关于水螅刺丝囊的结构与排放的电子显微镜观察
Electron microscope observations on the structure and discharge of the stenotele of hydra.
作者信息
Mattern C F, Park H D, Daniel W A
出版信息
J Cell Biol. 1965 Dec;27(3):621-38. doi: 10.1083/jcb.27.3.621.
Abstract
Sections of the stenotele type of nematocyst of Chlorohydra hadleyi have revealed that the stenotele, upon firing, completely everts its stylets and spines and the long, thin tubule, much as the eversion of the tubule of the nematocyst of the jewel anemone (Picken, 1953; Robson, 1953). Alternative mechanisms for supplying the energy necessary to forcefully discharge the stenotele contents are discussed as well as the possible significance of several regions containing highly ordered periodic structure. The origin of nematocysts as kinetosomal derivatives is discussed as a possibility suggested by the symmetry of the stenotele contents and the structure, location, and function of the cnidocil.
摘要
对哈德利绿水螅（Chlorohydra hadleyi）的刺丝囊（stenotele 类型）切片的研究表明，刺丝囊在发射时会完全外翻其口针、刺和细长的小管，这与宝石海葵（jewel anemone）刺丝囊的小管外翻情况类似（皮肯，1953 年；罗布森，1953 年）。文中还讨论了为强力排出刺丝囊内容物提供所需能量的其他机制，以及几个含有高度有序周期性结构区域的可能意义。文中探讨了刺丝囊作为动体衍生物的起源，这是由刺丝囊内容物的对称性以及刺丝囊窝的结构、位置和功能所暗示的一种可能性。
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