Structure and function of cytoskeleton in plant cells.

1)细胞周期和细胞骨架：从烟草BY-2细胞质膜中纯化的蛋白复合物具有合成纤维素微纤维的能力。分析了组织培养细胞细胞周期中运动蛋白的动态变化。研究了微管前驱带的组织机理。2)细胞生长和细胞骨架：胞囊藻的质膜和细胞壁对皮质微管的组织有很强的贡献。研究了蕨类植物原核细胞中细胞骨架在细胞核定位中的作用。3)细胞质流动：对百合花粉管中的肌球蛋白进行了分析和表征。发现细胞质游离钙与细胞质流动密切相关。在缬草中，细胞壁在微丝的组织中起着重要的作用。从绒泡菌中纯化了ATP调节的肌动蛋白结合蛋白。在绒泡菌中发现了钙波对细胞质流动的调节作用。4)鞭毛运动：鞭毛外臂组织的第三个因素参与了鞭毛运动。发现了铵离子对绿藻趋光性的控制作用。

1)Cell cycle and cytoskeleton : Protein complex pufied from plasma membrane of tobacco BY-2 cell was found to have capacity to synthesize cellulose microfibril. Dynanics of kinesin-like protein was analyzed during cell cycle of tissure cultued cell. Mechanism of organization of preprophase band of microtubules was studied. 2) Cell Growth and cytoskeleton : Strong contribution of plasma membrane and cell wall to organization of cortical microtubules was found in coenocytic algae. Role of cytoskeletons in positioning of nucleus was elucidated in protonemal cells of fern. 3) Cytoplasmic streaming : Myosin was analyzed and characterized in lily pollen tubes. Close corelation between cytoplasmic free calcium and cytoplasmic streaming was found. Important role of cell wall in organization of microfilaments was found in Vallisneria. Actin binding protein regulated by ATP was purified from Physarum. Calium wave supposed to regulate cytoplasmic streaming was found in Physarum. 4) Flagellar movement : Involvement of a third factor for organization of outer arm of flagella was found. It was found that ammonium ion control nature of phototaxis im Euglena.