling networks.https://apsjournals.apsnet.org/doi/10.1094/MPMI-21-6-0709calloseethylenesalicylic acid
spellingShingle Bob Asselbergh
David De Vleesschauwer
Monica Höfte
Global Switches and Fine-Tuning—ABA Modulates Plant Pathogen Defense
Molecular Plant-Microbe Interactions
callose
ethylene
salicylic acid
title Global Switches and Fine-Tuning—ABA Modulates Plant Pathogen Defense
title_full Global Switches and Fine-Tuning—ABA Modulates Plant Pathogen Defense
title_fullStr Global Switches and Fine-Tuning—ABA Modulates Plant Pathogen Defense
title_full_unstemmed Global Switches and Fine-Tuning—ABA Modulates Plant Pathogen Defense
title_short Global Switches and Fine-Tuning—ABA Modulates Plant Pathogen Defense
title_sort global switches and fine tuning aba modulates plant pathogen defense
topic callose
ethylene
salicylic acid
url https://apsjournals.apsnet.org/doi/10.1094/MPMI-21-6-0709
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