MINI REVIEW article
Front. Plant Sci.
Sec. Plant Abiotic Stress
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1624136
This article is part of the Research TopicAdvances in the Plant-Soil Interaction Under Saline ConditionView all articles
Suberin in Plants: Biosynthesis, Regulation, and Its Role in Salt Stress Resistance
Provisionally accepted
- Qilu University of Technology, Jinan, China
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Soil salinization represents a significant global ecological challenge. Plants encounter salt stress in their growth environments. Suberin, a hydrophobic polymer, plays a critical role in plant salt tolerance. This review examines the mechanisms by which suberin contributes to salt tolerance. Suberin comprises polyaliphatic and polyphenolic domains. Its biosynthesis involves multiple enzymes, including fatty acid synthases, the fatty acid elongation complex, and various cytochrome P450 monooxygenases. ABCG transporters and lipid transfer proteins facilitate the transport of suberin monomers from the endoplasmic reticulum to the plasma membrane and cell wall. Plants utilize suberin lamellae to respond to salt stress through multiple mechanisms. Under salt stress, the structure and composition of suberin lamellae undergo modifications, including increased thickness and enhanced very-long-chain fatty acid components. In addition, salt stress elevates the expression of genes associated with suberin biosynthesis and transport. Mutations in these genes often result in saltsensitive phenotypes. Fundamentally, suberin contributes to forming the hydrophobic component of the apoplastic barrier, thereby reducing passive Na⁺ influx and restricting sodium uptake to protect plants from ion toxicity. Understanding the mechanisms of suberin in salt tolerance offers potential strategies for enhancing crop salt tolerance through genetic engineering.
Keywords: suberin, salt stress, salt resistance, biosynthesis, Transportation, Salt exclusion
Received: 07 May 2025; Accepted: 16 Jun 2025.
Copyright: © 2025 Wang, Chen, Liu, Yang, Gong, Zhou, Han and Yang. 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:
Ning Han, Qilu University of Technology, Jinan, China
Zhen Yang, Qilu University of Technology, Jinan, China
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