Shrinkage and fragmentation of the trans-Golgi network in non-meristematic plant cells
Shrinkage and fragmentation of the trans-Golgi network in non-meristematic plant cells
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DOI：
10.4161/psb.6.6.15305
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发表时间：
2011-06
影响因子：
2.9
通讯作者：
B. Kang
中科院分区：
文献类型：
--
作者：
B. Kang
高尔基体产品从跨高尔基体网络 (TGN) 输出，在那里它们被分类并包装成分泌性和网格蛋白包被的囊泡。我们通过电子显微镜/断层扫描检查了拟南芥根小柱细胞和玉米基底胚乳转移细胞中的 TGN 池。在这些细胞类型中，TGN 区室的大小随着它们产生囊泡而减小。从高尔基体释放后，游离的 TGN 区室继续收缩，并且可以看到它们碎裂成囊泡簇。植物 TGN 的收缩及其最终分解表明植物 TGN 不是一种通过膜运输定期补充的持久细胞器。
Golgi products are exported from the trans-Golgi network (TGN) where they are sorted and packaged into secretory and clathrin-coated vesicles. We have examined TGN cisternae in Arabidopsis root columella cells and in maize basal endosperm transfer cells by electron microscopy/tomography. In these cell types, sizes of the TGN compartments decrease as they produce vesicles. After released from the Golgi, free TGN compartments continue to contract and they were seen to fragment into clusters of vesicles. The shrinkage of the plant TGN and its final disassembly suggest that the plant TGN is not a long-lasting organelle that is replenished regularly by membrane trafficking.