galacturonic acid/arabidopsis

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Botrytis cinerea mutants deficient in D-galacturonic acid catabolism have a perturbed virulence on Nicotiana benthamiana and Arabidopsis, but not on tomato.

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התחבר הרשם

D-Galacturonic acid is the most abundant monosaccharide component of pectic polysaccharides that comprise a significant part of most plant cell walls. Therefore, it is potentially an important nutritional factor for Botrytis cinerea when it grows in and through plant cell walls. The d-galacturonic

The biosynthesis of UDP-galacturonic acid in plants. Functional cloning and characterization of Arabidopsis UDP-D-glucuronic acid 4-epimerase.

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התחבר הרשם

UDP-GlcA 4-epimerase (UGlcAE) catalyzes the epimerization of UDP-alpha-D-glucuronic acid (UDP-GlcA) to UDP-alpha-D-galacturonic acid (UDP-GalA). UDP-GalA is a precursor for the synthesis of numerous cell-surface polysaccharides in bacteria and plants. Using a biochemical screen, a gene encoding

A galacturonic acid-containing xyloglucan is involved in Arabidopsis root hair tip growth.

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התחבר הרשם

Root hairs provide a model system to study plant cell growth, yet little is known about the polysaccharide compositions of their walls or the role of these polysaccharides in wall expansion. We report that Arabidopsis thaliana root hair walls contain a previously unidentified xyloglucan that is

Engineering increased vitamin C levels in plants by overexpression of a D-galacturonic acid reductase.

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התחבר הרשם

L-Ascorbic acid (vitamin C) in fruits and vegetables is an essential component of human nutrition. Surprisingly, only limited information is available about the pathway(s) leading to its biosynthesis in plants. Here, we report the isolation and characterization of GalUR, a gene from strawberry that

L-Gulono-1,4-lactone oxidase expression rescues vitamin C-deficient Arabidopsis (vtc) mutants.

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התחבר הרשם

Vitamin C (L-ascorbic acid) has important antioxidant and metabolic functions in both plants and animals, humans have lost the ability to synthesize it. Fresh produce is the major source of vitamin C in the human diet yet only limited information is available concerning its route(s) of synthesis in

Molecular Evolutionary and Expression Pattern Analysis of AKR Genes Shed New Light on GalUR Functional Characteristics in Brassica rapa

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התחבר הרשם

The aldo-keto reductase (AKR) superfamily plays a major role in oxidation-reduction in plants. _D-galacturonic acid reductase (GalUR), an ascorbic acid (AsA) biosynthetic enzyme, belongs to this superfamily. However, the phylogenetic relationship and evolutionary history of the AKR gene

Probing of the reaction pathway of human UDP-xylose synthase with site-directed mutagenesis.

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התחבר הרשם

Uridine 5'-diphosphate (UDP)-xylose (UDP-Xyl) synthase (UXS) catalyzes the oxidative decarboxylation of UDP-glucuronic acid (UDP-GlcUA) to UDP-Xyl. The closely related UDP-glucuronic acid 4-epimerase (UGAE) interconverts UDP-GlcUA and UDP-galacturonic acid (UDP-GalUA) in a highly similar manner via

Reduced photosynthesis in Arabidopsis thaliana atpme17.2 and atpae11.1 mutants is associated to altered cell wall composition

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התחבר הרשם

The cell wall is a complex and dynamic structure that determines plants' performance by constant remodelling of its compounds. Although cellulose is its major load-bearing component, pectins are crucial to determine wall characteristics. Changes in pectin physicochemical properties, due to pectin

Major changes in the cell wall during silique development in Arabidopsis thaliana.

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התחבר הרשם

Fruit development is a highly complex process, which involves major changes in plant metabolism leading to cell growth and differentiation. Changes in cell wall composition and structure play a major role in modulating cell growth. We investigated the changes in cell wall composition and the

Effects of Pectin Molecular Weight Changes on the Structure, Dynamics, and Polysaccharide Interactions of Primary Cell Walls of Arabidopsis thaliana: Insights from Solid-State NMR.

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התחבר הרשם

Significant cellulose-pectin interactions in plant cell walls have been reported recently based on 2D 13C solid-state NMR spectra of intact cell walls, but how these interactions affect cell growth has not been probed. Here, we characterize two Arabidopsis thaliana lines with altered expression of

Tubby-like Protein 2 regulates homogalacturonan biosynthesis in Arabidopsis seed coat mucilage.

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התחבר הרשם

A possible transcription factor TLP2 was identified to be involved in the regulation of HG biosynthesis in Arabidopsis seed mucilage. TLP2 can translocate into nucleus from plasma membrane by interacting with NF-YC3. The discovery of TLP2 gene function can further fulfill the regulatory network of

AMR1, an Arabidopsis gene that coordinately and negatively regulates the mannose/l-galactose ascorbic acid biosynthetic pathway.

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התחבר הרשם

Ascorbic acid (AsA) biosynthesis in plants occurs through a complex, interconnected network with mannose (Man), myoinositol, and galacturonic acid as principal entry points. Regulation within and between pathways in the network is largely uncharacterized. A gene that regulates the Man/l-galactose

UUAT1 Is a Golgi-Localized UDP-Uronic Acid Transporter That Modulates the Polysaccharide Composition of Arabidopsis Seed Mucilage.

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התחבר הרשם

UDP-glucuronic acid (UDP-GlcA) is the precursor of many plant cell wall polysaccharides and is required for production of seed mucilage. Following synthesis in the cytosol, it is transported into the lumen of the Golgi apparatus, where it is converted to UDP-galacturonic acid (UDP-GalA),

Pectin biosynthesis: GALS1 in Arabidopsis thaliana is a β-1,4-galactan β-1,4-galactosyltransferase.

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התחבר הרשם

β-1,4-Galactans are abundant polysaccharides in plant cell walls, which are generally found as side chains of rhamnogalacturonan I. Rhamnogalacturonan I is a major component of pectin with a backbone of alternating rhamnose and galacturonic acid residues and side chains that include α-1,5-arabinans,

A subtilisin-like serine protease essential for mucilage release from Arabidopsis seed coats.

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התחבר הרשם

During Arabidopsis seed development large quantities of mucilage, composed of pectins, are deposited into the apoplast underneath the outer wall of the seed coat. Upon imbibition of mature seeds, the stored mucilage expands through hydration and breaks the outer cell wall that encapsulates the whole

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Herbal & Natural Medicine

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