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Multidimensional solid-state NMR spectroscopy of plant cell walls

Journal Article · · Solid State Nuclear Magnetic Resonance
 [1];  [1];  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Chemistry

Plant biomass has become an important source of bio-renewable energy in modern society. The molecular structure of plant cell walls is difficult to characterize by most atomic-resolution techniques due to the insoluble and disordered nature of the cell wall. Solid-state NMR (SSNMR) spectroscopy is uniquely suited for studying native hydrated plant cell walls at the molecular level with chemical resolution. Significant progress has been made in the last five years to elucidate the molecular structures and interactions of cellulose and matrix polysaccharides in plant cell walls. These studies have focused on primary cell walls of growing plants in both the dicotyledonous and grass families, as represented by the model plants Arabidopsis thaliana, Brachypodium distachyon, and Zea mays. To date, these SSNMR results have shown that 1) cellulose, hemicellulose, and pectins form a single network in the primary cell wall; 2) in dicot cell walls, the protein expansin targets the hemicellulose-enriched region of the cellulose microfibril for its wall-loosening function; and 3) primary wall cellulose has polymorphic structures that are distinct from the microbial cellulose structures. This article summarizes these key findings, and points out future directions of investigation to advance our fundamental understanding of plant cell wall structure and function.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Lignocellulose Structure and Formation (CLSF)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0001090
OSTI ID:
1388014
Alternate ID(s):
OSTI ID: 1397044
Journal Information:
Solid State Nuclear Magnetic Resonance, Journal Name: Solid State Nuclear Magnetic Resonance Journal Issue: C Vol. 78; ISSN 0926-2040
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

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Understanding Surface and Interfacial Chemistry in Functional Nanomaterials via Solid-State NMR journal March 2017
Structural factors affecting 13C NMR chemical shifts of cellulose: a computational study journal November 2017
Atomic resolution of cotton cellulose structure enabled by dynamic nuclear polarization solid-state NMR journal November 2018
Integrated analysis of modified Japanese cypress using solid-state NMR spectra and nuclear magnetic relaxation times journal February 2019
Fast MAS 1H–13C correlation NMR for structural investigations of plant cell walls journal September 2019
The molecular structure of plant sporopollenin journal December 2018
Structural Characterization of Lignin and Its Degradation Products with Spectroscopic Methods journal January 2017

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