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このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/10126/1216

タイトル: Cellular Morphogenesis in Valonia sp.: with Emphasis on the Formation of Lenticular and Rhizoid Cells
著者: Camaya, Alex P.
Okuda, Kazuo
キーワード: cytomorphogenesis
cytoskeleton
immunofluorescent microscopy
lenticular cell
microtubule
protoplasmic aggregation
rhizoid cell
Valonia
雑誌名: 黒潮圏科学
発行日: Feb-2009
出版者: 高知大学大学院総合人間自然科学研究科黒潮圏総合科学専攻黒潮圏科学編集委員会
抄録: The unspecified macrophyte Valonia sp. ined from Bicol Region, the Philippines portrays two distinct types of cell divisions. Higher light intensity induced lenticular cells, whereas lower light intensity produced rhizoid cells, which varied in time and structure. These initiated at stage I where chloroplasts assembled roughly at the indefinite surface of a cell. Microtubules (MTs) at the rotoplasmic assembly appeared to curve and overlap to each other. At stage II a disc-shaped assembly of protoplasm was transformed where radial MT arrays extended from the periphery to the central area of the protoplasmic assembly. In stage III the aggregation of protoplasm stopped, and the average diameter of lenticular cells was ca. 1 mm whereas rhizoid cells were ca. 0.1 mm in diameter. Short but dense cortical MTs were arranged randomly all over the protoplasmic aggregations, followed by the depolymerization of MTs. In stage IV septum walls formed to divide lenticular cells or rhizoid cells from the mother cells. Densely crammed MTs were evenly dispersed all over lenticlular and rhizoid cells. Then in stage V juvenile cells started to puff out in lenticular cells and likewise elongated for rhizoid cells. New parallel arrays of MTs were formed from the base towards the apex portion of these new cells. Furthermore, the maximum attainable height measured about 2 mm in lenticular cells, while it was about 1.4 mm for rhizoid cells. Lenticular and rhizoid cells tended to develop near the zones of both ends of mother cells.
URI: http://hdl.handle.net/10126/1216
出現コレクション:01 黒潮圏科学=Kuroshio Science   1(2007)-

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