exocytosis and cell polarity in plants exocyst and

Exocytosis and cell polarity in plants - exocyst and ...

In plants, exocytosis is a central mechanism of cell morphogenesis. We still know surprisingly little about some aspects of this process, starting with exocytotic vesicle formation, which may take place at the trans-Golgi network even without coat assistance, facilitated by

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Exocytosis and cell polarity in plants – exocyst and ...

Exocytosis and cell polarity in plants – exocyst and recycling domains. ... We have recently described the exocyst tethering complex in plant cells. As a result of the multiplicity of its putative Exo70 subunits, this complex may belong to core regulators of recycling domain organization, including the generation of multiple recycling domains ...

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Exocytosis and cell polarity in plants – exocyst and ...

May 28, 2009  Exocytosis and cell polarity in plants – exocyst and recycling domains. ... We have recently described the exocyst tethering complex in plant cells. As a result of the multiplicity of its putative Exo70 subunits, this complex may belong to core regulators of recycling domain organization, including the generation of multiple recycling domains ...

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Exocytosis and cell polarity in plants - exocyst and ...

In plants, exocytosis is a central mechanism of cell morphogenesis. We still know surprisingly little about some aspects of this process, starting with exocytotic vesicle formation, which may take place at the trans-Golgi network even without coat assistance, facilitated by the local regulation of membrane lipid organization. The RabA4b guanosine triphosphatase (GTPase), recruiting...

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Exocytosis and cell polarity in plants - exocyst and ...

May 28, 2009  Exocytosis and cell polarity in plants - exocyst and recycling domains. Viktor Žárský Department of Plant Physiology, Charles University, Viničná 5, 128 44 Praha 2, Czech Republic.

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Exocytosis and cell polarity in plants - exocyst and ...

Keywords: cell polarity, Exo70, exocyst, exocytosis, GTPases, membrane recycling, recycling domain, secretory pathway Abstract: In plants, exocytosis is a central mechanism of cell morphogenesis. We still know surprisingly little about some aspects of this process, starting with exocytotic vesicle formation, which may take place at the trans ...

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Exocyst complexes multiple functions in plant cells ...

Plant cells and tissues rely on targeted exocytosis and this implies that the exocyst is involved in regulation of cell polarity and morphogenesis, including cytokinesis, plasma membrane protein recycling (including PINs, the auxin efflux carriers), cell wall biogenesis, fertilization, stress and biotic interactions including defence against ...

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Exocytosis and cell polarity in plants - exocyst and ...

Keywords: cell polarity, Exo70, exocyst, exocytosis, GTPases, membrane recycling, recycling domain, secretory pathway Abstract: In plants, exocytosis is a central mechanism of cell morphogenesis. We still know surprisingly little about some aspects of this process, starting with exocytotic vesicle formation, which may take place at the trans ...

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Exocytosis and polarity in plant cells: insights by ...

Title: Exocytosis and polarity in plant cells: insights by studying cellulose synthase complexes and the exocyst: Author: Ying Zhang, Ying: Degree grantor

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Exocyst complexes multiple functions in plant cells ...

Dec 01, 2013  Plant cells and tissues rely on targeted exocytosis and this implies that the exocyst is involved in regulation of cell polarity and morphogenesis, including cytokinesis, plasma membrane protein recycling (including PINs, the auxin efflux carriers), cell wall biogenesis, fertilization, stress and biotic interactions including defence against ...

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The Plant Exocyst - Zhang - 2010 - Journal of Integrative ...

Feb 10, 2010  Exocytosis in Plants and the Plant Exocyst. Exocytosis is probably used in a more diverse set of processes in multi-cellular plants, relative to budding yeast. Similar to budding yeast, exocytosis in plants functions during cell growth and cell division. However, numerous other processes also require polarized exocytosis in plants.

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Evolution of late steps in exocytosis: conservation and ...

Nov 29, 2019  Zárský V, Cvrcková F, Potocký M, et al. : Exocytosis and cell polarity in plants - exocyst and recycling domains. New Phytol. 2009; 183 (2):255–72. 10.1111/j.1469-8137.2009.02880.x [Google Scholar] Zárský V, Kulich I, Fendrych M, et al. : Exocyst complexes multiple functions in plant cells secretory pathways.

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The exocyst complex in exocytosis and cell migration ...

