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首页> 外文期刊>Proceedings of the Arkansas Academy of Science >Examination of the Cell Wall of Micrasterias radiosa Var. radiosa (Conjugatophyceae) by Transmission and Scanning Electron Microscopy
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Examination of the Cell Wall of Micrasterias radiosa Var. radiosa (Conjugatophyceae) by Transmission and Scanning Electron Microscopy

机译：放射状微囊藻细胞壁的检查。透射电镜和透射电镜观察

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摘要

The cell wall of Micrasterias radiosa var. radiosa Ralfs 1848 (Conjugatophyceae) was examined by transmission and scanning electron microscopy. Previous electron microscopy of this taxon has not been performed; thus these are new observations. The cell wall was recognized to be of the Cosmarium type with complex pores external to the plasma membrane that penetrate the secondary wall and with ornamentation arising from the secondary wall. Subdivided regions of the pore apparatus, the pore head, pore bulb, connecting pore channel, and pore depression were detected. Pores of type 4 were located in the isthmal region and at the division of several quaternary lobes. Previously undescribed ornamentation of an asymmetrical swelling on each semicell face was observed. The Cosmarium type cell wall and pores of type 4 are consistent with other investigations upon Micrasterias taxa. The presence of the asymmetrical swelling on each semicell face necessitates taxonomic revision of Micrasterias radiosa var. radiosa.
机译：Micrasterias radiosa var的细胞壁。通过透射和扫描电子显微镜检查了radiosa Ralfs 1848（结菌科）。尚未对该分类单元进行电子显微镜检查；因此，这些是新观察。认为细胞壁是the型的，其质膜外部的复杂孔穿透了次壁，并且具有次壁产生的装饰。检测孔装置的细分区域，孔头，孔球，连接孔通道和孔压低。类型4的毛孔位于地峡区域和几个第四纪裂片的分界处。观察到以前未描述的在每个半单元面上的不对称肿胀的装饰。 s型细胞壁和4型孔与其他分类学研究一致。每个半细胞面上存在不对称的肿胀，需要对放射线微囊藻进行分类学修订。 radiosa。

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