P{EP}Fmr1EP3517 is inserted into the second exon of Fmr1, which encodes 5'-untranslated region sequences.
dorsal cluster neuron & neurite (with Fmr1Δ113M)
LNv neuron (with Fmr1Δ113M)
neuromuscular junction & synapse, with Scer\GAL4elav-C155
ventral adult lateral neuron & commissure
There is an increase in the total number of branches and the total number of boutons at the neuromuscular junction in mutant larvae compared to controls.
Fmr1EP3517; Scer\GAL4n-syb.PS adults sleep significantly less per day than wild-type controls. This phenotype becomes more pronounced with age, peaking at 4 weeks in males and 10 days in females. Reduced sleep is also seen when Fmr1EP3517 is combined with Scer\GAL430Y, Scer\GAL4Tab2-201Y or Scer\GAL4238Y but not Scer\GAL4c309. Reduced sleep and waking activity is also seen in Fmr1EP3517 is combined with Scer\GAL4elav.Switch.PO in the presence of RU486.
Fmr1Δ50M/Fmr1EP3517 adults sleep significantly longer per day than wild-type, although the effect is more subtle than in Fmr1Δ50M homozygotes and is more pronounced in females than in males. Fmr1EP3517/+ females also sleep significantly longer than wild-type.
Overexpression by Scer\GAL4P2.4.Pdf results in a defasciculation phenotype of the termini of the LNv neuron's dorsal projections.
An ectopic collateral branch is observed on the small LNv projections in 6% of Fmr1EP3517 adult brains. The posterior tract of the LNv neurons shows a defasciculation phenotype in 22% of Fmr1EP3517 brains. These phenotypes are not observed in Fmr1EP3517/+ brains.
Slightly over 60% of homozygous Fmr1EP3517 mutants exhibit severe midline crossing in the β-lobe of the mushroom body (defined as a densely strained band equal to or greater in width and thickness than those of the adjacent β-lobes). Approximately just under 10% exhibit moderate midline crossing (defined as when the thickness of the fiber bundle crossing the midline is considerable but less than the width of the β-lobe termini). No sexual dimorphism in penetrance or expressivity is found.
Homozygous Fmr1EP3517 mutants exhibit misdirected or missing α-lobes in approximately 10% of cases.
Larvae expressing Fmr1EP3517 under the control of Scer\GAL4elav-C155 have significantly shorter synapses at the neuromuscular junction (70.0 +/- 3.6 μm) compared to wild-type larvae (111.1 μm).
Fmr1EP3517 driven by Scer\GAL4GMR.PF affects eye morphology - ommatidia are misorganised. When Fmr1EP3517 is driven by Scer\GAL4elav-C155 synaptic undergrowth is seen. The average synaptic length decreases from 105um in wild-type to 70um.
Expression of Fmr1EP3517 under the control of Scer\GAL4GMR.PF results in a very mild rough eye phenotype.
Flies show no visible phenotypic abnormalities. When expression is driven by Scer\GAL4tim.PE, flies show arrhythmicity and period lengthening in a Scer\GAL4tim.PE-dependent manner.
Mutants show a fibre extension defect in the DC and LNv neurons. Extension of DC axons from the lobula to the medulla is incomplete, some axons show guidance errors. LNv neurons may over extend, show guidance defects or show aberrant morphology. The LVn defects are less consistent than those in the DC neurons. Stereotypical grid-like array of neurites entering the medulla is disrupted in mutant flies - short and thin branches fail to connect. This occurs even for neurons that do cross towards the distal medulla. Homozygotes show only 79.5% of expected eclosion from pupal case.
Mutants show no morphological defects. When tested for bang sensitivity, temperature sensitivity and phototaxis there is no detectable difference between wild type and mutant. However there are defects in coordination in a simple flight test. When expression is driven by Scer\GAL4hs.2sev a mild rough eye phenotype results.
