Cleavage furrow formation in a telolecithal egg (Loligo pealii). I. Filaments in early furrow formation.
Cleavage furrow formation in a telolecithal egg (Loligo pealii). I. Filaments in early furrow formation.
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DOI：
10.1083/jcb.41.3.894
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发表时间：
1969-06
期刊：
影响因子：
--
通讯作者：
Arnold JM
中科院分区：
文献类型：
--
作者：
Arnold JM
用电子显微镜观察了石斑鱼端卵第一裂沟的形成。在真正的沟槽形成之前，质膜下方形成一条致密的丝状带，来自似乎来自高尔基体的膜层致密小体。鸡蛋表面被抛入许多平行于沟槽的纵向褶皱中，最终融入其中。这些纵向褶皱包含一个由小管和小泡组成的网络。通常，多泡小体与皱纹相关，并可能形成小管和小泡的网络。显然，两个新的卵裂球之间的膜的一部分来自于纵向褶皱的表面。从丝状带的角度讨论了收缩成沟的理论。
Formation of the first cleavage furrow in the telolecithal egg of Loligo was studied with the electron microscope. Before the actual furrow forms, a dense filamentous band develops below the plasma membrane from membrane-bounded dense bodies which appear to be Golgi-derived. The egg surface is thrown into a number of longitudinal folds which parallel the furrow and eventually become incorporated into it. These longitudinal folds contain a network of tubules and vesicles. Frequently, multivesiculate bodies are associated with the furrow and possibly give rise to the network of tubules and vesicles. Apparently part of the membrane between the two new blastomeres is derived from the surface of the longitudinal folds. The theory of furrow formation by contraction is discussed in light of the filamentous band.