ARRAYS OF PLASMA-MEMBRANE ROSETTES INVOLVED IN CELLULOSE MICROFIBRIL FORMATION OF SPIROGYRA
ARRAYS OF PLASMA-MEMBRANE ROSETTES INVOLVED IN CELLULOSE MICROFIBRIL FORMATION OF SPIROGYRA
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DOI：
10.1007/bf00393174
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发表时间：
1983-01-01
期刊：
影响因子：
4.3
通讯作者：
HERTH, W
中科院分区：
文献类型：
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作者：
HERTH, W
采用冷冻破裂技术研究了丝状藻丝绵藻（Spirogyra sp.）细胞壁形成过程中的细胞壁结构和质膜颗粒排列。细胞壁由厚的外黏液层和带状微原纤维的多层内壁组成。内壁显示3种不同方向的微原纤维：在其外部随机取向，其次是平行的微原纤维轴向束，以及内层的5-6个平行的微原纤维带，它们具有横向或斜向取向。质膜的质外断裂面显示微纤维印记，颗粒相对较少，微纤维带印记末端有六角形排列的末端复合物。质膜的质面断裂面含有丰富的颗粒。在一些地方，它揭示了六边形的玫瑰阵列。这些玫瑰花结是最好的演示与双副本技术。这些关于zynematacean藻类Spirogyra花环阵列的发现与已发表的desmidiacean藻类Micrasterias和Closterium的数据进行了详细的比较。
The cell-wall structure and plasma-membrane particle arrangement during cell wall formation of the filamentous chlorophycean alga Spirogyra sp. was investigated with the freeze-fracture technique [EM]. The cell wall consists of a thick outer slime layer and a multilayered inner wall with ribbon-like microfibrils. This inner wall shows 3 differing orientations of microfibrils: random orientation on its outside, followed by axial bundles of parallel microfibrils, and several internal layers of bands of mostly 5-6 parallel associated microfibrils with transverse to oblique orientation. The extraplasmatic fracture face of the plasma membrane shows microfibril imprints, relatively few particles, and terminal complexes arranged in a hexagonal package at the end of the imprint of a microfibril band. The plasmatic fracture face of the plasma membrane is rich in particles. In places, it reveals hexagonal arrays of rosettes. These rosettes are best demonstrable with the double-replica technique. These findings on rosette arrays of the zygnematacean alga Spirogyra are compared in detail with the published data on the desmidiacean algae Micrasterias and Closterium.