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Inositol Metabolism in Plants. V. Conversion of Myo-inositol to Uronic Acid and Pentose Units of Acidic Polysaccharides in Root-tips of Zea mays.

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The metabolism of myo-inositol-2-(14)C, d-glucuronate-1-(14)C, d-glucuronate-6-(14)C, and l-methionine-methyl-(14)C to cell wall polysaccharides was investigated in excised root-tips of 3 day old Zea mays seedlings. From myo-inositol, about one-half of incorporated label was recovered in ethanol

The Conversion of d-Glucose-6-C to Cell Wall Polysaccharide Material in Zea mays in Presence of High Endogenous Levels of Myoinositol.

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When corn (Zea mays) roots are supplied with high concentrations of unlabeled myoinositol, the conversion of d-glucose-6-(14)C to cell wall galacturonic acid is significantly reduced compared to controls, although its incorporation into cell wall glucosyl units remains unchanged. This suggests that,

Enzymic Analysis of Feruloylated Arabinoxylans (Feraxan) Derived from Zea mays Cell Walls I : Purification of Novel Enzymes Capable of Dissociating Feraxan Fragments from Zea mays Coleoptile Cell Wall.

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Three novel beta-xylan xylanohydrolases capable of dissociating ferulated arabinoxylan (Feraxan) from maize (Zea mays L. hybrid B73 x Mo17) coleoptile sections and two conventional beta-xylan xylanohydrolases (xylanases) were purified from a Bacillus subtilis industrial enzyme preparation (Novo Ban

Uronide Deposition Rates in the Primary Root of Zea mays.

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The spatial distribution of the rate of deposition of uronic acids in the elongation zone of Zea mays L. Crow WF9 x Mo 17 was determined using the continuity equation with experimentally determined values for uronide density and growth velocity. In spatial terms, the uronide deposition rate has a

Effect of Soil pH on Growth and Cation Deposition in the Root Tip of Zea mays L.

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The effects of sandy soil pH on the distribution of growth velocities and on cation concentrations and deposition rates in root growth zones of Zea mays L. seedlings were investigated. The pH values of the rooting medium varied between 4.2 and 8.6 in sand culture (70% saturated) without external

Structural Analysis of Secreted Root Slime from Maize (Zea mays L.).

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Secreted slime isolated from the incubation medium of Zea mays roots maintained axenically contains fucose, arabinose, xylose, galactose, and glucose as the major monosaccharides. The slime preparation contains low levels (3% weight/weight [w/w]) of uronic acids. Methylation analysis reveals an

Chilling-induced physiological, anatomical and biochemical responses in the leaves of Miscanthus × giganteus and maize (Zea mays L.).

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Miscanthus × giganteus and Zea mays, closely-related C4 grasses, originated from warm climates react differently to low temperature. To investigate the response to cold (12-14 °C) in these species, the photosynthetic and anatomical parameters as well as biochemical properties of the cell wall were

Changes in Esterification of the Uronic Acid Groups of Cell Wall Polysaccharides during Elongation of Maize Coleoptiles.

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Cell walls of grasses have two major polysaccharides that contain uronic acids, the hemicellulosic glucuronoarabinoxylans and the galactosyluronic acid-rich pectins. A technique whereby esterified uronic acid carboxyl groups are reduced selectively to yield their respective 6,6-dideuterio neutral

Evaluation of Seaweed Extracts From Laminaria and Ascophyllum nodosum spp. as Biostimulants in Zea mays L. Using a Combination of Chemical, Biochemical and Morphological Approaches.

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Seaweed extracts can be employed as biostimulants during crop cultivation owing to their positive effects on plant performance. Therefore, in this study one extract from Laminaria (A) and five extracts from Ascophyllum nodosum (B-F) were assayed on maize (Zea mays L.) plants supplied for 2 days with

Pectic polysaccharide from corn (Zea mays L.) effectively inhibited multi-step mediated cancer cell growth and metastasis.

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Corn pectic polysaccharide (COPP) inhibited galectin-3 mediated hemagglutination at Minimum Inhibitory Concentration (MIC) of 4.08 μg/mL as opposed to citrus pectin (25 μg/mL), a well known galectin-3 inhibitor and lactose (4.16 μg/mL)--sugar specific to galectin-3. COPP effectively (72%) inhibited

Hemicellulosic polymers of cell walls of zea coleoptiles.

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Hemicellulosic polymers comprised about 43% of the primary walls of Zea mays L. cv WF9 x Bear 38 coleoptiles; these polymers were separated by an alkali-gradient into three major fractions. Fraction 1 (GAX I) was solubilized from walls with 0.01 to 0.045 n KOH and consisted of novel

Structure of the arabinogalactan from zea shoots.

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The structure of the arabinogalactan obtained from the buffer-homogenate of Zea mays L. (hybrid B73 x Mo17) shoots has been studied. The purified polysaccharide was investigated by methylation analysis before and after controlled acid hydrolysis. Arabinogalactan-1 consists of arabinose, galactose,

Characterization of root mucilage from Melastoma malabathricum, with emphasis on its roles in aluminum accumulation.

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Plant roots exude viscous polysaccharides, called mucilage. One of the suggested roles of mucilage is immobilization of toxic metal cations, including aluminum (Al), in the rhizosphere. Mucilage exuded from roots of Melastoma malabathricum (Al accumulator) was characterized in comparison with that

Cell wall architecture of the elongating maize coleoptile.

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The primary walls of grasses are composed of cellulose microfibrils, glucuronoarabinoxylans (GAXs), and mixed-linkage beta-glucans, together with smaller amounts of xyloglucans, glucomannans, pectins, and a network of polyphenolic substances. Chemical imaging by Fourier transform infrared

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