Formation of Perforation Plates and Bordered Pits in Differentiating Vessel Elements

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概要

• 論文の詳細を見る

• この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。Disintegration processes of end walls and pit membranes in later stage of maturation of the vessel elements were observated with electron and optical microscopes using a poplar tree (Populus nigra L. var italica KOEHNE). The major components of the end walls may be disintegrated enzymatically from their surfaces, but disintegration of the minor components (probably a part of cellulose micro-fibrils) may be achieved by the transpiration streams. In the case of intervessel pit membranes, it seems that only the non-cellulosic substances may be removed enzymatically. Parenchyma cells adjacent to vessels, having protective layers, seem to be got rid of the enzymatical attack through the vessel-parenchyma pit membranes. Considering the observation results by O'BRIEN (1970), it seems likely that the disintegration of unlignified cell walls is a general phenomenon that occurs later in the autolysis of the vessel elements.

• 京都大学の論文
• 1970-12-19

著者

• Kishima Tsuneo

  Division Of Wood Biology Wood Research Institute

• YATA Shigeki

  Laboratory of Wood Materials, Faculty of Agriculture, Kyoto Prefectural University

• ITOH Takao

  Division of Wood Biology, Wood Research Institute

• Itoh Takao

  Division Of Wood Biology Wood Research Institute

• Yata Shigeki

  Laboratory Of Wood Materials Faculty Of Agriculture Kyoto Prefectural University

関連論文

• Artificial Modification of Bordered Pits in Softwoods : (1) Treatment with Sodium Hydroxide Solution
• Formation of Perforation Plates and Bordered Pits in Differentiating Vessel Elements
• On the Ultrastructure of Dormant and Active Cambium of Conifers
• Fine Structure of the Membranes and Organelles in Parenchyma Cells of Poplar Shoot Observed by Freeze Etching Technique
• Fine Structure and Formation of Cell Wall of Developing Cotton Fiber
• Fine Structure of Secondary Wall Thickening and a Role of Microtubules in Primary Xylem Cells of Poplar

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