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  1. No Access

    Article

    Cholesteric-like crystal analogs in glucuronoxylan-rich cell wall composites: Experimental approach of acellular re-assembly from native cellulosic suspension

    Many plant cell walls are constructed according to a helicoidal pattern that is analog to a cholesteric liquid crystal order. This raises the question whether the wall assembly passes through a true but tempor...

    B. Vian, D. Reis, D. Darzens, J. C. Roland in Protoplasma (1994)

  2. No Access

    Article

    The sustained and warped helicoidal pattern of a xylan-cellulose composite: the stony endocarp model

    The study was devoted to the microstructure of the thick walled cells of the endocarp of prune (Prunus domestica L.), cherry (Prunus cerasus L.), walnut (Juglons regia L.). The tissue is formed of closely associa...

    D. Reis, J. C. Roland, M. Mosiniak, D. Darzens, B. Vian in Protoplasma (1992)

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    Morphogenesis of plant cell walls at the supramolecular level: Internal geometry and versatility of helicoidal expression

    The concept of the cell wall organized in a helicoidal pattern was outlined. When studied in transmission electron microscopy, the observed textures appear as a deceptive figure,i.e., as a “trompe l'oeil”. Diffic...

    J. C. Roland, D. Reis, B. Vian, B. Satiat-Jeunemaitre, M. Mosiniak in Protoplasma (1987)

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    Article

    Sequential patterns of intramural digestion of galactoxyloglucan in tamarind seedlings

    The structure and breakdown of galactoxyloglucan (GXG)-rich cells was studied from cotyledons of Tamarindus indicus L. The depletion of GXG was followed at different levels: quantitative, histochemical and cytoch...

    D. Reis, B. Vian, D. Darzens, J.-C. Roland in Planta (1987)

  5. No Access

    Article

    The glucuronoxylans and the helicoidal shift in cellulose microfibrils in linden wood: Cytochemistryin muro and on isolated molecules

    In fibres of wood, the classical S1 and S2 layers are connectedvia a transition zone where a helicoidal texture occurs. In order to understand the actual mechanism of cellulose microfibril rotation in this zone, ...

    B. Vian, D. Reis, M. Mosiniak, J. C. Roland in Protoplasma (1986)

  6. No Access

    Article

    Morphogenesis of twisted cell wall: Chronology following an osmotic shock

    The effect of an osmotic shock on the subsequent growth and cell wall texture was studied at 0, 1/2, 1, 2, 4 and 24 hours. Cells were taken at the beginning of their exponential growth from mung bean hypocotyl.

    D. Reis, J. C. Roland, B. Vian in Protoplasma (1985)

  7. No Access

    Article

    Further observations on cell wall morphogenesis and polysaccharide arrangement during plant growth

    The three-dimensional arrangement of the polysaccharide chains in cell walls was investigated, using ultracryotomy and cytochemistry, in order to test the validity of the previously postulated “ordered fibril ...

    J. -C. Roland, Brigitte Vian, Danièle Reis in Protoplasma (1977)