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Acknowledgement to Reviewers of Fibers in 2017
Open AccessFeature PaperEditor’s ChoiceCommunication

Investigation of the Mechanical Properties of Flax Cell Walls during Plant Development: The Relation between Performance and Cell Wall Structure

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Institut de Recherche Dupuy de Lôme (IRDL), Université Européenne Bretagne, CNRS FRE 3744, 56321 Lorient, France
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Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier, CNRS UMR 5508, 34095 Montpellier, France
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Institut de Recherche Dupuy de Lôme (IRDL), Université Européenne Bretagne, CNRS FRE 3744, 56017 Vannes, France
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Kazan Institute of Biochemistry and Biophysics (KIBB), Kazan Scientific Centre, Russian Academy of Sciences, 420111 Kazan, Russia
*
Author to whom correspondence should be addressed.
Fibers 2018, 6(1), 6; https://doi.org/10.3390/fib6010006
Received: 22 December 2017 / Revised: 10 January 2018 / Accepted: 11 January 2018 / Published: 17 January 2018
(This article belongs to the Special Issue Plant Bast Fibers)
The development of flax (Linum usitatissimum L.) fibers was studied to obtain better insight on the progression of their high mechanical performances during plant growth. Fibers at two steps of plant development were studied, namely the end of the fast growth period and at plant maturity, each time at three plant heights. The indentation modulus of the fiber cell wall was characterized by atomic force microscopy (AFM) using peak-force quantitative nano-mechanical property mapping (PF-QNM). Changes in the cell wall modulus with the cell wall thickening were highlighted. For growing plants, fibers from top and middle heights show a loose inner Gn layer with a lower indentation modulus than mature fibers, which exhibit thickened homogeneous cell walls made only of a G layer. The influence of these changes in the fiber cell wall on the mechanical performances of extracted elementary fibers was also emphasized by tensile tests. In addition, Raman spectra were recorded on samples from both growing and mature plants. The results suggest that, for the fiber cell wall, the cellulose contribution increases with fiber maturity, leading to a greater cell wall modulus of flax fibers. View Full-Text
Keywords: fiber crops; flax fibers; cell wall; thickening; AFM (Atomic Force Microscopy); tensile test; Raman spectroscopy fiber crops; flax fibers; cell wall; thickening; AFM (Atomic Force Microscopy); tensile test; Raman spectroscopy
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Goudenhooft, C.; Siniscalco, D.; Arnould, O.; Bourmaud, A.; Sire, O.; Gorshkova, T.; Baley, C. Investigation of the Mechanical Properties of Flax Cell Walls during Plant Development: The Relation between Performance and Cell Wall Structure. Fibers 2018, 6, 6.

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