Fine Structure of Secondary Wall Thickening and a Role of Microtubules in Primary Xylem Cells of Poplar

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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。Secondary wall thickening and organization of the cytoplasm during development of primary xylem cells of poplar were investigated by sectioning and freeze etching technique. Microtubules usually aggregate only above the helical thickenings or bands throughout the the development of primary xylem cells but not above the areas where no secondary wall deposition occurs, and run parallel to the micronbrils within the bands. In view of their general distribution throughout cell organelles, plasmalemma particles of primary xylem cells visible by freeze etching technique are questionable to be considered as the enzyme complex involved in the synthesis and orientation of cellulose micronbrils of secondary wall. Thus, microtubules may be considered as the only organella to determine the orientation of micronbrils. A possible association of microtubules and Golgi-derived vesicles during wall thickening is assumed by the fact that the position and alignment of microtubules are closely related to those of Golgi-derived vesicles. It seems that the microtubules play a part for the incorporation of Golgi-derived vesicles .into the destined site of cell wall.

• 京都大学の論文
• 1974-08-31

著者

• Itoh Takao

  Division Of Wood Biology Wood Research Institute

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• 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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