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Holzforschung

International Journal of the Biology, Chemistry, Physics, and Technology of Wood

Editor-in-Chief: Faix, Oskar

Editorial Board Member: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Salmen, Lennart / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Berry, Richard / Burgert, Ingo / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gellerstedt, Göran / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Heitner, Cyril / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Kleen, Marjatta / Koch, Gerald / Lachenal, Dominique / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Pizzi, Antonio / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Schwanninger, Manfred / Sipilä, Jussi / Tamminen, Tarja / Viikari, Liisa / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

8 Issues per year


IMPACT FACTOR 2013: 2.339
Rank 8 out of 64 in category Forestry and 2 out of 21 in category Materials Science, Paper & Wood in the 2013 Thomson Reuters Journal Citation Report/Science Edition

SCImago Journal Rank (SJR): 0.880
Source Normalized Impact per Paper (SNIP): 1.136

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Periodicity as a Factor in the Generation of Isotropic Compressive Growth Stress Between Microfibrils in Cell Wall Formation during a Twenty-Four Hour Period

Masato Yoshida / Yoshihiro Hosoo / Takashi Okuyama

Citation Information: Holzforschung. Volume 54, Issue 5, Pages 469–473, ISSN (Print) 0018-3830, DOI: 10.1515/HF.2000.079, June 2005

Publication History

Published Online:
2005-06-01

Summary

Field emission scanning electron microscopy and energy-dispersive X-ray microanalysis were used to investigate the generation of growth stress in connection with the deposition of cell wall materials along the innermost surface of radial walls during secondary wall formation of differentiating tracheids of Cryptomeria japonica. Samples were collected when the turgor pressure of the tree was low (16:00 h), and when the pressure was high (6:00 h). In samples collected at 16:00 h, cellulose microfibrils deposited on the innermost surface of radial walls were clearly evident and amorphous material was rarely found. Conversely, in samples collected at 6:00 h, cellulose microfibrils were rarely observed and the amorphous material was prevalent. Cellulose microfibrils were evident, however, after removing the amorphous material with chlorite. The concentration of potassium on the inner surface of radial walls was greater at 6:00 h than at 16:00 h. After chlorite treatment, the concentration of potassium measured in the samples collected at 6:00 h decreased to a level equivalent to that in samples collected at 16:00 h and thus potassium was found to be associated with the amorphous material on the cellulose microfibrils. The amorphous material is probably a matrix of hemicellulose and monolignol, material that is abundant on the inner surface of developing cell walls, especially during expansion (as a result of high turgor pressure) of differentiating tracheids. A matrix of hemicellulose and lignin deposited in the expanded gaps between cellulose microfibrils and daily expansion of the gaps probably produces an isotropic compressive stress (growth stress). This paper demonstrates periodicity in cell wall formation as a result of the cycles of compressive growth in the differentiating cell wall.

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