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'temperature' in keywords Facet   section ZfN Section C:Volume 030  [X]
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1975[X]
1Author    Ursula Hamm, M. Aroli, K. Chandrashekaran, W. Olfgang EngelmannRequires cookie*
 Title    Temperature Sensitive Events between Photoreceptor and Circadian Clock?  
 Abstract    The phase shifting action of low temperature pulses of 6 °C and 2 h duration administered to the various phases of the D rosoph ila pseudoobscu ra circadian rhythm and the action of light pulses given 30 min after the beginning of these low temperature pulses have been investigated. The phase response curve obtained from experiments with light pulses during low temperature cannot be ex­ plained on the basis of a straightforward and sequential phase shifting of the oscillation by the various transitions in the pulses. The response curve, after the slight phase shifting action of the temperature pulses is corrected for, resembles the standard phase response curve 4 for light pulses (at 20 °C) in its wave form but n ot in its time course. Our curve is shifted in time in a manner that indicates that the light pulses accompanying the low temperature pulses arrived at phase points 1.5 h later than the actual phases at which they were given. We attribute this delay to a slowing down of the information that is apparently transmitted by a process that is temperature dependent. 
  Reference    (Z. Naturforsch. 30c, 240 [1975]; received November 22 1974) 
  Published    1975 
  Keywords    Circadian Rhythm, Photoreceptor, Temperature, D rosophila pseudoobscura 
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 TEI-XML for    default:Reihe_C/30/ZNC-1975-30c-0240.pdf 
 Identifier    ZNC-1975-30c-0240 
 Volume    30