The Role of the Spindle Body in Unequal Division of the Grasshopper Neuroblast

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概要

• 論文の詳細を見る

• The relationship between inequality of division and behavior of the spindle body was studied in neuroblasts of the grasshopper, Chortophaga viridifasciata. The volume of mother neuroblasts at metaphase and that of daughter neuroblasts at early telophase showed considerable variation, whereas the ganglion cell volume was nearly constant. During anaphase, the spindle body elongated actively and changed its position to the ganglion cell side, until its ganglion cell side pole attached to the cell cortex. At the stage of furrowing initiation, the spindle body showed almost the same length regardless of cell size. Since the furrow is always formed across the equator of the spindle, the distance between the furrow plane and ganglion cell side surface was approximately equal to half the spindle length and consequently, ganglion cells of a definite size were formed. A small spindle induced by ultraviolet irradiation at middle anaphase produced an unusually small ganglion cell. From these observations, the size of the spindle body is considered to play an important role in the determination of ganglion cell size.

• 社団法人日本動物学会の論文
• 1981-03-25

著者

• Yamashiki Naoko

  Laboratory Of Biology The College Of Dairying

関連論文

• Microtubule Dynamics and Distribution of γ-Tubulin in Male Germ Cells of Bombyx mori (Lepidoptera)
• The Role of the Spindle Body in Unequal Division of the Grasshopper Neuroblast

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