Expression of ineRA.Scer\UAS under the regulation of Scer\GAL4MZ1580 confers reduced excitability on the larval stage motor neuron, with a decreased rate of onset of long-term facilitation. Expression of ineRA.Scer\UAS under the regulation of Scer\GAL4MZ1580 confers temperature sensitive paralysis. 92% of flies carrying both ineRA.Scer\UAS and Scer\GAL4Gli-rL82 constructs become paralysed after transfer from 18oC to 38oC, whereas flies carrying either ineRA.Scer\UAS or Scer\GAL4Gli-rL82 do not show this paralysis. Only 4.5% of flies expressing ineRA.Scer\UAS under the regulation of Scer\GAL4MZ1580 become paralysed when placed at 29oC. Larvae in which ineRA.Scer\UAS is expressed under the control of either Scer\GAL4MZ1580 or Scer\GAL4Gli-rL82 exhibit a higher frequency of failures in evoked transmitter release from larval stage motor nerve terminals when bathed in varying Ca2+ concentrations. When ineRA.Scer\UAS is expressed under the control of Scer\GAL4Gli-rL82, at the permissive temperature of 21-22oC, larvae exhibit compound action potentials with a reduced amplitude compared to wild-type. At the restrictive temperature of 38oC, larvae expressing ineRA.Scer\UAS under the control of Scer\GAL4Gli-rL82 exhibit a complete loss of compound action potentials. This loss is reversed when the temperature is lowered to a permissive range.
ineRA.UAS/Scer\GAL4Gli-rL82 is an enhancer of paralytic | heat sensitive phenotype of para63
*S Expression of ineRA.Scer\UAS driven by either Scer\GAL4Gli-rL82 or Scer\GAL4MZ1580 fully suppresses the downturned wings phenotype of Sh14 ine1. The Sh14 hyperexcitability phenotype, such as leg-shaking, can be suppressed by expression of ineRA.Scer\UAS under the control of Scer\GAL4MZ1580.
When ineRA.Scer\UAS is expressed under the control of Scer\GAL4Gli-rL82 in a para63 mutant, 73% of the flies become paralysed at 29oC.
At 32oC, all para63 flies expressing ineRA.Scer\UAS under the control of Scer\GAL4Gli-rL82 are paralysed.
Expression of ineRA.Scer\UAS driven by either Scer\GAL4Gli-rL82 or Scer\GAL4elav.PLu fully suppresses the downturned wings phenotype of Sh14 ine1, along with the increased rate of onset of long-term facilitation phenotype. These flies also require even more repetitive nerve stimulation compared to wild-type for the onset of long-term facilitation. Expression of ineRA.Scer\UAS in larval stage neurons, under the regulation of Scer\GAL4elav.PLu partially suppresses the long-term facilitation phenotype. Expression of ineRA.Scer\UAS driven by Scer\GAL4MZ1580 in the glia, results in 94% rescue of the Sh14 ine1 downturned wing phenotype. The Sh14 hyperexcitability phenotype, such as leg-shaking, can be suppressed by expression of ineRA.Scer\UAS under the control of Scer\GAL4MZ1580. When ineRA.Scer\UAS is expressed under the control of Scer\GAL4Gli-rL82, in a para63 mutant, 73% of the flies become paralysed at 29oC. When para63 flies, expressing ineRA.Scer\UAS under the control of Scer\GAL4Gli-rL82, are placed at 32oC, all the flies are paralysed.
ineRA.UAS/Scer\GAL4Irk2.PL rescues ine2
ineRA.UAS/Scer\GAL4Irk2.PL rescues ine3
ineRA.UAS/Scer\GAL4elav.PLu partially rescues ine1
Scer\GAL4elav.PU/ineRA.UAS fails to rescue ine2
ineRA.UAS/Scer\GAL4repo.PU fails to rescue ine2
Scer\GAL4elav.PU/ineRA.UAS fails to rescue ine3
ineRA.UAS/Scer\GAL4repo.PU fails to rescue ine3
Expression of ineRA.Scer\UAS in the hindgut under the control of Scer\GAL4Irk2.PL rescues the lethality seen when ine2 mutant flies are raised on hypertonic medium. Expressing ineRA.Scer\UAS in neurons (Scer\GAL4elav.PU) or glia (Scer\GAL4repo.PU) does not rescue the lethality.
Expression of ineRA.Scer\UAS in the hindgut under the control of Scer\GAL4Irk2.PL rescues the lethality seen when ine3 mutant flies are raised on hypertonic medium. Expressing ineRA.Scer\UAS in neurons (Scer\GAL4elav.PU) or glia (Scer\GAL4repo.PU) does not rescue the lethality.
Expression of ineRA.Scer\UAS in the hindgut under the control of Scer\GAL4Irk2.PL completely rescues the reduction in hemolymph volume and total body water content seen when ine3 mutant flies are kept on a hypertonic medium.
Expression of ineRA.Scer\UAS in the hindgut under the control of Scer\GAL4Irk2.PL rescues the increased sensitivity to lack of water seen when ine2 mutant flies. Expressing ineRA.Scer\UAS in neurons (Scer\GAL4elav.PU) or glia (Scer\GAL4repo.PU) does not rescue this increased sensitivity.
Expression of ineRA.Scer\UAS under the control of Scer\GAL4MZ1580 rescues the increased rate of onset of long-term facilitation phenotype seen in ine1 mutants. The rescued flies also require even more repetitive nerve stimulation compared to wild-type for the onset of long-term facilitation.
Expression of ineRA.Scer\UAS in larval stage neurons under the regulation of Scer\GAL4elav.PLu partially suppresses the long-term facilitation phenotype seen in ine1 mutants.