Summary
Sphingolipids are major structural components of endomembranes and dynamic regulators of basic cellular processes in plants. Advances during the past decade have revealed that sphingolipids are essential molecules in plants, and many of the genes for sphingolipid biosynthetic enzymes have been identified and characterized. In addition, improved methods for sphingolipid extraction and analysis have uncovered the immense structural complexity and quantitative importance of sphingolipids in plant cells. These advanced analytical methods have also been increasingly applied to the characterization of Arabidopsis thaliana mutants to provide unexpected insights into sphingolipid metabolism and function. Complementing these studies is a growing awareness that sphingolipids are one of the most abundant lipid components of the plasma membrane of plant cells and may play a role in the organization and function of membrane microdomains that are important for cell surface activities and for trafficking of proteins to the plasma membrane. Furthermore, sphingolipid metabolites including free and phosphorylated forms of long-chain bases and ceramides have been linked as bioactive regulators to a number of cellular processes (e.g., programmed cell death) that are important for abiotic stress resistance, plant development, and plant—pathogen interactions. This review provides a synopsis of the rapidly progressing field of plant sphingolipid biology and highlights gaps in our knowledge of the metabolism and function of these molecules in plants.
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Abbreviations
- ABA:
-
Abscisic acid
- acd:
-
Accelerated cell death
- ACP:
-
Acyl carrier protein
- AAL:
-
Alternaria alternata f. sp. lycopersici
- GBA:
-
Bile acid β-glucosidase
- DRM:
-
Detergent-resistant membranes
- ER:
-
Endoplas-mic reticulum
- FATB:
-
Fatty acid thioesterase B
- GlcCer:
-
Glucosylceramide
- GLTP:
-
Glycolipid transfer protein
- GIPC:
-
Glycosyl inositolphosphoceramide
- HR:
-
Hypersensitive response
- IPC:
-
Inositolphosphoceramide
- Ld :
-
Liquid-disordered phase
- Lo :
-
Liquid-ordered phase
- LCB:
-
Long-chain base
- LCB-P:
-
Long-chain base-1-phosphate
- Tm :
-
Melting temperature
- PR:
-
Pathogenesis-related
- PI:
-
Phosphatidylinositol
- RNAi:
-
RNA interference
- SPT:
-
Serine palmitoyltransferase
- d18:0:
-
Sphinganine (dihydro sphingosine)
- SPHK:
-
Sphingosine kinase
- VLCFA:
-
Very long-chain fatty acid
- t18:0:
-
4-Hydroxysphinganine (phytosphingosine)
- t18:1Δ8trans :
-
4-Hydroxy-Δ8trans-sphingenine
- t18:1Δ8cis :
-
4-Hydroxy-Δ8cis-sphingenine
- d18:1Δ4trans :
-
Δ4trans-sphingenine (sphingosine)
- d18: 1Δ8trans :
-
Δ8trans-sphingenine
- 18:1Δ8cis :
-
Δ8cis-sphin-genine
- d18:2Δ4trans,8cis :
-
Δ4trans,8cis-sphingadienine
- d18:2Δ4trans,8trans :
-
Δ4trans,8trans-sphingadienine
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Acknowledgments
We thank Rebecca Cahoon for editing of the text. We also thank the Consejo Nacional de Ciencia y Tecnología (CONACYT), México (grant 55610) and Universidad Nacional Autónoma de México (UNAM) (grants DGAPA PAPIIT-IN207806 and PAIP 0690-2) for financial support to MGR, CONACYT (grant 50503Z) for financial support to JP, and the United States National Science Foundation (MCB-0312559, MCB-0843312) for financial support to EBC. MSG is supported by a fellowship from Consejo Nacional de Ciencia y Tecnología (CONACYT), México.
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Chen, M., Cahoon, E.B., Saucedo-García, M., Plasencia, J., Gavilanes-Ruíz, M. (2009). Plant Sphingolipids: Structure, Synthesis and Function. In: Wada, H., Murata, N. (eds) Lipids in Photosynthesis. Advances in Photosynthesis and Respiration, vol 30. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-2863-1_5
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