Action Spectrum for the Photophobic Response of Ciona intestinalis (Ascidieacea, Urochordata) Larvae Implicates Retinal Protein
Action Spectrum for the Photophobic Response of Ciona intestinalis (Ascidieacea, Urochordata) Larvae Implicates Retinal Protein
复制标题
海鞘（海鞘科、尾索动物）幼虫的避光反应的作用谱与视网膜蛋白有关
DOI：
10.1111/j.1751-1097.1999.tb08149.x
复制
发表时间：
1999
影响因子：
3.3
通讯作者：
M. Tsuda
中科院分区：
文献类型：
--
作者：
M. Nakagawa;T. Miyamoto;M. Ohkuma;M. Tsuda
摘要：海鞘蝌蚪幼虫在发育过程中会改变游泳行为。采用时间分辨率为0.1 s的计算机化细胞跟踪系统监测了黄颡鱼幼虫的光行为。新孵化的幼虫平均游泳速度为1.4毫米/秒，但对光刺激没有反应。孵化后3 h，幼虫的游泳速度变慢（0.4 mm/s），孵化后4 h，光照强度的突然降低使其游泳速度加快。在发育过程中，游泳行为的最大速度随着时间的增加而增加，直到孵化后8 h才趋于平稳。在孵化后约8 h测定了幼虫的阶跃式疏光反应的作用谱，并拟合到Dartnall's图中，色素的最大吸光度位于505 nm处。这些结果表明，幼虫细胞中的视网膜蛋白是光行为的光感受器。
Abstract Ascidian tadpole larvae change swimming behavior during the course of development. The photic behavior of the larvae of Ciona intestinalis was monitored by a computerized cell‐tracking system with a time resolution of 0.1 s. Newly hatched larvae swim at an average speed of 1.4 mm/s but show no response to light stimuli. The swimming speed of the larvae became slower (0.4 mm/s) 3 h after hatching and they were induced to swim more rapidly by a sudden decrease in light intensity 4 h after hatching. During the course of development, the maximal speed of swimming behavior increased with time until 8 h after hatching and then plateaued. The action spectrum for the step‐down photophobic response of the larvae was determined at around 8 h after hatching and was fitted to Dartnall's nomogram with the absorbance maximum of the pigment located at 505 nm. These results suggest retinal proteins in the ocellus of the larvae are the photoreceptors for the photobehavior.
嗜盐杆菌趋光性中的激发信号处理时间。
影响因子：
3.4
作者：
Sundberg,SA;Alam,M;Spudich,JL
通讯作者：
Spudich,JL