摘要
根据本实验室对贾第虫（Ｇｉａｒｄｉａ）细胞核的观察、研究，并参阅有关文献及电镜照片报道，发现双滴虫类的细胞核有两个极原始的特征：１）还没有进化出核仁；２）核被膜尚不完整。它们在核分裂方面也是极原始的。据此，作者建议把Ｃａｖａｌｉｅｒ—Ｓｍｉｔｈ（１９８９）提出的源真核生物（Ａｒｃｈｅｚｏａ）超界中的源真核生物界划分为两个界，即以双滴虫门为代表的前源真核生物（Ｐｒｏａｒｃｈｅｚｏａ）界和包含目前所知的其他源真核生物的后源真核生物（Ｍｅｔａｒｃｈｅｚｏａ）界。
According to the investigations of the nucleus of Giardia in our laboratory and the electron-microscopical photographs of diplomonads and reports in literature, I found that diplomonad nuclei had no nucleolus and that the nuclear envelope was incomplete with large nuclear envelope openings. The ways of their nuclear division ware also all primitive. These primitive characteristics of the nucleus distinguish diplomonads from all other presentknown archezoa. Therefore, I would suggest to divide kingdom Archezoa (Cavalier-Smith,1989) into two kingdoms, Proarchezoa (including diplomonads) and Metarchezoa. Both belong to superkingdom Archezoa(Cavalier-Smith, 1989).
基金
国家自然科学基金
关键词
生物
分界
前源真核生物界
分类学
Archezoa, Kingdom Proarchezoa, Kingdom Metarchezoa, The absence ofnucleolus. Nuclear envelople opening
