dorsal mesothoracic disc & epithelial cell
imaginal disc epithelial cell (with l(2)gl4), with Scer\GAL4hh.PU, l(2)glASA.UAS.GFP
larval brain & neuroblast | supernumerary
mitotic spindle (with l(2)gl4), with Scer\GAL4hh.PU, l(2)glASA.UAS.GFP
mitotic spindle (with l(2)gl4), with Scer\GAL4hh.PU, l(2)glUAS.Tag:Myr(Unk)
ventral thoracic disc & epithelial cell
wing disc (with l(2)gl4), with Scer\GAL4hh.PU, l(2)glASA.UAS.GFP
wing disc (with l(2)gl4), with Scer\GAL4hh.PU, l(2)glUAS.Tag:Myr(Unk)
Expression of Scer\GAL4hh.PU>l(2)glASA.Scer\UAS.T:Avic\GFP rescues the cell polarity defects in l(2)gl4/l(2)gl334 mutant wing disc epithelia, but reveals spindle orientation defects.
Expression of Scer\GAL4hh.PU>l(2)glScer\UAS.T:Uuuu\Myr-Unk rescues the cell polarity defects in l(2)gl4/l(2)gl334 mutant wing disc epithelia, but reveals spindle orientation defects.
At 24 hours after clone induction, type I and II neuroblast clones in l(2)gl334/l(2)gl3644 larval brains contain a single neuroblast, as occurs in wild type. However, at 48 hours after clone induction, the mutant type I and II neuroblast clones contain supernumerary neuroblasts.
Intermediate neural progenitor cell derived clones in l(2)gl334/l(2)gl3644 larval brains contain multiple supernumerary type II neuroblasts.
l(2)gl334/l(2)gl3644 larval brains contain an increased number of type II neuroblasts and intermediate neural progenitor cells compared to wild type.
Mutants show an increased number of brain neuroblasts at 96 hours after larval hatching compared to controls. Mutant neuroblast clones in the larval brain often contain two neuroblasts, and can contain up to six neuroblasts, in contrast to control clones which contain a single neuroblast.
l(2)gl4/l(2)gl334 L3 larval brains are larger in volume (65% larger) than l(2)gl334/+ brains. l(2)gl334/l(2)gl334 L3 larval brains possess 136 +/- 12 neuroblasts compared to a l(2)gl334/+ value of 92 +/- 6. Homozygous l(2)gl334 L3 larval imaginal discs are enlarged compared to l(2)gl334 heterozygous discs. They don't exhibit a monolayer at L2/L3 larval stages and have a ~49% increase in the number of neuroblasts compared to controls. l(2)gl334 mutant third instar leg and wing imaginal discs are highly enlarged and disorganised, and often fuse with each other or nearby tissues. At the cellular level, mutant epithelial cells are round instead of columnar, with an expanded apical membrane domain.
Salivary glands isolated from 8 day old third instar l(2)gl334/l(2)gl4 larvae and maintained in Schneider culture medium for 24 hours are considerably reduced in size compared to wild-type controls and have a "bunch of grapes" shape. The cells of the mutant glands are nearly spherical in form with a reduced surface of cell-to-cell contact. Administration of 10[-5]M 20-hydroxyecdysone fails to induce the histolysis of the mutant glands. No sign of vacuolisation or abnormal pattern of organelle distribution can be detected in treated mutant salivary gland cells and the overall organisation of the glands and structure of the cells is similar to those of untreated mutant glands.
Some Df(2L)U558/l(2)gl334 flies are viable. The viability is affected by temperature; the temperature sensitive period is diphasic at 17oC and 29oC.
18.4% of mutants die as larvae, 81.6% as pupae. Weak allele: brain and discs are small and rudimentary and grow slowly in transplants.
