Envelope formation and structure in the Euglenoid genus Trachelomonas
Envelope formation and structure in the Euglenoid genus Trachelomonas
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裸藻属的包膜形成和结构
DOI：
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
G. Leedale
中科院分区：
文献类型：
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作者：
G. Leedale
比较描述了囊裸藻属几种囊膜形成的超微结构细节。T.椭圆形变种斑点花它是一个“皮肤”。接下来，在皮肤和细胞表面之间产生纤维层。氢氧化铁和锰的化合物沉淀在这内层，形成一个厚的信封，物种的具体大小，形状，取向和衣领的特点。原来的皮肤就消失了。类似的事件发生在其他物种的信封形成过程中，但差异存在于该过程的细节和成熟信封的结构和复杂性。T.石螺具有纤维状内层和颗粒状沉淀，但产生具有蜂窝状中心层的复杂的三层外壳。这是比较表面上类似的三层信封的一个未命名的物种从野生收集，和细微的差异，超微结构。
Ultrastructural details of envelope formation are described comparatively for several species of the genus Trachelomonas. The first-formed envelope component in T. oblonga var. punctata Prings. is an external “skin”. Next, a fibrillar layer is produced between the skin and the cell surface. Ferric hydroxide and manganese compounds are precipitated on this inner layer to form a thick envelope, species-specific in size, shape, ornamentation and collar characteristics. The original skin is then lost. A similar sequence of events occurs during envelope formation in other species, but differences exist in the details of the process and in the texture and complexity of construction of the mature envelopes. T. volvocina Ehrenb. has a fibrillar inner layer and granular precipitation, but produces a complex three-layered envelope with a honeycombed central layer. This is compared with the superficially similar three-layered envelope of an unnamed species from a wild collection, and subtle differences in ultrastruc...