Cyclic Changes of the Golgi Body during Microsporogenesis in <i>Tradescantia paluclosa</i>

Behavior of Membrane System in the Cell during Cell Divisions of Microsporogenesis in <i>Tradescantia paludosa</i>

“…These cisternae again differentiate at anaphase and telophase into the nuclear envelope, the cisternae in the cytoplasm and the plasma membrane (Maruyama 1963). During meiosis in the material used in this study we have observed that not only the nuclear envelope but also the cisternae in the cytoplasm vesiculate extensively.…”

“…We have reported previously the behavior of membranes in the cell during premeiotic mitosis (Maruyama 1963). We concerns with that in the ensuing two divisions of meiotic mitosis in the present paper.…”

“…The Golgi bodies could not be found thereafter until the completion of meiosis (Maruyama 1965 meristematic cells. Fusion of the vesicles form a continuous layer of the cell plate which develops to a thick cell wall.…”

“…In the mitoses in plants such as premeiotic mitosis (Maruyama 1963) paludosa (Maruyama 1966) and somatic mitosis in root meristems (Porter and Machado 1960), no extensive vesiculation of cisternae in the cell takes place, that is, the nuclear envelope breaks down into somewhat long pieces of cisternae in prometaphase and the cisternae in the cytoplasm remain intact during a mitotic cycle. In contrast, it has been reported in animal cells that 17* the nuclear envelope disintegrates into small vesicles in late prophase of somatic mitosis (Barer et al 1959, Merriam 1959) and in late diakinesis of meiosis (Moses 1958).…”

“…After fixation, the materials were dehydrated through a series of ethanol and were embedded in an Epon mixture composed of Epon 812, DDSA and MNA (Luft 1961) in a ratio of 7:6:4 (Maruyama 1963). Thin sec tions were made with ultramicrotomes and were observed in electron microscopes without any further treatment.…”