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Страница 1 от 138 резултата
Flying saucer1 is a transmembrane RING E3 ubiquitin ligase that regulates the degree of pectin methylesterification in Arabidopsis seed mucilage.
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Pectins are complex polysaccharides that form the gel matrix of the primary cell wall and are abundant in the middle lamella that holds plant cells together. Their degree of methylesterification (DM) impacts wall strength and cell adhesion since unesterified pectin regions can cross-link via Ca(2+)
AtBXL1 encodes a bifunctional beta-D-xylosidase/alpha-L-arabinofuranosidase required for pectic arabinan modification in Arabidopsis mucilage secretory cells.
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Following pollination, the epidermal cells of the Arabidopsis (Arabidopsis thaliana) ovule undergo a complex differentiation process that includes the synthesis and polar secretion of pectinaceous mucilage followed by the production of a secondary cell wall. Wetting of mature seeds leads to the
Composition and physicochemical properties of outer mucilage from seeds of Arabidopsis natural accessions.
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Arabidopsis thaliana (Arabidopsis) seeds are myxospermous and release two layers of mucilage on imbibition. The outer layer can be extracted with water facilitating the analysis of its major constituent, polysaccharides. The composition and properties of outer mucilage have been determined
PME58 plays a role in pectin distribution during seed coat mucilage extrusion through homogalacturonan modification.
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Pectins are major components of plant primary cell walls. They include homogalacturonans (HGs), which are the most abundant pectin and can be the target of apoplastic enzymes like pectin methylesterases (PMEs) that control their methylesterification level. Several PMEs are expressed in the seed coat
MYB52 Negatively Regulates Pectin Demethylesterification in Seed Coat Mucilage.
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Pectin, which is a major component of the plant primary cell walls, is synthesized and methyl-esterified in the Golgi apparatus and then demethylesterified by pectin methylesterases (PMEs) located in the cell wall. The degree of methylesterification affects the functional properties of pectin, and
The micro- and nanoscale spatial architecture of the seed mucilage-Comparative study of selected plant species.
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The seed coat mucilage envelope is formed just after hydration and surrounds the seed as a gel-like, transparent capsule. The mucilage envelope represents a special type of modified cell wall with all of the typical polysaccharides i.e. cellulose, pectins and hemicelluloses. The chemical composition
Expression of PRX36, PMEI6 and SBT1.7 is controlled by complex transcription factor regulatory networks for proper seed coat mucilage extrusion.
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Mucilage secretory cells (MSC) form an intriguing cell layer important for seed germination. In Arabidopsis thaliana, several master transcription factors (TFs) and "actor" proteins have already been identified as key players for seed coat differentiation including epidermal cell formation, mucilage
LASSO modeling of the Arabidopsis thaliana seed/seedling transcriptome: a model case for detection of novel mucilage and pectin metabolism genes.
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Whole genome transcript correlation-based approaches have been shown to be enormously useful for candidate gene detection. Consequently, simple Pearson correlation has been widely applied in several web based tools. That said, several more sophisticated methods based on e.g. mutual information or
Arabidopsis FLYING SAUCER2 functions redundantly with FLY1 to establish normal seed coat mucilage.
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Following exposure to water, mature Arabidopsis seeds are surrounded by a gelatinous capsule, termed mucilage. The mucilage consists of pectin-rich polysaccharides, which are produced in epidermal cells of the seed coat. Although pectin is a major component of plant cell walls, its biosynthesis and
Boron-bridged RG-II and calcium are required to maintain the pectin network of the Arabidopsis seed mucilage ultrastructure.
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The structure of a pectin network requires both calcium (Ca2+) and boron (B). Ca2+ is involved in crosslinking pectic polysaccharides and arbitrarily induces the formation of an "egg-box" structure among pectin molecules, while B crosslinks rhamnogalacturonan II (RG-II) side chain A apiosyl residues
Tubby-like Protein 2 regulates homogalacturonan biosynthesis in Arabidopsis seed coat mucilage.
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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
Identification of Periplasmic Root-Cap Mucilage in Developing Columella Cells of Arabidopsis thaliana.
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Plant roots secrete various substances with diverse functions against both plants and microbes in the rhizosphere. A major secretory substance is root-cap mucilage, whose functions have been well characterized, albeit mainly in crops. However, little is currently known about the developmental
Polysaccharide Structures in the Outer Mucilage of Arabidopsis Seeds Visualised by AFM.
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Evidence is presented that the polysaccharide rhamnogalacturonan I (RGI) can be biosynthesised in remarkably organised branched configurations, in surprisingly long versions, and can self-assemble into a plethora of structures. AFM imaging has been applied to study the outer mucilage obtained from
The transcriptional regulator LEUNIG_HOMOLOG regulates mucilage release from the Arabidopsis testa.
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Exposure of the mature Arabidopsis (Arabidopsis thaliana) seed to water results in the rapid release of pectinaceous mucilage from the outer cells of the testa. Once released, mucilage completely envelops the seed in a gel-like capsule. The physical force required to rupture the outer cell wall of
New steps in mucilage biosynthesis revealed by analysis of the transcriptome of UDP-rhamnose/UDP-galactose transporter 2 (URGT2) mutant.
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Upon imbibition, epidermal cells of Arabidopsis thaliana seeds release a mucilage formed mostly by pectic polysaccharides. The Arabidopsis mucilage is composed mainly of unbranched rhamnogalacturonan I (RG-I), with low amounts of cellulose, homogalacturonan, and traces of xylan, xyloglucan,
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