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Plants 2017, 6(2), 15; doi:10.3390/plants6020015

Lipid Raft, Regulator of Plasmodesmal Callose Homeostasis

Division of Applied Life Science (BK21 Plus program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Korea
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Academic Editor: Milan Stankovic
Received: 29 December 2016 / Revised: 27 March 2017 / Accepted: 28 March 2017 / Published: 3 April 2017
(This article belongs to the Special Issue Plasmodesmata and Intercellular Movement)
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Abstract

Abstract: The specialized plasma membrane microdomains known as lipid rafts are enriched by sterols and sphingolipids. Lipid rafts facilitate cellular signal transduction by controlling the assembly of signaling molecules and membrane protein trafficking. Another specialized compartment of plant cells, the plasmodesmata (PD), which regulates the symplasmic intercellular movement of certain molecules between adjacent cells, also contains a phospholipid bilayer membrane. The dynamic permeability of plasmodesmata (PDs) is highly controlled by plasmodesmata callose (PDC), which is synthesized by callose synthases (CalS) and degraded by β-1,3-glucanases (BGs). In recent studies, remarkable observations regarding the correlation between lipid raft formation and symplasmic intracellular trafficking have been reported, and the PDC has been suggested to be the regulator of the size exclusion limit of PDs. It has been suggested that the alteration of lipid raft substances impairs PDC homeostasis, subsequently affecting PD functions. In this review, we discuss the substantial role of membrane lipid rafts in PDC homeostasis and provide avenues for understanding the fundamental behavior of the lipid raft–processed PDC. View Full-Text
Keywords: lipid raft; sterol; sphingolipid; plasmodesmata; plasmodesmata callose lipid raft; sterol; sphingolipid; plasmodesmata; plasmodesmata callose
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MDPI and ACS Style

Iswanto, A.B.B.; Kim, J.-Y. Lipid Raft, Regulator of Plasmodesmal Callose Homeostasis. Plants 2017, 6, 15.

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