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Cell wall polymer distribution in bamboo visualized with in situ imaging FTIR
International Center for Bamboo and Rattan, China; SFA and Beijing Co-built Key Laboratory of Bamboo and Rattan Science & Technology, China.
International Center for Bamboo and Rattan, China; SFA and Beijing Co-built Key Laboratory of Bamboo and Rattan Science & Technology, China.
Fujian Agriculture and Forestry University, China.
RISE Research Institutes of Sweden, Bioeconomy and Health, Biorefinery and Energy.ORCID iD: 0000-0003-3534-1107
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2021 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 274, article id 118653Article in journal (Refereed) Published
Abstract [en]

To better understand the high recalcitrance of bamboo during bioconversion, the fine spatial distribution of polymers in bamboo was studied with Imaging FTIR microscopy under both transmission and ATR modes, combined with PCA data processing. The results demonstrated that lignin, xylan and hydroxycinnamic acid (HCA) were more concentrated in the fibers near the xylem conduit, while cellulose was evenly distributed across the whole fiber sheath. PCA processing produced a clear separation between bamboo fibers and parenchyma cells, indicating that the parenchyma cells contains more pectin and HCA than fibers. It also demonstrated that cellulose, xylan and S-lignin were concentrated most heavily in bamboo fiber secondary cell walls, while G-lignin, pectin and HCA were found more in the compound middle lamella. The revealed information regarding polymer distribution is of great significance for better understanding of the inherent design mechanism of plant cell wall and its efficient utilization. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2021. Vol. 274, article id 118653
Keywords [en]
Cell wall polymers, Micro-FTIR imaging, Phyllostachys pubescens, Spatial distribution, Visualization, Bamboo, Cells, Cellulose, Cytology, Data handling, Fibers, Lignin, Bamboo fibres, FTIR, Hydroxycinnamic acids, Micro-FTIR, Parenchyma cells, Polymer distribution, Situ imaging, Data Processing
National Category
Wood Science
Identifiers
URN: urn:nbn:se:ri:diva-56674DOI: 10.1016/j.carbpol.2021.118653Scopus ID: 2-s2.0-85115095287OAI: oai:DiVA.org:ri-56674DiVA, id: diva2:1614095
Note

 Funding details: National Natural Science Foundation of China, NSFC, 31770600; Funding details: China Scholarship Council, CSC; Funding text 1: We would like to thank the National Science Foundation of China (Project No: 31770600 ) for their financial support for this research. And we would also like to thank the Chinese Scholarship Council for the visiting scholar program.

Available from: 2021-11-24 Created: 2021-11-24 Last updated: 2021-11-24Bibliographically approved

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Salmén, Lennart

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