嗜盐菌中响应振荡器的同步化及温度依赖性
Entrainment and temperature dependence of the response oscillator in Halobacterium halobium.
作者信息
Schimz A, Hildebrand E
出版信息
J Bacteriol. 1986 May;166(2):689-92. doi: 10.1128/jb.166.2.689-692.1986.
Abstract
Halobacterium halobium spontaneously reverses its swimming direction with a frequency of about 0.1 s-1. The self-sustained periodicity can be entrained by rhythmic light stimuli within a limited range between 0.13 and 0.3 s-1. Increase of temperature increases the reversal frequency and shortens the time to reach maximal responsiveness to attractant stimuli during a cycle. Also, the period of absolute refractoriness to repellent stimuli is shortened. The results illustrate characteristic properties of biological oscillators.
摘要
嗜盐菌会以约0.1秒^-1的频率自发地改变其游动方向。这种自我维持的周期性可以被0.13至0.3秒^-1有限范围内的节律性光刺激所夹带。温度升高会增加反转频率，并缩短在一个周期内达到对吸引剂刺激最大反应性的时间。此外，对驱避剂刺激的绝对不应期也会缩短。这些结果说明了生物振荡器的特性。
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