Entrainment and temperature dependence of the response oscillator in Halobacterium halobium.
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.
Schimz
A
A
Hildebrand
E
E
D006217:Halobacterium / Q000502:physiology*; D008027:Light; D009068:Movement; D013696:Temperature