Lockhart with a twist: Modelling cellulose microfibril deposition and reorientation reveals twisting plant cell growth mechanisms

نویسندگان

چکیده

Plant morphology emerges from cellular growth and structure. The turgor-driven diffuse of a cell can be highly anisotropic: significant longitudinally negligible radially. Such anisotropy is ensured by cellulose microfibrils (CMF) reinforcing the wall in hoop direction. To maintain cell’s integrity during growth, new material including CMF must continually deposited. We develop mathematical model representing as cylindrical pressure vessel fibre-reinforced viscous sheet, explicitly mechano-sensitive angle deposition. incorporates interactions between turgor, external forces, reorientation extension, matrix stiffening. Using model, we reinterpret some recent experimental findings, reexamine popular hypothesis CMF/microtubule alignment. explore how handedness twisting depends on torque intrinsic properties, find that cells twist left-handedly ‘by default’ suitable sense. Overall, this study provides unified mechanical framework for understanding left- right-handed twist-growth seen many plants.

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ژورنال

عنوان ژورنال: Journal of Theoretical Biology

سال: 2021

ISSN: ['1095-8541', '0022-5193']

DOI: https://doi.org/10.1016/j.jtbi.2021.110736