荧光染色观察钝节拟丽藻中无丝分裂的研究  

Observations with Fluorescent Staining of Amitosis in Nitellopsis obtuse

作　　者：邓禹[1] 傅华龙[1] 卿人韦[1] 常红叶[1] 周旭丹[1] 邓丽娟[1] 黎晓红[1] 兰利琼[1] 

机构地区：[1]四川大学生命科学学院,成都610064

出　　处：《四川大学学报（自然科学版）》2006年第1期196-199,共4页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金资助(30470143);四川大学青年科学基金(200320)

摘　　要：用DAPI荧光染色法对处于不同生长时期钝节拟丽藻(Nitellopsis obtuse)的节间,小枝,苞片,节部及假根中细胞的细胞核的分裂方式进行了研究,发现无丝分裂是钝节拟丽藻藻体细胞核的唯一分裂方式.在细胞核无丝分裂过程中,染色质不发生浓缩,不形成染色体,核膜不解体,核的分裂部位不定,产生的子核大小,形状各异.The nucleus divisions were observed by using DAPI staining the different cells of Nitellopsis obtuse included internodal cells, branch cells, bract cells, nodal cells and rhizoid cells which in different periods. The results showed that amitosis is the only division in Nitellopsis obtuse. In the process of amitotic divisions , the nucleus are have no chromatin condensation , the existence of chromosomes and the disappearance of nuclear membrane. The positions of the nucleus cleaving are uncertain. The shape and size of the new nucleus after cleaved are different.

关 键 词：无丝分裂 钝节拟丽藻 细胞核 荧光染色 

分 类 号：Q943[生物学—植物学]