Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Poorly and Non-Lignified Regions in the Middle Lamella Cell Corners of Birch (Betula Verrucosa) and Other Wood Species

Poorly and Non-Lignified Regions in the Middle Lamella Cell Corners of Birch (Betula Verrucosa)... Middle lamella cell corners in birch wood frequently show a non-homogeneous structure and the existence of less dense (i. e electron- lucent) regions. Using a variety of cytochemical, immunological and mercurisation techniques in conjunction with electron microscopy, the distribution of lignin within these regions was studied. Results showed the regions to have a variable lignin content consistent with intermediate and incomplete stages of lignification. Observations on corner regions partially degraded by decay fungi further showed the electron-lucent regions to possess an elevated level of non-lignified components (presumably carbohydrates) with a fibrillar type structure. Examination of a range of other wood species (including hard- and softwoods) by TEM showed similar structural variations in middle lamella cell corner homogeneity suggesting a common feature. It is considered that this natural variation in cell corner density and lignification may lead to errors when lignin concentrations of cell corners are used in ratio estimates of lignin in secondary cell wall layers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png IAWA Journal Brill

Poorly and Non-Lignified Regions in the Middle Lamella Cell Corners of Birch (Betula Verrucosa) and Other Wood Species

IAWA Journal , Volume 12 (1): 14 – Jan 1, 1991

Loading next page...
 
/lp/brill/poorly-and-non-lignified-regions-in-the-middle-lamella-cell-corners-of-f7x1V0iq4Z

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0928-1541
eISSN
2294-1932
DOI
10.1163/22941932-90001206
Publisher site
See Article on Publisher Site

Abstract

Middle lamella cell corners in birch wood frequently show a non-homogeneous structure and the existence of less dense (i. e electron- lucent) regions. Using a variety of cytochemical, immunological and mercurisation techniques in conjunction with electron microscopy, the distribution of lignin within these regions was studied. Results showed the regions to have a variable lignin content consistent with intermediate and incomplete stages of lignification. Observations on corner regions partially degraded by decay fungi further showed the electron-lucent regions to possess an elevated level of non-lignified components (presumably carbohydrates) with a fibrillar type structure. Examination of a range of other wood species (including hard- and softwoods) by TEM showed similar structural variations in middle lamella cell corner homogeneity suggesting a common feature. It is considered that this natural variation in cell corner density and lignification may lead to errors when lignin concentrations of cell corners are used in ratio estimates of lignin in secondary cell wall layers.

Journal

IAWA JournalBrill

Published: Jan 1, 1991

Keywords: Birch wood; decay fungi; lignin distribution; middle lamella cell corner; lignin antisera; immunocytochemistry; lignin mercurisation; TEM X-ray microanalysis

There are no references for this article.