Titre :

Comparative Analysis of G-Layers in Bast Fiber and Xylem Cell Walls in Flax Using Raman Spectroscopy

Auteur(s) :

Blervacq, Anne-Sophie [Auteur]
Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576
Moreau, Myriam [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Duputié, Anne [Auteur]
Évolution, Écologie et Paléontologie (Evo Eco Paleo) - UMR 8198
Hawkins, Simon [Auteur]
Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576

Titre de la revue :

Biomolecules

Nom court de la revue :

Biomolecules

Numéro :

13

Pagination :

435

Éditeur :

MDPI AG

Date de publication :

2023-02-24

ISSN :

2218-273X

Mot(s)-clé(s) en anglais :

bast fibers
Raman chemical imaging
flax
G-layer
gravitropic stress
confocal Raman spectroscopy
tension wood
opposite wood

Discipline(s) HAL :

Sciences du Vivant [q-bio]

Résumé en anglais : [en]

In a response to gravitropic stress, G-layers (gelatinous layers) were deposited in xylem cell walls of tilted flax plants. G-layers were produced in both tension wood (upper side) as expected but were also observed in ...
Lire la suite >In a response to gravitropic stress, G-layers (gelatinous layers) were deposited in xylem cell walls of tilted flax plants. G-layers were produced in both tension wood (upper side) as expected but were also observed in opposite wood (lower side). Raman spectral profiles were acquired for xylem G-layers from the tension and opposite side as well as from the G-layer of bast fibers grown under non-tilted conditions. Statistical analysis by principal component analysis (PCA) and partial least square-discriminant analysis (PLS-DA) clearly distinguished bast fiber G-layers from xylem G-layers. Discriminating bands were observed for cellulose (380–1150–1376 cm–1), hemicelluloses (517–1094–1126–1452 cm–1) and aromatics (1270–1599–1658 cm–1). PCA did not allow separation of G-layers from tension/opposite-wood sides. In contrast, the two types of xylem G-layers could be incompletely discriminated through PLS-DA. Overall, the results suggested that while the architecture (polymer spatial distribution) of bast fibers G-layers and xylem G-layers are similar, they should be considered as belonging to a different cell wall layer category based upon ontogenetical and chemical composition parameters.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

NOuvelles informations sur l'effet d'un STRESS hydrique sur la PAROI cellulaire

Établissement(s) :

Université de Lille
CNRS

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
• Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576

Équipe(s) de recherche :

Fibres végétales

Date de dépôt :

2023-04-03T13:11:18Z
2023-04-05T06:25:27Z
2023-04-05T06:27:33Z