Phytochrome action on the timing of cell division in adiantum gametophytes.
Phytochrome action on the timing of cell division in adiantum gametophytes.
复制标题
光敏色素对铁线蕨配子体细胞分裂时间的作用。
DOI：
10.1104/pp.49.2.110
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发表时间：
1972
期刊：
影响因子：
7.4
通讯作者：
M. Furuya
中科院分区：
文献类型：
--
作者：
M. Wada;M. Furuya
细茎铁线蕨（Adiantum capillus-veneris L.）将在连续红光下预培养的细胞转移到黑暗中，此后约24至36小时，顶端细胞分裂。在黑暗孵育之前，通过短暂暴露于远红光，使细胞分裂时间延迟数小时。在前一个远红光之后立即给予小剂量的红光，可以逆转远红光的效果。红光和远红光的影响是反复可逆的，表明细胞分裂的时间是由光敏色素系统调节的。当在黑暗孵育前给予短暂的蓝光照射时，在黑暗中17至26小时后发生细胞分裂。在蓝光诱导的细胞分裂的时间上也观察到类似的红色远红可逆效应。因此，细胞分裂的时间似乎是由光敏色素和吸收蓝光的色素控制的。
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.