The change of cell division system through the life cycle of mosses, liverworts and hornworts.

研究了苔藓植物（苔藓、苔类植物和角苔类植物）生命周期中有丝分裂系统的变化。地衣的粗糖原丝体中存在皮质微管和前期带，而苔藓的丝状原丝体中不存在这些MT系统。此外，综述了复杂菌体肝细胞减数分裂系统的多样性，并通过分子系统发育分析揭示了复菌体肝细胞减数分裂系统的系统发育分布和进化。

Changes of the mitotic division system through the life cycle of bryophytes (mosses, liverworts and hornworts) were investigated. The occurrence of cortical micrtubules and preprophase band in grobose protonema of liverworts is in stark contrast to the absence of these MT systems in filamentous protonema of mosses. In addition, diversity in meiotic division system of complex thalloid liverworts were summarized and molecular phylogenetic analyses revealed the phylogenetic distribution and evolution of meiotic division system of marchantialean liverworts.