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dc.contributor.authorLipowczan, Marcin-
dc.contributor.authorBorowska-Wykręt, Dorota-
dc.contributor.authorNatonik-Białoń, Sandra-
dc.contributor.authorKwiatkowska, Dorota-
dc.identifier.citationJournal of Experimental Botany, Vol. 69, No. 18 (2018), pp. 4349-4362pl_PL
dc.description.abstractThe relatively thick primary walls of epidermal and collenchyma cells often form waviness on the surface that faces the protoplast when they are released from the tensile in-plane stress that operates in situ. This waviness is a manifestation of buckling that results from the heterogeneity of the elastic strain across the wall. In this study, this heterogeneity was confirmed by the spontaneous bending of isolated wall fragments that were initially flat. We combined the empirical data on the formation of waviness in growing cell walls with computations of the buckled wall shapes. We chose cylindrical-shaped organs with a high degree of longitudinal tissue stress because in such organs the surface deformation that accompanies the removal of the stress is strongly anisotropic and leads to the formation of waviness in which wrinkles on the inner wall surface are always transverse to the organ axis. The computations showed that the strain heterogeneity results from individual or overlaid gradients of pre-stress and stiffness across the wall. The computed wall shapes depend on the assumed wall thickness and mechanical gradients. Thus, a quantitative analysis of the wall waviness that forms after stress removal can be used to assess the mechanical heterogeneity of the cell wall.pl_PL
dc.rightsUznanie autorstwa 3.0 Polska*
dc.subjectHelianthus annuus hypocotylpl_PL
dc.subjectHordeum vulgare coleoptilepl_PL
dc.subjectmechanical heterogeneitypl_PL
dc.subjectmechanical stresspl_PL
dc.subjectprimary cell wallpl_PL
dc.subjectTaraxacum officinale pedunclepl_PL
dc.subjectYoung’s moduluspl_PL
dc.titleGrowing cell walls show a gradient of elastic strain across their layerspl_PL
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