Chemical Composition in Juvenile and Mature Wood of Branch and Main Trunk of Leucaena leucocephala (Lam.) de Wit

Secondary growth is the most dynamic developmental aspect during the terrestrialization of plants. The development of secondary xylem tissue composed of thick-walled cells with characteristic changes in its structure and chemistry facilitates the growth and development of woody plants. In the presen...

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Bibliographic Details
Published in:Plants (Basel) 2023-11, Vol.12 (23), p.3977
Main Authors: Sivan, Pramod, Rao, Karumanchi S, Rajput, Kishore S
Format: Article
Language:English
Subjects:
Acids
Biochemical analysis
cell wall polysaccharides
Cell walls
Cellulose
Chemical composition
Degradability
Leucaena
Leucaena leucocephala
Lignin
Magnetic resonance spectroscopy
Mechanical properties
NMR spectroscopy
Polysaccharides
Raw materials
Saccharides
Spectrum analysis
Trees
Wood
Woody plants
Xylem
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Summary:Secondary growth is the most dynamic developmental aspect during the terrestrialization of plants. The development of secondary xylem tissue composed of thick-walled cells with characteristic changes in its structure and chemistry facilitates the growth and development of woody plants. In the present study, the chemical composition of the secondary xylem of juvenile and mature wood from the branch and main trunk of , has been investigated and the differences established. The biochemical analysis of different cell wall components in the mature wood of the main trunk revealed high holocellulose and α-cellulose and less lignin content in the juvenile wood while its syringyl/guaiacyl (S/G) ratio was less than for the mature wood. As compared to the branch xylem, concentration of cell wall polysaccharides and lignin content was higher in both juvenile and mature wood collected from the main trunk. Thioacidolysis and GC-MS analysis of wood lignin from juvenile and mature wood showed that an increased concentration in lignin content in mature wood is associated with a corresponding increase in S/G ratio. The structural information of the acetylated lignin was investigated by H NMR spectroscopy. Our results indicate that the mature wood from the main trunk is superior in pulp yielding and lignin degradability as compared to the juvenile wood of the branch and trunk.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants12233977