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Title: Nanoscale structure, mechanics and growth of epidermal cell walls

Abstract

This article briefly reviews recent advances in nano-scale and micro-scale assessments of primary cell wall structure, mechanical behaviors and expansive growth. Cellulose microfibrils have hydrophobic and hydrophilic faces which may selectively bind different matrix polysaccharides and adjacent microfibrils. Furthermore, these distinctive binding interactions may guide partially aligned cellulose microfibrils in primary cell walls to form a planar, load-bearing network within each lamella of polylamellate walls. Consideration of expansive growth of cross-lamellate walls leads to a surprising inference: side-by-side sliding of microfibrils may be a key rate-limiting physical step, potentially targeted by specific wall loosening agents. Atomic force microscopy shows different patterns of microfibril movement during force-driven extension versus enzymatic loosening. Consequently, simulations of cell growth as elastic deformation of isotropic cell walls may need to be augmented to incorporate the distinctive behavior of growing cell walls.

Authors:
 [1]
  1. Pennsylvania State Univ., University Park, PA (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States); Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1566470
Alternate Identifier(s):
OSTI ID: 1694126
Grant/Contract Number:  
FG02-84ER13179; SC0001090
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Current Opinion in Plant Biology
Additional Journal Information:
Journal Volume: 46; Journal Issue: C; Journal ID: ISSN 1369-5266
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; biofuels (including algae and biomass); bio-inspired; membrane; carbon sequestration; materials and chemistry by design; synthesis (self-assembly)

Citation Formats

Cosgrove, Daniel J. Nanoscale structure, mechanics and growth of epidermal cell walls. United States: N. p., 2018. Web. doi:10.1016/j.pbi.2018.07.016.
Cosgrove, Daniel J. Nanoscale structure, mechanics and growth of epidermal cell walls. United States. https://doi.org/10.1016/j.pbi.2018.07.016
Cosgrove, Daniel J. Wed . "Nanoscale structure, mechanics and growth of epidermal cell walls". United States. https://doi.org/10.1016/j.pbi.2018.07.016. https://www.osti.gov/servlets/purl/1566470.
@article{osti_1566470,
title = {Nanoscale structure, mechanics and growth of epidermal cell walls},
author = {Cosgrove, Daniel J.},
abstractNote = {This article briefly reviews recent advances in nano-scale and micro-scale assessments of primary cell wall structure, mechanical behaviors and expansive growth. Cellulose microfibrils have hydrophobic and hydrophilic faces which may selectively bind different matrix polysaccharides and adjacent microfibrils. Furthermore, these distinctive binding interactions may guide partially aligned cellulose microfibrils in primary cell walls to form a planar, load-bearing network within each lamella of polylamellate walls. Consideration of expansive growth of cross-lamellate walls leads to a surprising inference: side-by-side sliding of microfibrils may be a key rate-limiting physical step, potentially targeted by specific wall loosening agents. Atomic force microscopy shows different patterns of microfibril movement during force-driven extension versus enzymatic loosening. Consequently, simulations of cell growth as elastic deformation of isotropic cell walls may need to be augmented to incorporate the distinctive behavior of growing cell walls.},
doi = {10.1016/j.pbi.2018.07.016},
url = {https://www.osti.gov/biblio/1566470}, journal = {Current Opinion in Plant Biology},
issn = {1369-5266},
number = C,
volume = 46,
place = {United States},
year = {2018},
month = {8}
}

Journal Article:

Citation Metrics:
Cited by: 21 works
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