The cell wall composition of Norway spruce earlywood and latewood revisited
| Autor: | Maria Fredriksson, Nanna Bjerregaard Pedersen, Lisbeth Garbrecht Thygesen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
040101 forestry
0106 biological sciences biology fungi Xylem Forestry Picea abies 04 agricultural and veterinary sciences biology.organism_classification 01 natural sciences Cell wall chemistry.chemical_compound chemistry Botany Tracheid 0401 agriculture forestry and fisheries Lignin General Materials Science Hemicellulose Middle lamella Secondary cell wall 010606 plant biology & botany |
| Zdroj: | Frederiksson, M, Bjerregaard Pedersen, N & Thygesen, L G 2018, ' The cell wall composition of Norway spruce earlywood and latewood revisited ', International Wood Products Journal, bind 9, nr. 2, s. 80-85 . https://doi.org/10.1080/20426445.2018.1479680 |
| ISSN: | 2042-6453 2042-6445 |
| Popis: | The xylem of gymnosperm trees consists mainly of tracheids, which generally have larger radial diameters and thinner walls in earlywood than in latewood. Information on possible chemical differences is limited, but according to a few studies, earlywood normally contains more lignin relative to cellulose than latewood. However, for methods giving results per gram dry matter, this result is expected since a larger part of the earlywood cell wall material consists of lignin-rich middle lamella. In this study, we used Raman microspectroscopy to assess relative biopolymer composition of earlywood and latewood secondary cell walls from mature sapwood of Norway spruce (Picea abies (L.) Karst.). In addition, infrared spectroscopy of isolated earlywood and latewood from the same growth rings as well as additional growth rings was performed. Both methods showed significantly higher relative lignin content in the earlywood which confirms results from earlier studies. |
| Databáze: | OpenAIRE |
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