Exocytosis is a fundamental membrane trafficking event in eukaryotic cells in which membrane proteins or lipids are incorporated into the plasma membrane and vesicle contents are secreted to the exterior of the cell. The exocyst, an evolutionarily conserved octameric protein complex, plays a crucial role in the targeting of secretory vesicles to the plasma membrane during exocytosis.

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Exocytosis and Endocytosis The Plant Cell Oxford Academic

A related question is whether plant cells with pronounced polarity of exocytosis, such as the hypersecretory cells of the maize root cap (Roy and Vian, 1991), seed coat cells of Plantago , or pollen tubes (Taylor and Hepler, 1997), achieve this polarity by using SNARE mechanisms, Ca 2+ gradients, cytoskeletal targeting, or a combination of all ...

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The Exocyst at a Glance Journal of Cell Science The ...

The exocyst is an octameric protein complex that is implicated in the tethering of secretory vesicles to the plasma membrane prior to SNARE-mediated fusion. Spatial and temporal control of exocytosis through the exocyst has a crucial role in a number of physiological processes, such as morphogenesis, cell cycle progression, primary ciliogenesis ...

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Exocytosis: The Many Masters of the Exocyst - Cell

Mar 19, 2002  This is true of exocytosis in eukaryotic cells, where the docking of exocytic vesicles with the plasma membrane has been shown to involve a protein complex colorfully known as the ‘exocyst’. The exocyst complex comprises eight proteins: Sec3p, Sec5p, Sec6p, Sec8p, Sec10p, Sec15p, Exo70p and

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A Distinct Pathway for Polar Exocytosis in Plant Cell Wall ...

Although it is not known exactly how many different types of UPS pathways exist in plant cells, studies of exocyst-positive organelle (EXPO)-mediated UPS indicate that multiple exocytosis pathways may possibly co-operate and compensate for the classical endoplasmic reticulum-Golgi-TGN-PM protein exocytosis pathway (Wang et al., 2010b).

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Endosidin2 targets conserved exocyst complex subunit EXO70 ...

Nov 25, 2015  Exocytosis and cell polarity in plants - exocyst and recycling domains: Tansley review journal, May 2009 Žárský, Viktor; Cvrčková, Fatima; Potocký, Martin New Phytologist, Vol. 183, Issue 2

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Endosidin2 targets conserved exocyst complex subunit EXO70 ...

Jan 05, 2016  The exocyst complex is a conserved protein complex that tethers the secretory vesicles to the site of membrane fusion during exocytosis, an essential cellular process that transports molecules, such as protein, to the cell surface or extracellular space. We identified a small molecule that targets the EXO70 (exocyst component of 70 kDa) subunit of the exocyst complex to inhibit exocytosis.

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Editorial Note on the Review Process

Polarity factors as well as Rho GTPases, septins, and a localized delivery of vesicles are the central elements described so far that participate in the shift from isotropic to polarized growth. The growth of the cell wall by apical biosynthesis and remodeling of polysaccharide components is a key

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Pathogens Free Full-Text From Jekyll to Hyde: The ...

The vesicles accumulate as Spitzenkörper in the subapical region before docking with the exocyst and polarisome components. This exocytosis process is counterbalanced by the endocytosis process. Cell morphology of C. albicans is known to be tightly linked to cell cycle progression through cyclin-CDK complexes. One of the most important CDK ...

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Lethal giant larvae proteins interact with the exocyst ...

Jul 18, 2005  We also found that overexpression of Lgl and t-SNARE proteins not only improves exocytosis but also rescues polarity defects in exocyst mutants. We propose that, although Lgl is broadly distributed in the cells, its localized interaction with the exocyst and kinetic activation are important for the establishment and reenforcement of cell polarity.

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Extra exocytosis rescues polarity Journal of Cell ...

Jul 18, 2005  When overexpressed, the Lgl proteins up-regulate exocytosis and rescue cell polarity in exocyst mutants. For now the researchers think that this spatial rescue occurs via a tuning system involving the secretion machinery and polarity regulators, which may be localized to the plasma membrane during exocytosis.

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Endosidin2 targets conserved exocyst complex subunit EXO70 ...

