Department of Botany, Faculty of Science, University of Tokyo, Hongo, Tokyo 113, Japan.
Plant Physiol. 1972 Feb;49(2):110-3. doi: 10.1104/pp.49.2.110.
When filamentous protonemata of Adiantum capillus-veneris L. precultured under continuous red light were transferred to the dark, the apical cell divided about 24 to 36 hours thereafter. The time of the cell division was delayed for several hours by a brief exposure to far red light given before the dark incubation. The effect of far red light was reversed by a small dose of red light given immediately after the preceding far red light. The effects of red and far red light were repeatedly reversible, indicating that the timing of cell division was regulated by a phytochrome system. When a brief irradiation with blue light was given before the dark incubation, the cell division occurred after 17 to 26 hours in darkness. A similar red far red reversible effect was also observed in the timing of the blue light-induced cell division. Thus, the timing of cell division appeared to be controlled by phytochrome and a blue light-absorbing pigment.
当铁线蕨的丝状原丝体在连续的红光下预培养后被转移到黑暗中时，顶端细胞大约在其后 24 到 36 小时后分裂。在黑暗培养之前短暂暴露于远红光会延迟细胞分裂几个小时。前面远红光之后立即给予少量红光可以逆转远红光的作用。红光和远红光的作用可以反复可逆，表明细胞分裂的时间由光敏色素系统调节。当在黑暗培养之前给予短暂的蓝光照射时，细胞在黑暗中 17 到 26 小时后分裂。在蓝光诱导的细胞分裂的时间控制中也观察到了类似的红-远红可逆效应。因此，细胞分裂的时间似乎由光敏色素和蓝光吸收色素控制。
