Ultrastructure of Nucleomorph Division in Species of Cryptophyceae and its Evolutionary Implications
Ultrastructure of Nucleomorph Division in Species of Cryptophyceae and its Evolutionary Implications
复制标题
隐藻类核型分裂的超微结构及其进化意义
DOI：
--
复制
发表时间：
1982
期刊：
影响因子：
--
通讯作者：
A. Greenwood
中科院分区：
文献类型：
--
作者：
S. Morrall;A. Greenwood
一个超微结构的研究，核形在Cryptophyceae的物种揭示了方面的分裂以前没有报道，包括形成一个结构化的纤维系统，这伴随着有序的对齐，复制和分离成两组的染色颗粒通常特征的每个核形。尽管有报道指出核形中存在核酸，但分裂过程似乎与任何已知的核分裂形式不同。然而，存在的可能性是，核形物代表了原始祖先红藻内共生体的核，其形式如此古老，以至于其核分裂与任何其他已知的有丝分裂形式都没有相似之处。
An ultrastructural study of nucleomorphs in species of Cryptophyceae revealed aspects of division not previously reported, including the formation of a structured fibrous system, which accompanies the ordered alignment, duplication and separation into two groups of the densely staining particles typically characteristic of each nucleomorph. Despite reports indicating the presence of nucleic acids in the nucleomorph, the division process appears to be unlike any known form of nuclear division. However, the possibility exists that the nucleomorph represents the nucleus of a primitive ancestral red algal endosymbiont displaying a form so antique that its nuclear division bears no resemblance to any other known form of mitotic division.