Nov 25, 2015  Exocytosis and cell polarity in plants - exocyst and recycling domains: Tansley review journal, May 2009 Žárský, Viktor; Cvrčková, Fatima; Potocký, Martin New Phytologist, Vol. 183, Issue 2

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A Distinct Pathway for Polar Exocytosis in Plant Cell Wall ...

Post-Golgi protein sorting and trafficking to the plasma membrane (PM) is generally believed to occur via the trans-Golgi network (TGN). In this study using Nicotiana tabacum pectin methylesterase (NtPPME1) as a marker, we have identified a TGN-independent polar exocytosis pathway that mediates cell wall formation during cell expansion and cytokinesis.

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Exocytosis and Endocytosis The Plant Cell Oxford Academic

A related question is whether plant cells with pronounced polarity of exocytosis, such as the hypersecretory cells of the maize root cap (Roy and Vian, 1991), seed coat cells of Plantago , or pollen tubes (Taylor and Hepler, 1997), achieve this polarity by using SNARE mechanisms, Ca 2+ gradients, cytoskeletal targeting, or a combination of all ...

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Exocyst SEC3 and Phosphoinositides Define Sites of ...

Collectively, our results highlight the function of SEC3a as a polarity determinant that links between polarized exocytosis and cell morphogenesis. The correlation between exocyst function and distribution in pollen tubes provides an explanation for some of the current discrepancies regarding the localization of exocytosis.

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The exocyst complex in exocytosis and cell migration ...

Oct 14, 2011  Exocytosis is a fundamental membrane trafficking event in eukaryotic cells in which membrane proteins or lipids are incorporated into the plasma membrane and vesicle contents are secreted to the exterior of the cell. The exocyst, an evolutionarily conserved octameric protein complex, plays a crucial role in the targeting of secretory vesicles to the plasma membrane during exocytosis.

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The exocyst complex: Current Biology - Home: Cell Press

Sep 10, 2018  The polarity complex Par3–Par6 interacts with the exocyst to mediate vesicle trafficking to the apical surface of epithelial cells. Also, the adaptor protein AP-1B recruits the exocyst to specific vesicles and delivers adhesion proteins to the cell–cell junctions located at the basolateral surface.

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Frontiers The exocyst at the interface between ...

Jan 02, 2014  Exocytosis and cell polarity in plants - exocyst and recycling domains. New Phytol. 183, 255–272. doi: 10.1111/j.1469-8137.2009.02880.x

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Exocyst - Wikipedia

Exocyst. The exocyst is an octameric protein complex involved in vesicle trafficking, specifically the tethering and spatial targeting of post- Golgi vesicles to the plasma membrane prior to vesicle fusion. It is implicated in a number of cell processes, including exocytosis, cell migration, and growth.

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Evolution of late steps in exocytosis:... Wellcome Open ...

Jul 26, 2019  Zárský V, Cvrcková F, Potocký M, et al.: Exocytosis and cell polarity in plants - exocyst and recycling domains. New Phytol. 2009; 183(2): 255–72. PubMed Abstract Publisher Full Text Zárský V, Kulich I, Fendrych M, et al.: Exocyst complexes multiple functions in plant cells secretory pathways. Curr Opin Plant Biol. 2013; 16(6): 726–33.

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Frontiers Regulation of Exocyst Function in Pollen Tube ...

Jan 14, 2021  Exocyst is a heterooctameric protein complex crucial for the tethering of secretory vesicles to the plasma membrane during exocytosis. Compared to other eukaryotes, exocyst subunit EXO70 is represented by many isoforms in land plants whose cell biological and biological roles, as well as modes of regulation remain largely unknown. Here, we present data on the phospho-regulation of exocyst ...

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Endosidin2 targets conserved exocyst complex subunit EXO70 ...

Jan 05, 2016  The exocyst complex is a conserved protein complex that tethers the secretory vesicles to the site of membrane fusion during exocytosis, an essential cellular process that transports molecules, such as protein, to the cell surface or extracellular space. We identified a small molecule that targets the EXO70 (exocyst component of 70 kDa) subunit of the exocyst complex to inhibit exocytosis.

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Analysis of Exocyst Subunit EXO70 Family ... - Plant Physiol

The vesicle-tethering complex exocyst is one of the crucial cell polarity regulators. The EXO70 subunit is required for the targeting of the complex and is represented by many isoforms in angiosperm plant cells. This diversity could be partly responsible for the establishment and maintenance of membrane domains with different composition.

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