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Seite 1 von 28 Ergebnisse
Highly substituted glucuronoarabinoxylans (hsGAXs) and low-branched xylans show a distinct localization pattern in the tissues of Zea mays L.
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Polyclonal antibodies which recognized highly substituted glucuronoarabinoxylans (hsGAXs) and low-branched xylans and did not cross-react with each other, were raised in order to examine localization of these epitopes in internodes of maize. Immunofluorescent labeling revealed different pattern
Pre-formed xyloglucans and xylans increase in molecular weight in three distinct compartments of a maize cell-suspension culture.
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Cultured cells of maize ( Zea mays L.) were pulse-labelled with l-[1-(3)H]arabinose (Ara) and then monitored for 7 days. The (3)H-hemicelluloses present in three compartments (protoplasm, cell wall and culture medium) were size-fractionated and the fractions assayed for [(3)H]xyloglucans and
Cell-wall properties contributing to improved deconstruction by alkaline pre-treatment and enzymatic hydrolysis in diverse maize (Zea mays L.) lines.
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A maize (Zea mays L. subsp. mays) diversity panel consisting of 26 maize lines exhibiting a wide range of cell-wall properties and responses to hydrolysis by cellulolytic enzymes was employed to investigate the relationship between cell-wall properties, cell-wall responses to mild NaOH
Enzymic Analysis of Feruloylated Arabinoxylans (Feraxan) Derived from Zea mays Cell Walls : III. Structural Changes in the Feraxan during Coleoptile Elongation.
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Changes in structural features of feraxan (feruloylated arabinoxylans) in cell walls during development of maize (Zea mays L.) coleoptiles were investigated by analysis of fragments released by feraxanase, a specific enzyme purified from Bacillus subtilis. The following patterns were identified: (a)
The roles of xylan and lignin in oxalic acid pretreated corncob during separate enzymatic hydrolysis and ethanol fermentation.
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High yields of hemicellulosic and cellulosic sugars are critical in obtaining economical conversion of agricultural residues to ethanol. To optimize pretreatment conditions, we evaluated oxalic acid loading rates, treatment temperatures and times in a 2(3) full factorial design. Response-surface
Cell wall composition in juvenile and adult leaves of maize (Zea mays L.).
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Many leaf characteristics vary with position along the culm in maize (Zea mays L.) due to the existence of vegetative phase change and heteroblasty. The objective of this work was to determine if differences in cell wall composition exist among developmental phases and between Cg1, a developmental
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
Extracellular cross-linking of xylan and xyloglucan in maize cell-suspension cultures: the role of oxidative phenolic coupling.
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Cell-suspension cultures of maize ( Zea mays L.) released soluble extracellular polysaccharides (SEPs) into their medium. Some or all of the SEPs had feruloyl ester groups. Pulse-labelling with [(3)H]arabinose was used to monitor changes in the SEPs' M(r) (estimated by gel-permeation chromatography)
Maize WI5 encodes an endo-1,4-β-xylanase required for secondary cell wall synthesis and water transport in xylem.
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Water transport from roots to leaves through xylem is important for plant growth and development. Defects in water transport can cause drought stress, even when there is adequate water in the soil. Here, we identified the maize (Zea mays) wilty5 (wi5) mutant, which exhibits marked dwarfing and leaf
Glucuronoxylan xylanohydrolase. A unique xylanase with the requirement for appendant glucuronosyl units.
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A new category of beta-(1----4)-xylan xylanohydrolases that exhibit a specific capacity to hydrolyze glucuronoxylans was characterized using heteroxylans prepared from Vigna (Vigna angularis Ohwi et Ohashi cv. Takara) and maize (Zea mays L.) cell walls together with appropriate derivatives as
The predominant protein on the surface of maize pollen is an endoxylanase synthesized by a tapetum mRNA with a long 5' leader.
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In plants, the pollen coat covers the exine wall of the pollen and is the outermost layer that makes the initial contact with the stigma surface during sexual reproduction. Little is known about the constituents of the pollen coat, especially in wind-pollinated species. The pollen coat was extracted
Arrangement of mixed-linkage glucan and glucuronoarabinoxylan in the cell walls of growing maize roots.
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OBJECTIVE
Plant cell enlargement is unambiguously coupled to changes in cell wall architecture, and as such various studies have examined the modification of the proportions and structures of glucuronoarabinoxylan and mixed-linkage glucan in the course of cell elongation in grasses. However, there
Early cell-wall modifications of maize cell cultures during habituation to dichlobenil.
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Studies involving the habituation of plant cell cultures to cellulose biosynthesis inhibitors have achieved significant progress as regards understanding the structural plasticity of cell walls. However, since habituation studies have typically used high concentrations of inhibitors and long-term
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
Effects of Storage Moisture Content on Corn Stover Biomass Stability, Composition, and Conversion Efficacy
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Variable moisture content of biomass during storage is known to compromise feedstock stability, yet a great deal of uncertainty remains on how to manage or mitigate the issue. While moisture contents above 20% risk unacceptable losses in aerobic feed and forage storage, no quantitative relationship
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