MINI REVIEW article
Front. Plant Sci.
Sec. Plant Cell Biology
This article is part of the Research TopicENPER2024 - Three Decades of Endomembrane ResearchView all 3 articles
Salicylic acid: new pathways arising?
Provisionally accepted
Jonas Müller1
David Scheuring1,2*- 1Rheinland-Pfalzische Technische Universitat Kaiserslautern-Landau, Kaiserslautern, Germany
- 2University of Kaiserslautern, Kaiserslautern, Germany
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While the role of salicylic acid (SA) for plant immunity has been investigated for decades, its function in regulating plant growth and development has only come into focus recently. Several studies indicate that SA – auxin crosstalk plays an important role in mediating SA-induced effects. However, not all findings can be explained by this crosstalk alone and SA-specific effects on intracellular organization have been reported such as inhibition of endocytosis and changes of vacuolar pH and morphology. Notably, several SA-related functions seem to be independent of the SA receptors Nonexpressor of Pathogenesis-Related genes (NPRs). This review summarizes the effects of SA on intracellular organization and predicts the existence of as yet unknown signaling pathways to explain the current findings. We provide a short general introduction including SA biosynthesis and SA signaling and address how NPR-independent intracellular changes necessitate specific signaling to regulate growth and development.
Keywords: salicylic acid, vacuole, auxin, NPR (nonexpressor of PR genes), receptor, signaling
Received: 07 Aug 2025; Accepted: 24 Oct 2025.
Copyright: © 2025 Müller and Scheuring. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: David Scheuring, scheurin@rhrk.uni-kl.de
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