Light-adaptation in the photophobic response by Stentor coeruleus.
Light-adaptation in the photophobic response by Stentor coeruleus.
复制标题
Stentor coeruleus 的畏光反应中的光适应。
DOI：
10.1007/bf00415271
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发表时间：
1987
影响因子：
2.8
通讯作者：
Song,PS
中科院分区：
文献类型：
--
作者：
Hong,CB;Prusti,RK;Song,PS
本文研究了预光照对蓝腹蛛（Stentorcoeruleus）的畏光反应（光适应）和暗适应中畏光敏感性恢复（暗适应）的影响。在7.80 W/m2的白色光预照2 min后，细胞的憎水反应的光通量-速率响应曲线向高光强方向移动了半个数量级。预照明与更高的光强度导致的荧光响应曲线的进一步移动。光适应的作用光谱在610 nm处有一个主峰，在540和480 nm处有一个次峰，与光适应的作用光谱中观察到的峰几乎一致，暗处理后光适应细胞的光适应能力恢复。对于大多数接受检查的病例来说，暗适应导致疏光感觉能力在8分钟内完全恢复。
Effects of preillumination on photophobic response (light-adaptation) and recovery of the photophobic sensitivity in the dark (dark-adaptation) inStentor coeruleuswere examined. When the cells were preilluminated with white light of 7.80 W/m2for 2 min, the fluence-rate response curve of photophobic response was shifted toward higher light intensities by half an order of magnitude compared to the one without preillumination. Preillumination with a higher light intensity resulted in a further shift of the fluencerate response curve. An action spectrum for light-adaptation showed a primary peak at 610 nm and secondary peaks at 540 and 480 nm which are almost identical to the peaks observed in the photophobic action spectrum.The light-adapted cells showed a recovery of their photophobic sensing ability following dark treatment. Dark-adaptation resulted in total recovery of photophobic sensing ability in 8 minutes for the most cases examined.