Contrary to that reported in FBrf0074834, P{PZ} is inserted between base pairs 202 and 203 of the published sequence (FBrf0074834), in the 5' UTR, in opposite orientation to the repo transcript.
repo03702/+ mutants exhibit significantly impaired long term memory performance 24 hours after spaced training in an aversive olfactory association paradigm, as compared to controls; but do not show significantly decreased anesthesia-resistant memory performance 24 hours after massed training in an aversive olfactory association paradigm, as compared to controls.
Glial cell organisation is impaired in repo03702 mutant embryos. A higher volume of apoptotic particles is seen in repo03702 mutant CNS compared to controls, and many more of these apoptotic particles are not engulfed by phagocytes, glia or macrophages than in wild type.
The volume of glial cells in repo03702 mutant embryos is half the normal glial volume but the normal number of glial cells is formed.
repo03702 mutant embryos exhibit defects in the engulfment of apoptotic particles by glia in the CNS; the glial cells contain fewer phagosomes and apoptotic particles become overloaded within the glial cell. The macrophages in repo03702 mutants contain a greater volume of phagosomes compared to controls.
repo03702 mutant glial cell are abnormally located in the CNS and lack appropriate contacts with each other. Unlike the barely motile wild type glia, repo03702 mutant glia exhibit increased motility and are able to engulf multiple apoptotic particles.
The eve-positive U neurons derived from neuroblast NB7-1 and the four eg-positive neurons derived from neuroblast NB7-3 adopt normal positions in mutant embryos. The fasciculation of Fas2-positive motor neurons is abnormal in a small proportion of segments and the ventral nerve cord is slightly extended at stage 16.
In the periphery of homozygous repo03702 embryos, the intersegmental nerve b (ISNb) is normal, although there are rare stall phenotypes.
In stage 16 repo03702 homozygous embryos, the numbers of lateral glia are reduced and those that remain are disorganised, most peripheral glia are either missing or displaced and longitudinal glia are displaced towards the lateral edges of the ventral nerve cord.
Heterozygotes with repo1 are semi-lethal.
repo03702 has abnormal neuroanatomy | embryonic stage phenotype, enhanceable by Tre1Δ10
repo03702 has abnormal neuroanatomy | embryonic stage phenotype, suppressible by Scer\GAL4repo.PU/NimC4UAS.GFP
repo03702 has abnormal neuroanatomy | embryonic stage phenotype, suppressible by drprI.UAS/Scer\GAL4repo.PU/NimC4UAS.GFP
repo03702 has abnormal neuroanatomy | embryonic stage phenotype, non-suppressible by drprI.UAS/Scer\GAL4repo.PU
Tre1Δ10, repo03702 has abnormal neuroanatomy | embryonic stage phenotype
repo03702 has larval longitudinal connective phenotype, enhanceable by Tre1Δ10
repo03702 has glial cell phenotype, suppressible | partially by Scer\GAL4repo.PU/NimC4UAS.GFP
repo03702 has glial cell phenotype, suppressible by drprI.UAS/Scer\GAL4repo.PU/NimC4UAS.GFP
repo03702 has glial cell phenotype, non-suppressible by drprI.UAS/Scer\GAL4repo.PU
Expression of drprI.Scer\UAS under the control of Scer\GAL4repo.PU does not rescue the glial phagocytosis defects seen in repo03702 mutant embryos; the morphology and localisation of the glia still appear abnormal, and there is an increase in apoptotic particles outside of the glial cells.
Expression of NimC4Scer\UAS.T:Avic\GFP under the control of Scer\GAL4repo.PU partially rescues the phagocytosis defects seen in repo03702 mutant embryos. The morphology and localisation of the glia still appear abnormal and the cells are overloaded with apoptotic particles. However, although the total volume of apoptotic particles in the CNS remains the same as in repo03702 mutant embryos alone, a higher proportion have been engulfed by phagocytes in the rescue embryos.
Co-expression of NimC4Scer\UAS.T:Avic\GFP and drprI.Scer\UAS under the control of Scer\GAL4repo.PU fully rescues the phagocytosis defects seen in repo03702 mutant embryos.
A. Spradling.
Complements: l(3)0064300643. Complements: Dlc90F04091. Complements: quag05089. Complements: sprd05284. Complements: l(3)0582205822. Complements: sr06915b. Complements: 14-3-3εj2B10. Complements: MED17s2956.
Remobilisation of the P{PZ} generates viable revertants.