Pka-C1X4/Pka-C1Tw2 mutant flies show an inability to find a preferred temperature, with temperature preference spread across a wide gradient.
Pka-C1X4/Df(2L)γ15 mutant flies show an inability to find a preferred temperature, with temperature preference spread across a wide gradient.
Pka-C1X4/Pka-C1MB581 mutant flies show an inability to find a preferred temperature, with temperature preference spread across a wide gradient.
The firing frequency is significantly increased in adaptive and tonic Pka-C1X4 neurons. The action potential amplitude is significantly decreased in adaptive but slightly reduced in tonic neurons in Pka-C1X4 mutant neurons. Pka-C1X4 mutant neurons display erratic firing rates during current injection.
When Pka-C1X4 mutant neurons are simulated by step current injections, the firing pattern, in particular the number of spikes in each spike train, varied to a much greater extent than that in wild-type cells.
As in wild-type, there is little variability in the time to peak of evoked ejcs in mutant boutons. There is a reduction in excitatory junctional current amplitude at the neuromuscular junction in mutant larvae.
Mutants exhibit normal circadian pacemakers that can be entrained by light-dark cycles. Mutants display arrhythmic locomotor activity, rhythmic eclosion persists so eclosion occurs as in wild type.
Pka-C1X4 hemizygotes die as third-instar larvae at 18[o]C, the restrictive temperature, but are viable when raised at 25[o]C.
At 25[o]C, Pka-C1X4 hemizygotes exhibit reduced initial learning relative to controls but normal memory decay in a Pavlovian olfactory learning assay. Shifting the temperature from 25[O]C to 18[o]C prior to training reduces initial learning to a similar extent to Pka-C1X4 hemizygotes and controls but results in a steeper memory decay curve only in Pka-C1X4 hemizygotes.
Pka-C1X4/Pka-C1MB581 is partially rescued by Scer\GAL4Mef2.247/Pka-C1UAS.cKa
Pka-C1X4/Pka-C1MB581 is partially rescued by Scer\GAL4c309/Pka-C1UAS.cKa
Expression of Pka-C1Scer\UAS.cKa under the control of either Scer\GAL4Mef2.247 or Scer\GAL4c309 almost completely rescues the temperature preference behavior defects seen in Pka-C1MB581/Pka-C1X4 mutant.