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.
منابع مشابه
Cellulose Microfibril/Nanofibril and Its Nanocompsites
Cellulose micro/nanofibril (CMNF) as a reinforcing material for composites is becoming more and more attractive to researchers in composite science because of its potential lightweight and high strength. CMNF is generally prepared by either physical treatment, e.g., by a high pressure homogenizer and/or high pressure refiner, or chemical treatments, e.g., acid hydrolysis. In this study, attempt...
متن کاملThe Size of the Cellulose Microfibril
Recently the lateral width of the cellulose microfibril has been estimated as 30 A rather than about 150 to 200 A, by extrapolation of data from model shadowing experiments. The difference was attributed to a layer of metal deposited during shadowing. However, direct photographs of the same microfibrils parallel and perpendicular to the direction of shadowing, of unshadowed portions of microfib...
متن کاملThe impact of alterations in lignin deposition on cellulose organization of the plant cell wall
BACKGROUND Coordination of synthesis and assembly of the polymeric components of cell walls is essential for plant growth and development. Given the degree of co-mingling and cross-linking among cell wall components, cellulose organization must be dependent on the organization of other polymers such as lignin. Here we seek to identify aspects of that codependency by studying the structural orga...
متن کاملModelling Plant Variation Through Growth
This paper introduces a method for creating naturally varied plants from a given basic plant model. Previous techniques create variation in plants by introducing local randomness to the plant model’s description. However, randomness is restricted by the model’s parameterization and lack of correlation between local features making varying global properties (e.g. branch and stem curvature) diffi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Theoretical Biology
سال: 2021
ISSN: ['1095-8541', '0022-5193']
DOI: https://doi.org/10.1016/j.jtbi.2021.110736