Fmr1EP3517 has abnormal neuroanatomy | larval stage phenotype, suppressible by RanBPMk05201/l(2)k05201[+]
Fmr1EP3517, Scer\GAL4elav-C155 has abnormal neuroanatomy phenotype, suppressible | partially by CyfipEP3267, Scer\GAL4elav-C155
Fmr1EP3517, Scer\GAL4elav-C155 has abnormal neuroanatomy phenotype, non-suppressible by HemUAS.cHa, Scer\GAL4elav-C155
Fmr1EP3517, Scer\GAL4elav-C155 has abnormal neuroanatomy phenotype, non-suppressible by SCARUASp.cZa, Scer\GAL4elav-C155
Fmr1EP3517, Scer\GAL4GMR.PF is an enhancer of visible phenotype of Hsap\MAPTV337M.UAS, Scer\GAL4GMR.PF
Scer\GAL4pnr-MD237/Fmr1EP3517 is an enhancer of visible phenotype of pnrMD237
Fmr1EP3517, Scer\GAL4GMR.PF is a non-enhancer of visible phenotype of Hsap\ATXN182.UAS, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF is a non-suppressor of visible phenotype of Hsap\ATXN182.UAS, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF has ommatidium phenotype, enhanceable by Cyfipunspecified
Fmr1EP3517, Scer\GAL4elav-C155 has synapse phenotype, enhanceable by Cyfipunspecified
Fmr1EP3517, Scer\GAL4GMR.PF has eye phenotype, enhanceable by Cyfipunspecified, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF has eye phenotype, enhanceable by Rac1V12.UAS, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF has ommatidium phenotype, enhanceable by Rac1V12.UAS, Scer\GAL4GMR.PF
Fmr1EP3517 has embryonic/larval neuromuscular junction phenotype, suppressible by RanBPMk05201/l(2)k05201[+]
Fmr1EP3517 has NMJ bouton phenotype, suppressible by RanBPMk05201/l(2)k05201[+]
Fmr1EP3517, Scer\GAL4elav-C155 has neuromuscular junction & synapse phenotype, suppressible | partially by CyfipEP3267, Scer\GAL4elav-C155
Fmr1EP3517, Scer\GAL4GMR.PF has eye phenotype, suppressible | partially by CyfipEP3267, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF has ommatidium phenotype, suppressible | partially by CyfipEP3267, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4elav-C155 has synapse phenotype, suppressible | partially by CyfipEP3267, Scer\GAL4elav-C155
Fmr1EP3517, Scer\GAL4elav-C155 has neuromuscular junction & synapse phenotype, non-suppressible by HemUAS.cHa, Scer\GAL4elav-C155
Fmr1EP3517, Scer\GAL4elav-C155 has neuromuscular junction & synapse phenotype, non-suppressible by SCARUASp.cZa, Scer\GAL4elav-C155
Fmr1EP3517, Scer\GAL4GMR.PF is an enhancer of eye phenotype of Rac1V12.UAS, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF is an enhancer of ommatidium phenotype of Rac1V12.UAS, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF is an enhancer of eye phenotype of Hsap\MAPTV337M.UAS, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF is an enhancer of ommatidium phenotype of Hsap\MAPTV337M.UAS, Scer\GAL4GMR.PF
Scer\GAL4pnr-MD237/Fmr1EP3517 is an enhancer of chaeta phenotype of pnrMD237
Fmr1EP3517, Scer\GAL4GMR.PF is a non-enhancer of eye phenotype of Hsap\ATXN182.UAS, Scer\GAL4GMR.PF
Fmr1EP3517, Scer\GAL4GMR.PF is a non-suppressor of eye phenotype of Hsap\ATXN182.UAS, Scer\GAL4GMR.PF
Cyfipunspecified, Fmr1EP3517, Scer\GAL4GMR.PF has eye phenotype
Cyfipunspecified, Fmr1EP3517, Scer\GAL4GMR.PF has ommatidium phenotype
Fmr1EP3517, Scer\GAL4pnr-MD237, pnrMD237/pnr[+] has macrochaeta phenotype
Fmr1EP3517, Scer\GAL4pnr-MD237, pnrMD237/pnr[+] has scutellum phenotype
Fmr1EP3517, Scer\GAL4pnr-MD237, pnrMD237 has macrochaeta phenotype
Fmr1EP3517, Scer\GAL4pnr-MD237, pnrMD237 has scutellum phenotype
The increased number of branches and of boutons at the neuromuscular junction of Fmr1EP3517 larvae is significantly suppressed by RanBPMk05201/+.
Fmr1EP3517/+; Dp(2;2)C619/+ brains show no ectopic branches on the small LNv projections and posterior tract defasciculation is no higher than in Dp(2;2)C619/+ single heterozygotes.
The reduced synaptic length seen at the neuromuscular junction in larvae expressing Fmr1EP3517 under the control of Scer\GAL4elav-C155 is not suppressed by co-expression of either HemScer\UAS.cHa or SCARScer\UAS.P\T.cZa. The reduced synaptic length seen at the neuromuscular junction in larvae expressing Fmr1EP3517 under the control of Scer\GAL4elav-C155 is partially suppressed by co-expression of Sra-1EP3267.
The combination of heterozygous Sra-1unspecified and Fmr1EP3517 (driven by Scer\GAL4GMR.PF) gives a strong eye phenotype, stronger than Scer\GAL4GMR.PF driven by Scer\GAL4GMR.PF. Eyes are of reduced size and contain areas lacking in ommatidia.
pnrMD237/+ adults expressing Fmr1EP3517 under the control of Scer\GAL4pnr-MD237 have a deformed scutellum and several deformed macrochaetae.
The rough eye phenotype caused by expression of Hsap\MAPTV337M.Scer\UAS under the control of Scer\GAL4GMR.PF is enhanced by Fmr1EP3517.
Fmr1EP3517 is rescued by Fmr1+mIa
Selected as: a P{EP} insertion line that modifies the pnrMD237/+ phenotype when expressed using Scer\GAL4pnr-MD237.
Precise excision of the P{EP} element reverts the modifying effect of Fmr1EP3517 on the rough eye phenotype caused by expression of Hsap\MAPTV337M.Scer\UAS under the control of Scer\GAL4GMR.PF.