Cellulose-glucuronoxylans and plant cell wallstructure

Reis, Danièle; Vian, B.; Roland, Jean-Claude

doi:10.1016/0968-4328(94)90041-8

Cited by 62 publications

(55 citation statements)

References 58 publications

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“…It is generally accepted that xylans interact with cellulose and lignin in wood cell walls (Atalla 2005;Reis et al 1994). Because the highest concentrations of xylans are found in the transition zone between the S 1 and S 2 layers, Vian et al (1986) suggested that xylans may organize in a cholesteric assembly and act as a twisting agent for cellulose microfibrils.…”

Section: Introductionmentioning

confidence: 98%

Immunolocalization and structural variations of xylan in differentiating earlywood tracheid cell walls of Cryptomeria japonica

Kim

Awano

Yoshinaga

et al. 2010

Planta

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We investigated the spatial and temporal distribution of xylans in the cell walls of differentiating earlywood tracheids of Cryptomeria japonica using two different types of monoclonal antibodies (LM10 and LM11) combined with immunomicroscopy. Xylans were first deposited in the corner of the S(1) layer in the early stages of S(1) formation in tracheids. Cell corner middle lamella also showed strong xylan labeling from the early stage of cell wall formation. During secondary cell wall formation, the innermost layer and the boundary between the S(1) and S(2) layers (S(1)/S(2) region) showed weaker labeling than other parts of the cell wall. However, mature tracheids had an almost uniform distribution of xylans throughout the entire cell wall. Xylan localization labeled with LM10 antibody was stronger in the outer S(2) layer than in the inner layer, whereas xylans labeled with LM11 antibody were almost uniformly distributed in the S(2) layer. In addition, the LM10 antibody showed almost no xylan labeling in the S(1)/S(2) region, whereas the LM11 antibody revealed strong xylan labeling in the S(1)/S(2) region. These findings suggest that structurally different types of xylans may be deposited in the tracheid cell wall depending on the developmental stage of, or location in, the cell wall. Our study also indicates that deposition of xylans in the early stages of tracheid cell wall formation may be spatially consistent with the early stage of lignin deposition in the tracheid cell wall.

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Section: Introductionmentioning

confidence: 98%

Immunolocalization and structural variations of xylan in differentiating earlywood tracheid cell walls of Cryptomeria japonica

Kim

Awano

Yoshinaga

et al. 2010

Planta

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“…The methods showed that GXs are present in the secondary wall of dicotyledons (Vian et al 1983(Vian et al , 1986(Vian et al , 1992Northcote et al 1989). The chemical properties of GXs were reviewed and their possible roles were postulated by Reis et al (1994). They are composed of a linear backbone of ~-(1,4)-linked-D-xylopyranose and irregularly substituted at O-2 position by 4-O-methyl-c~-D-glucuronic acid (Fengel and Wegener 1989).…”

Section: Introductionmentioning

confidence: 99%

Localization of glucuronoxylans in Japanese beech visualized by immunogold labelling

1998

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Summary. An antiserum against glucuronoxylans (GXs) has been raised from a mouse. The dot-blot immunoassay and competitive inhibition test indicated that the antibodies could bind specifically to GXs. Therefore, the antiserum was used for immunogold labelling to investigate the localization of GXs in Japanese beech. Labelling of GXs was seen only in the secondary wails of xylem cells, but not in the primary walls or the middle lamella. GXs were evenly distributed in the secondary walls except for the outer part of the outer secondary-wall layer in which they were less abundant. The labelling density in each secondary-wall layer (S 1, $2, and $3) increased during cell wall formation. This result strongly suggests that the deposition of GXs occurs in a penetrative way.

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“…Except in special cases (see Reis et al, 1994), the cytoskeleton is somehow involved in directing the orientation of deposition of cellulose microfibrils in algae and plants (for review, see Giddings and Staehelin, 1991). Most studies have indicated that the cortical microtubule (MT) network is the major entity involved, because the alignment of this network is highly correlated with the alignment of the most recently deposited cellulose; furthermore, inhibitors that disrupt MT structure also lead to disorganized deposition of cellulose.…”

Section: Role Of the Cytoskeleton In Celwlose Synthesismentioning

confidence: 99%