beta glucan/oryza sativa

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Oryza sativa Brittle Culm 1-like 6 modulates β-glucan levels in the endosperm cell wall.

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The endosperm cell wall affects post-harvest grain quality by affecting the mechanical fragility and water absorption of the grain. Therefore, understanding the mechanism underlying endosperm cell wall synthesis is important for determining the growth and quality of cereals. However, the molecular

Cell wall (1-->3)- and (1-->3, 1-->4)-beta-glucans during early grain development in rice (Oryza sativa L.).

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Immunogold labeling was used to study the distribution of (1-->3)-beta-glucans and (1-->3, 1-->4)-beta-glucans in the rice grain during cellularization of the endosperm. At approximately 3-5 d after pollination the syncytial endosperm is converted into a cellular tissue by three developmentally

Characterization and Solubilization of β-Glucan Synthases from Cultured Rice Cells.

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Two types of β-glucan synthases, GS-I and GS-II, were found in cultured rice cells (Oryza sativa L.). In glycerol density gradient centrifugation, GS-I activity peak co-migrated with a marker enzyme of the Golgi membrane, while GS-II co-migrated with the plasma membrane. Analysis of the reaction

The small GTPase Rab5a is essential for intracellular transport of proglutelin from the Golgi apparatus to the protein storage vacuole and endosomal membrane organization in developing rice endosperm.

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Rice (Oryza sativa) glutelins are synthesized on the endoplasmic reticulum as larger precursors, which are then transported via the Golgi to the protein storage vacuole (PSV), where they are processed into acidic and basic subunits. Three independent glutelin precursor mutant4 (glup4) rice lines,

Temperature modulates the cell wall mechanical properties of rice coleoptiles by altering the molecular mass of hemicellulosic polysaccharides.

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The present study was conducted to investigate the mechanism inducing the difference in the cell wall extensibility of rice (Oryza sativa L. cv. Koshihikari) coleoptiles grown under various temperature (10-50 degrees C) conditions. The growth rate and the cell wall extensibility of rice coleoptiles

Beta-D-glycan synthases and the CesA gene family: lessons to be learned from the mixed-linkage (1-->3),(1-->4)beta-D-glucan synthase.

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Cellulose synthase genes (CesAs) encode a broad range of processive glycosyltransferases that synthesize (1-->4)beta-D-glycosyl units. The proteins predicted to be encoded by these genes contain up to eight membrane-spanning domains and four 'U-motifs' with conserved aspartate residues and a QxxRW

Characterization of transgenic rice plants over-expressing the stress-inducible beta-glucanase gene Gns1.

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The Gns1 gene of rice (Oryza sativa L. japonica) encodes 1,3;1,4-beta glucanase (EC 3.2.1.73), which hydrolyzes 1,3;1,4-beta-glucosidic linkages on 1,3;1,4-beta-glucan, an important component of cell walls in the Poaceae family. RNA and protein gel blot analyses demonstrated that blast disease or

Cloning, characterization and expression of OsGLN2, a rice endo-1,3-beta-glucanase gene regulated developmentally in flowers and hormonally in germinating seeds.

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We report here the isolation and characterization of a new endo-1,3-beta-glucanase (1,3-beta-GLU) cDNA, OsGLN2, that is expressed both in flowers and in germinating seeds of rice (Oryza sativa L.). The isolated OsGLN2 gene encoded a protein which displayed 72%, 93% and 92% identity at the amino acid

Structure and Function of the Golgi Complex in Rice Cells (II. Purification and Characterization of Golgi Membrane-Bound Nucleoside Diphosphatase).

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Inosine diphosphatase bound to Golgi membranes was studied in rice (Oryza sativa L. cv Nipponkai) cells. The enzyme was solubilized with Triton X-100 from isolated rice Golgi membranes and was highly purified employing a series of chromatography steps in the presence of 20% glycerol and 0.1% Triton

A rice family 9 glycoside hydrolase isozyme with broad substrate specificity for hemicelluloses in type II cell walls.

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An auxin analog, 2,4-D, stimulates the activity of endo-1,4-beta-glucanase (EGase) in rice (Oryza sativa L.). The auxin-induced activity from three protein fractions was purified to homogeneity from primary root tissues (based on SDS-PAGE and isoelectric focusing after Coomassie brilliant blue

Genetics and physiology of cell wall polysaccharides in the model C4 grass, Setaria viridis spp.

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BACKGROUND Setaria viridis has emerged as a model species for the larger C4 grasses. Here the cellulose synthase (CesA) superfamily has been defined, with an emphasis on the amounts and distribution of (1,3;1,4)-β-glucan, a cell wall polysaccharide that is characteristic of the grasses and is of

A guanine nucleotide exchange factor for Rab5 proteins is essential for intracellular transport of the proglutelin from the Golgi apparatus to the protein storage vacuole in rice endosperm.

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Rice (Oryza sativa) glutelins are synthesized on the endoplasmic reticulum as a precursor, which are then transported via the Golgi to protein storage vacuoles (PSVs), where they are proteolytically processed into acidic and basic subunits. The glutelin precursor mutant6 (glup6) accumulates

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