TITLE

Diurnal difference in the amount of immunogold-labeled glucomannans detected with field emission scanning electron microscopy at the innermost surface of developing secondary walls of differentiating conifer tracheids

AUTHOR(S)
Hosoo, Yoshihiro; Yoshida, Masato; Imai, Takanori; Okuyama, Takashi
PUB. DATE
October 2002
SOURCE
Planta;Oct2002, Vol. 215 Issue 6, p1006
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The differences between cell wall formation at night, when the tangential strain used as an index of the volumetric changes in differentiating cells is high, and in the day, when the tangential strain is low, were investigated in Cryptomeria japonica D. Don. Samples containing differentiating xylem were collected at 0500 hours and 1400 hours. The innermost surface of developing secondary walls in differentiating tracheids was observed by field emission scanning electron microscopy. In the specimens collected at 0500 hours, an amorphous material was observed covering the cellulose microfibrils. The cell wall surface was immunogold-labeled with an anti-glucomannan antiserum. After chlorite treatment, the amorphous material disappeared, and immunogold labeling was rarely observed. In the specimens collected at 1400 hours, cellulose microfibrils were clearly evident, and amorphous material and immunogold labeling were rarely observed. We thus confirmed that much amorphous material containing glucomannans is observed at night, when differentiating tracheids are turgid due to the increase in their volume, while the amorphous material was rarely observed during the day when cellulose microfibrils are clearly observed.
ACCESSION #
16126293

 

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