摘要
在植物生长发育过程中,由于局部组织(细胞)的衰退或脱落.存活细胞与衰亡(或脱落)细胞分界壁上的胞间连丝衍变为类外连丝结构。这已先后在小麦胚胎发育、幼胚分化、蒜鳞茎休眠进程中以及玉米根冠组织中得到了论证。前文已曾报道.在玉米根冠细胞生长脱落进程中,脱落细胞与相邻细胞间胞间连丝有被拉伸、断裂形成类外连丝的结构变化.并经药理学试验表明。肌动蛋白和肌球蛋白共同参与了类外连丝通透性的调节。
Using fluorescence and electron microscopy, the uhrastructure and symplastic transport function of Eetodesmata-like (ED-like) were studied in the declining parenchyma cells of Garlic during germination period. The results showed that plasmodesmata ( PD) were gradually stretched and broke into ED-like. The diameter of PD and the diameter of appressed endoplasmic reticulum (AER) in PD underwent a series of changes. F-actin and myosin might take part in the regulation of the symplastic transport of the ED-like.
出处
《分子细胞生物学报》
CSCD
北大核心
2009年第2期165-172,共8页
Journal of Molecular Cell Biology
基金
国家自然科学基金资助项目(项目编号:30070365
30470861)
教育部高等学校博士学科点专项科研基金资助(项目编号:20060086003)~~
关键词
蒜
类外连丝
胞间连丝
肌动蛋白
肌球蛋白
共质传输
Garlic. Ectodesmata-like. Plasmodesmata. Actin. Myosin. Symplastic transport