Scer\GAL4Orco.2.642.Hsim\VP22/cycUAS.Tag:MYC fails to rescue cyc01
The pronounced circadian rhythm of close-proximity encounters seen in wild-type male:female pairs is lost when the male is homozygous for cyc01. This phenotype is not rescued by cycScer\UAS.T:Hsap\MYC; Scer\GAL4Or83b.2.642.T:Hsim\VP22.
cyc01 flies lack the diurnal changes in the mean electroantennogram (EAG) response to ethyl acetate which are seen in wild-type flies maintained in 12 hour light:12 hour dark cycles. This phenotype is rescued by expression of cycScer\UAS.T:Hsap\MYC under the control of Scer\GAL4Or83b.2.642.T:Hsim\VP22 or Scer\GAL4Or22a.8197. In the case of rescue using Scer\GAL4Or22a.8197, if the EAG recordings are taken from a more lateral position on the antenna (which is outside the region of Scer\GAL4Or22a.8197 expression) then the EAG responses are still arrhythmic in the rescued flies.