Spermine Differentially Refines Plant Defense Responses Against Biotic and Abiotic Stresses

Frontiers in Plant Science
Hamed Soren Seifi, Barry J Shelp

Abstract

Roles of the major polyamines (mPA), putrescine, spermidine, and spermine (Spm), in various developmental and physiological processes in plants have been well documented. Recently, there has been increasing focus on the link between mPA metabolism and defense response during plant-stress interactions. Empirical evidence is available for a unique role of Spm, distinct from the other mPA, in eliciting an effective defense response to (a)biotic stresses. Our understanding of the precise molecular mechanism(s) by which Spm modulates these defense mechanisms is limited. Further analysis of recent studies indicates that plant Spm functions differently during biotic and abiotic interactions in the regulation of oxidative homeostasis and phytohormone signaling. Here, we summarize and integrate current knowledge about Spm-mediated modulation of plant defense responses to (a)biotic stresses, highlighting the importance of Spm as a potent plant defense activator with broad-spectrum protective effects. A model is proposed to explain how Spm refines defense mechanisms to tailor an optimal resistance response.

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Citations

Jul 25, 2019·Frontiers in Plant Science·Ana Margarida FortesNoam Alkan
Jan 31, 2020·Plant, Cell & Environment·Łukasz P TarkowskiMonica Höfte
Sep 19, 2019·Plant Signaling & Behavior·Aditi TailorSatish C Bhatla
Oct 15, 2019·Frontiers in Plant Science·Savithri U NambeesanAvtar K Handa
May 27, 2020·Nature Ecology & Evolution·Laura J KellyRichard J A Buggs
Aug 26, 2020·Plant, Cell & Environment·Changxin LiuRubén Alcázar
Dec 1, 2020·Frontiers in Plant Science·Miroslav BerkaMartin Černý
Oct 11, 2020·Trends in Plant Science·Dylan R ZeissIan A Dubery
Jan 7, 2020·Plant Physiology and Biochemistry : PPB·Prabhjot SinglaSatvir K Grewal
Feb 11, 2021·Biomolecules·Henry Christopher Janse van RensburgWim Van den Ende
Apr 14, 2021·Scientific Reports·Janice KofskyBao-Hua Song
Mar 21, 2020·Ecotoxicology and Environmental Safety·Sarah C R SouzaSara A L de Andrade
Jun 29, 2021·PeerJ·Sabina Velázquez-MárquezJuan Núñez-Farfán
Jun 16, 2021·Trends in Plant Science·Léo GerlinStéphane Genin
Nov 19, 2021·Plant Physiology·Anish KunduJyothilakshmi Vadassery

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