2018
DOI: 10.1111/tpj.14101
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Disruption of glycosylphosphatidylinositol‐anchored lipid transfer protein 15 affects seed coat permeability in Arabidopsis

Abstract: The hydrophobic biopolymer suberin, which is deposited in the root endodermis and seed coats, functions as an extracellular barrier against uncontrolled water, gas, and ion loss. Suberin monomers synthesized in the endoplasmic reticulum (ER) are exported through the plasma membrane to the apoplast. However, limited information is available about the molecular mechanisms underlying suberin monomer export and assembly. In this study, we investigated the in planta role of LTPG15 encoding a glycosylphosphatidylino… Show more

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Cited by 37 publications
(27 citation statements)
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References 51 publications
(101 reference statements)
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“…Particularly, the half-transporter ABCG11 is shared by them ( Panikashvili et al, 2010 ). Recently, LTPG15, a PM glycosylphosphatidylinositol (GPI)-anchored lipid transfer protein, was identified to participate in suberin monomer export in seed coat ( Lee and Suh, 2018 ). Like transport means, both polymerization mechanism and polymer architecture remain largely elusive.…”
Section: Multiple Roles Of C18 Unsaturated Fatty Acids In Stress Defementioning
confidence: 99%
“…Particularly, the half-transporter ABCG11 is shared by them ( Panikashvili et al, 2010 ). Recently, LTPG15, a PM glycosylphosphatidylinositol (GPI)-anchored lipid transfer protein, was identified to participate in suberin monomer export in seed coat ( Lee and Suh, 2018 ). Like transport means, both polymerization mechanism and polymer architecture remain largely elusive.…”
Section: Multiple Roles Of C18 Unsaturated Fatty Acids In Stress Defementioning
confidence: 99%
“…Suberin monomers are synthesized enzymatically from precursors derived mainly from fatty acid and phenylpropanoid biosynthesis (Beisson et al ., 2007; Höfer et al ., 2008; Compagnon et al ., 2009; Franke et al ., 2009; Gou et al ., 2009; Lee et al ., 2009; Domergue et al ., 2010). For formation of suberin lamellae, newly synthesized suberin monomers are transported to the apoplast by a number of ATP‐BINDING CASSETTE G transporters as well as GLYCOSYLPHOSPHATIDYLINOSITOL‐ANCHORED LIPID TRANSFER PROTEIN (LTPG15) (Hofmann, 2014; Shiono et al ., 2014; Yadav et al ., 2014; Fedi et al ., 2017; Lee and Suh, 2018). Intriguingly, suberin deposition in the endodermis of Arabidopsis roots has been shown to be highly responsive to various environmental conditions (Barberon et al ., 2016).…”
Section: Introductionmentioning
confidence: 99%
“…The cell wall category includes eight groups comprised of genes that participate in aspects of cell wall modification and structure. Among these, is glycosylphosphatidylinositol‐anchored lipid transfer protein 15, which is mainly expressed in the root epidermis and seed coat and participates in suberin deposition on cell walls of the root epidermis (Lee and Suh, 2018); eight dirigent‐like genes ( DIR5 – DIR7 , DIR11 – DIR14 and DIR24 ) that may be involved in lignan and lignin biosynthesis as well as in modulating cell wall metabolism in response to stress (Paniagua et al ., 2017); and two expansin genes ( EXPA7 and EXPA18 ) involved in cell wall modification that are expressed during lateral root development and in root hairs, respectively (Lin et al ., 2011a). Others include six HXXXD‐type acyltransferase genes, such as FACT , which is expressed in the endodermis of young roots and may have a function in suberin biosynthesis, and BIA1 and BAT1 , which are highly expressed in roots and involved in brassinosteroid homeostasis (Kosma et al ., 2012; Roh et al ., 2012; Choi et al ., 2013; Zhang and Xu, 2018); five proline‐rich extensin‐like proteins ( EXT7 , EX13 , EX15 , EX21 and EXT22 ), which may participate in cell wall assembly (Saha et al ., 2013); four DUF642 genes ( DGR1 , AT2G41800 , AT5G14150 and AT2G41810 ) that may be involved in the regulation of cell wall events during growth ( DGR1 expression has been detected in the primary root; Cruz‐Valderrama et al ., 2019); and two targeting protein for Xklp2 genes, of which one ( WVD2‐1 ) has been characterized and participates in organ expansion and root waving (Yuen et al ., 2003).…”
Section: Resultsmentioning
confidence: 99%