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Sphingolipids at Plasmodesmata: Structural Components and Functional Modulators

文献类型： 外文期刊

作者： Zhang, Yingying 1 ; Wang, Shuang 2 ; Wang, Lu 2 ; Chang, Xiaoyan 2 ; Fan, Yongxiao 2 ; He, Meiqing 2 ; Yan, Dawei 2 ;

作者机构： 1.Shanghai Acad Agr Sci, Protected Hort Inst, Shanghai Key Lab Protected Hort Technol, Shanghai 201403, Peoples R China

2.Henan Univ, Sch Life Sci, State Key Lab Crop Stress Adaptat & Improvement, Kaifeng 475001, Peoples R China

关键词： sphingolipid; plasmodesmata; lipidomics; microdomain; plasma membrane; signaling

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 10 期

页码：

收录情况： SCI

摘要： Plasmodesmata (PD) are plant-specific channels connecting adjacent cells to mediate intercellular communication of molecules essential for plant development and defense. The typical PD are organized by the close apposition of the plasma membrane (PM), the desmotubule derived from the endoplasmic reticulum (ER), and spoke-like elements linking the two membranes. The plasmodesmal PM (PD-PM) is characterized by the formation of unique microdomains enriched with sphingolipids, sterols, and specific proteins, identified by lipidomics and proteomics. These components modulate PD to adapt to the dynamic changes of developmental processes and environmental stimuli. In this review, we focus on highlighting the functions of sphingolipid species in plasmodesmata, including membrane microdomain organization, architecture transformation, callose deposition and permeability control, and signaling regulation. We also briefly discuss the difference between sphingolipids and sterols, and we propose potential unresolved questions that are of help for further understanding the correspondence between plasmodesmal structure and function.

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