Expression of Sod2dsRNA.Scer\UAS.cKa RNAi under the control of Scer\GAL4da.PU strongly reduces the survival rate of adult flies compared to controls.
Expression via P{GAL4-tim.E}27 or P{cry-GAL4.Z}17 (in the presence of Dcr-2Scer\UAS.cDa) does not significantly affect circadian rhythmicity in locomotor activity assays in constant darkness.
Chronic hypoxia (5% O[[2]]) dramatically restores the abbreviated life span of flies expressing Sod2dsRNA.Scer\UAS.cKa under the control of Scer\GAL4da.G32.
Survival of flies expressing Sod2dsRNA.Scer\UAS.cKa under the control of Scer\GAL4da.G32 rapidly plummets from well over 90% to less than 25% within a day when the flies are transferred from permissive hypoxia to restrictive normoxia conditions. If flies expressing Sod2dsRNA.Scer\UAS.cKa under the control of Scer\GAL4da.G32 are transferred from normoxia to hypoxia, the high mortality of the flies rapidly arrests, and the survivors live as long as their cohorts maintained under permanent hypoxia.
Extracts from Sod2dsRNA.Scer\UAS.cKa; Scer\GAL4da.G32 flies have reduced mitochondrial aconitase activity, and reduced succinate dehydrogenase activity. aconitase activity can be recovered by treating the extract with a iron and a thiol reductant. Sod2dsRNA.Scer\UAS.cKa; Scer\GAL4da.G32 flies are hypersensitive to paraquat toxicity (survival is reduced to 2% of control levels with P{UAS-Sod2.dsRNA.K}24 and 17 % of control levels with P{UAS-Sod2.dsRNA.K}15 on exposure to 2mM paraquat. Pre-adult mortality in Sod2dsRNA.Scer\UAS.cKa; Scer\GAL4da.G32 animals is no different to wild-type, but rapid onset adult mortality in these flies leads to a severe reduction in average lifespan (86% reduction with P{UAS-Sod2.dsRNA.K}15; 76% reduction with P{UAS-Sod2.dsRNA.K}24.)
Sod2RNAi.UAS.cKa/Scer\GAL4Mef2.PR is a suppressor of long lived phenotype of Scer\GAL4Mef2.PR, p38bUAS.cAa
Sod2RNAi.UAS.cKa, Scer\GAL4Hml.Δ is a non-suppressor of increased cell number | third instar larval stage phenotype of Hsap\RUNX1::Hsap\RUNX1T1UAS.cSa, Scer\GAL4Hml.Δ
Sod2RNAi.UAS.cKa, Scer\GAL4Hml.Δ is a non-suppressor of embryonic/larval hemocyte | third instar larval stage phenotype of Hsap\RUNX1::Hsap\RUNX1T1UAS.cSa, Scer\GAL4Hml.Δ
Expression of Sod2dsRNA.Scer\UAS.cKa suppresses the lifespan extension phenotype seen when p38bScer\UAS.cAa is expressed in muscles under the control of Scer\GAL4Mef2.PR.
Expression of Sod2dsRNA.Scer\UAS.cKa does not suppress the hemocyte overproliferation seen in third instar larvae when Hsap\RUNX1::Hsap\RUNX1T1Scer\UAS.cSa is expressed under the control of Scer\GAL4Hml.Δ.
dsRNA is expressed from the template to study the phenotypic consequences of dsRNA interference (RNAi) of the Sod2 gene.