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

Journal Article · · Current Opinion in Plant Biology
 [1]
  1. Pennsylvania State Univ., University Park, PA (United States)

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.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States); Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-84ER13179; SC0001090
OSTI ID:
1566470
Alternate ID(s):
OSTI ID: 1694126
Journal Information:
Current Opinion in Plant Biology, Vol. 46, Issue C; ISSN 1369-5266
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 55 works
Citation information provided by
Web of Science

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Cited By (13)

Methods to quantify primary plant cell wall mechanics journal July 2019
Cell type-specific gene expression underpins remodelling of cell wall pectin in exocarp and cortex during apple fruit development journal August 2019
Handedness in plant cell expansion: a mutant perspective on helical growth journal August 2019
Application of pan-sharpening algorithm for correlative multimodal imaging using AFM-IR journal April 2019
How water flow, geometry, and material properties drive plant movements journal April 2019
Pathogen‐induced pH changes regulate the growth‐defense balance in plants journal August 2019
Feeling Stressed or Strained? A Biophysical Model for Cell Wall Mechanosensing in Plants journal June 2019
Physical energies to the rescue of damaged tissues journal June 2019
A density functional theory study on the shape of the primary cellulose microfibril in plants: effects of C6 exocyclic group conformation and H-bonding journal January 2020
Disentangling loosening from softening: insights into primary cell wall structure journal September 2019
Pectin methylesterase selectively softens the onion epidermal wall yet reduces acid-induced creep journal February 2020
Mechanical Stress Initiates and Sustains the Morphogenesis of Wavy Leaf Epidermal Cells journal July 2019
Pathogen‐induced pH changes regulate the growth‐defense balance in plants text January 2019

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