Trichototaxis songi细胞皮层色素颗粒的显微和亚显微观察  

Observations on the micro-structure and ultrastructure of the cortical pigment granule of a Hypotrichous ciliate,Trichototaxis songi

作　　者：周海英[1] 王正君[1] 生欣[1] 顾福康[1] 

机构地区：[1]华东师范大学生命科学学院,上海200062

出　　处：《华东师范大学学报（自然科学版）》2008年第4期66-70,F0002,F0003,共7页Journal of East China Normal University(Natural Science)

基　　金：国家自然科学基金(130470201)

摘　　要：应用微分干涉相差显微术、扫描电镜和透射电镜显微术等显示了腹毛目纤毛虫Tricho- totaxis songi细胞形态及细胞皮层结构,观察到:细胞皮层存在红色色素颗粒和无色颗粒两种皮层颗粒.皮层色素颗粒与纤毛虫细胞呈现红色有关,它们使细胞的颜色保持不变.作者认为.这些色素颗粒可能已成为细胞皮层结构的基本成分,与纤毛器的功能作用有关;并且它们很可能是一类共生于纤毛虫细胞皮层内及皮层表面的细菌共生体.The cellular morphology and cortical structure of the Hypotrichous ciliate, Trichoto- taxis songi, were investigated by using differential interference contrast microscopy, scanning e- lectron microscopy and transmission electron microscopy. Two types of cortical granules were observed, of which the red pigment granule is involved in the red color of the cell while the other is colorless. It was found that the red pigment granules distribute mainly near the ciliatures he- neath the cortex and its surface. Moreover, these pigment granules also change periodically dur- ing the cell＇s morphogenesis. The reason why the cells can remain red in color after many genera- tions is that the red pigment granules could divide and increase in number to pass down to the new generation. According to the results above, it could be concluded that these pigment gran- ules are basic components of the cortical structure and are closely related to the function of ciliatures. And it could be inferred that the pigment granules might function as a bacterial symbiont of the ciliates both inside and outside of the cortex.

关 键 词：腹毛目纤毛虫 纤毛器 皮层色素颗粒 形态 

分 类 号：Q948[生物学—植物学]