l(2)gl334/l(2)gl3644 has abnormal neuroanatomy | larval stage phenotype, suppressible by aPKCk06403/aPKC[+]
l(2)gl334/l(2)gl3644 has abnormal neuroanatomy | larval stage phenotype, suppressible by numbUAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has abnormal neuroanatomy | larval stage phenotype, suppressible by Scer\GAL4ase.neuro/numbΔC.UAS.Tag:HA
l(2)gl334/l(2)gl3644 has abnormal neuroanatomy | larval stage phenotype, suppressible by numbΔN.UAS.Tag:MYC/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has abnormal neuroanatomy | larval stage phenotype, suppressible by numbS2A.UAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has abnormal neuroanatomy | larval stage phenotype, suppressible by numbS2D.UAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has abnormal neuroanatomy | larval stage phenotype, non-suppressible by numbΔPTB.UAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has abnormal neuroanatomy | larval stage phenotype, non-suppressible by numbΔAB.UAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl[+] is a suppressor | partially of visible | dominant phenotype of Fmr1sev.PW
l(2)gl334/l(2)gl3644 has intermediate neuronal progenitor | increased number | larval stage phenotype, suppressible by aPKCk06403/aPKC[+]
l(2)gl334/l(2)gl3644 has type I neuroblast | increased number | larval stage phenotype, suppressible by numbUAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has type I neuroblast | increased number | larval stage phenotype, suppressible by Scer\GAL4ase.neuro/numbΔC.UAS.Tag:HA
l(2)gl334/l(2)gl3644 has type I neuroblast | increased number | larval stage phenotype, suppressible by numbΔN.UAS.Tag:MYC/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has type I neuroblast | increased number | larval stage phenotype, suppressible by numbS2A.UAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has type I neuroblast | increased number | larval stage phenotype, suppressible by numbS2D.UAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has type II neuroblast | increased number | larval stage phenotype, suppressible by aPKCk06403/aPKC[+]
l(2)gl334 has larval brain & neuroblast | supernumerary phenotype, suppressible by aPKCk06403
l(2)gl334 has wing disc phenotype, suppressible by aPKCk06403/aPKC[+]
l(2)gl334 has neuroblast & larval brain & third instar larva phenotype, suppressible by aPKCk06403/aPKC[+]
l(2)gl334 has ventral thoracic disc & epithelial cell phenotype, suppressible by aPKCk06403/aPKC[+]
l(2)gl334 has leg disc phenotype, suppressible by aPKCk06403/aPKC[+]
l(2)gl334 has dorsal mesothoracic disc & epithelial cell phenotype, suppressible by aPKCk06403/aPKC[+]
l(2)gl334/l(2)gl4 has embryonic/larval brain | third instar larval stage phenotype, suppressible | partially by aPKCk06403/aPKC[+]
l(2)gl334 has phenotype, suppressible by Dpse\l(2)gl+t12.2
l(2)gl334/l(2)gl3644 has type I neuroblast | increased number | larval stage phenotype, non-suppressible by numbΔPTB.UAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl3644 has type I neuroblast | increased number | larval stage phenotype, non-suppressible by numbΔAB.UAS.Tag:HA/Scer\GAL4ase.neuro
l(2)gl334/l(2)gl[+] is a suppressor | partially of eye phenotype of Fmr1sev.PW
l(2)gl334/l(2)gl[+] is a suppressor | partially of ommatidium phenotype of Fmr1sev.PW
l(2)gl334/l(2)gl[+] is a suppressor | partially of retina phenotype of Fmr1sev.PW
aPKCk06403/+ suppresses the increased number of type II neuroblasts and intermediate neural progenitor cells seen in l(2)gl334/l(2)gl3644 larval brains.
The formation of supernumerary type I neuroblasts which is seen in l(2)gl334/l(2)gl3644 larval brains is suppressed by expression of either numbScer\UAS.T:Ivir\HA1, numbΔN.Scer\UAS.hs.T:Hsap\MYC, numbS2A.Scer\UAS.T:Ivir\HA1, numbS2D.Scer\UAS.T:Ivir\HA1 or numbΔC.Scer\UAS.T:Ivir\HA1 under the control of Scer\GAL4ase.neuro, but is not suppressed by expression of either numbΔPTB.Scer\UAS.T:Ivir\HA1 or numbΔAB.Scer\UAS.T:Ivir\HA1 under the control of Scer\GAL4ase.neuro.
The formation of supernumerary type I neuroblasts which is seen in l(2)gl334/l(2)gl3644 larval brains is suppressed by co-expression of numbΔC.Scer\UAS.T:Ivir\HA1, but is not suppressed by co-expression of either numbΔAB.Scer\UAS.T:Ivir\HA1 or numbΔPTB.Scer\UAS.T:Ivir\HA1.
l(2)gl334 aPKCk06403/l(2)gl334 + larvae exhibit essentially normal leg and wing imaginal disc morphology including disc size, columnar cell shape and an approximately normal apical membrane domain, at the early third instar stage. The increase in L3 larval brain volume seen in l(2)gl334/l(2)gl4 animals is partially suppressed by aPKCk06403/+. The increase in neuroblast number seen in homozygous l(2)gl334 third larval instar brains is partially suppressed by aPKCk06403/+.
Mutant phenotype completely rescued by Dpse\l(2)gl+t12.2.
l(2)gl334/l(2)gl4 is rescued by Scer\GAL4hh.PU/l(2)glUASp.GFP
l(2)gl334 is rescued by l(2)gl+t13.1
l(2)gl334/l(2)gl4 is partially rescued by Scer\GAL4hh.PU/l(2)glUAS.Tag:Myr(Unk)
l(2)gl334/l(2)gl4 is partially rescued by l(2)glASA.UAS.GFP/Scer\GAL4hh.PU
Expression of Scer\GAL4hh.PU>l(2)glScer\UAS.P\T.T:Avic\GFP rescues the cell polarity defects in l(2)gl4/l(2)gl334 mutants.
Expression of Scer\GAL4hh.PU>l(2)glASA.Scer\UAS.T:Avic\GFP rescues the cell polarity defects in l(2)gl4/l(2)gl334 mutants and l(2)gl4 mutant somatic clones, but reveals spindle orientation defects.
Expression of Scer\GAL4hh.PU>l(2)glScer\UAS.T:Uuuu\Myr-Unk rescues the cell polarity defects in l(2)gl4/l(2)gl334 mutants and l(2)gl4 mutant somatic clones, but reveals spindle orientation defects.
Mutant phenotype can be completely rescued by l(2)gl+t13.1.
Isolated from: Uman', Ukraine population.