Journal ArticleDOI
Distribution of lignin in normal and tension wood
TLDR
In this article, the distribution of lignin in normal and tension wood of four hardwood species was studied by examination in the electron microscope of the skeleton remaining after removal of the polysaccharides with hydrofluoric acid.Abstract:
The distribution of lignin in normal and tension wood of four hardwood species has been studied by examination in the electron microscope of the lignin skeletons remaining after removal of the polysaccharides with hydrofluoric acid. In normal wood fibers, the S1 had a higher lignin concentration than the S2 layer, which was not as highly lignified as in conifer tracheids. Vessels had a high concentration of lignin in both normal and tension wood, while the extent of lignification of the parenchyma was variable.read more
Citations
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Journal ArticleDOI
Lignification and lignin topochemistry - an ultrastructural view.
TL;DR: The ultrastructural aspects of cell wall lignification and lignin topochemistry are discussed, which results in the filling of pores within the carbohydrate matrix following a sequence from the outer regions of the wall towards the lumen.
Journal ArticleDOI
Unravelling cell wall formation in the woody dicot stem.
TL;DR: Populus is presented as a model system for the study of wood formation and high-resolution analysis of auxin distribution across cambial region tissues suggests that auxin provides positional information for the exit of cells from the meristem and probably also for the duration of cell expansion.
Journal ArticleDOI
Cellulose microfibril aggregates and their size variation with cell wall type
TL;DR: In this article, a combination of FEM and environmental scanning electron microscopy was used to visualize the organization of macrofibrils in different cell wall types comparing normal and reaction wood of radiata pine and poplar as examples of a typical softwood and hardwood.
Journal ArticleDOI
On the fine structure of bamboo fibres
N. Parameswaran,Walter Liese +1 more
TL;DR: In this article, a model for the thick-walled bamboo fiber is presented with a new terminology for the various lamellae, and the results are discussed in relation to earlier data on wall structure and development.
Journal ArticleDOI
Distribution of syringyl and guaiacyl moieties in hardwoods as indicated by ultraviolet microscopy
Y. Musha,D. A. I. Goring +1 more
TL;DR: In this paper, ultraviolet absorption spectra were determined microscopically for the different morphological regions of fourteen hardwood species and the woods were chosen to represent a range of methoxyl to carbon nine ratio (MeO/C9) in their lignins.
References
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Journal ArticleDOI
The distribution of lignin in sprucewood as determined by ultraviolet microscopy
TL;DR: The distribution of lignin in black spruce has been determined quantitatively by the study of 05 μm transverse sections in a UV microscope as mentioned in this paper, showing that 72% of the total Lignin content was in the secondary wall leaving only 28% in the compound middle and cell corner middle lamella regions.
Journal ArticleDOI
The Location of Guaiacyl and Syringyl Lignins in Birch Xylem Tissue
B. J. Fergus,D. A. I. Goring +1 more
TL;DR: In this article, it was shown that the lignin associated with the vessel secondary wall and middle lamella of birch xylem is composed predominandy of guaiacylpropane units.
Journal ArticleDOI
The distribution of lignin in Birch wood as determined by ultraviolet microscopy.
B. J. Fergus,D. A. I. Goring +1 more
TL;DR: In this paper, the distribution of lignin in black spruce has been determined quantitatively by the study of 0.5 μm transverse sections in a UV microscope, showing that 72% of the total Lignin was in the secondary wall leaving only 28% in the compound middle and cell corner middle lamella regions.
Journal ArticleDOI
The application of ultraviolet microscopy to the distribution of lignin in wood description and validity of the technique
TL;DR: In this article, a method was developed for the determination of lignin distribution in the wood cell wall by ultraviolet microscopy, which incorporates some important advances on previus applications of UV microscopy to the study of Lignin distributions.