MlfΔC1 homozygous third instar larvae present a significant increase in both the number and size of circulating crystal cells (identified as Lozenge-positive cells, and which are still capable of melanization upon heat treatment), but other circulating cells have unaffected size, as compared to controls; MlfΔC1 heterozygotes also exhibit a (dominant) increase in the size, but not number, of crystal cells, as compared to controls.
64.0% of animals derived from a cross of homozygous females to homozygous males die as embryos, whereas 46.5% of animals derived from a cross of homozygous females to wild-type males die, indicating that that maternal effect lethality is partially rescued by a paternal Mlf+ copy. Embryos derived from a cross of heterozygous females to wild-type males have normal viability.
90.0% of animals derived from a cross of homozygous MlfΔ5-3 females to homozygous MlfΔC1 males die as embryos.
Homozygous adults lack interocellar bristles and the head macrochaetae are frequently bent or shortened. Ectopic venation is seen in the wing near longitudinal vein 2.
MlfΔC1 has increased cell size | third instar larval stage | dominant phenotype, enhanceable by DnaJ-1[+]/DnaJ-1A
MlfΔC1 has increased cell size | dominant | third instar larval stage phenotype, suppressible by lzUAS.cBa/Scer\GAL4lz-gal4
MlfΔC1 has increased cell number | dominant | third instar larval stage phenotype, suppressible by lzUAS.cBa/Scer\GAL4lz-gal4
MlfΔC1 has increased cell number | third instar larval stage phenotype, suppressible by N[+]/N55e11
MlfΔC1 has increased cell size | third instar larval stage phenotype, suppressible by N[+]/N55e11
MlfΔC1 has visible phenotype, suppressible by Scer\GAL4GMR.PF/Hsap\MLF1UAS.cMa
Mlf[+]/MlfΔC1 is an enhancer of increased cell size | third instar larval stage | dominant phenotype of DnaJ-1A
Mlf[+]/MlfΔC1 is a non-suppressor of short lived | RU486 conditional phenotype of Hsap\ATXN3tr.Q78.UAS.Tag:HA, Scer\GAL4elav.Switch.PO
DnaJ-1A, Mlf[+]/MlfΔC1 has increased cell number | third instar larval stage phenotype
MlfΔC1 has embryonic/larval crystal cell | third instar larval stage phenotype, enhanceable by DnaJ-1[+]/DnaJ-1A
MlfΔC1 has embryonic/larval crystal cell | third instar larval stage phenotype, suppressible by lzUAS.cBa/Scer\GAL4lz-gal4
MlfΔC1 has embryonic/larval crystal cell | third instar larval stage phenotype, suppressible by N[+]/N55e11
MlfΔC1 has macrochaeta phenotype, suppressible by Scer\GAL4GMR.PF/Hsap\MLF1UAS.cMa
MlfΔC1 has wing phenotype, suppressible by Scer\GAL4GMR.PF/Hsap\MLF1UAS.cMa
Mlf[+]/MlfΔC1 is an enhancer of embryonic/larval crystal cell | third instar larval stage phenotype of DnaJ-1A
DnaJ-1A, Mlf[+]/MlfΔC1 has embryonic/larval crystal cell | third instar larval stage phenotype
DnaJ-1A, MlfΔC1 double heterozygous third instar larvae present a significant increase in the number of circulating crystal cells (identified as Lozenge-positive cells), as compared to heterozygous or wild-type controls. DnaJ-1A, MlfΔC1 double heterozygous third instar larvae present a significant increase in the size of circulating crystal cells (identified as Lozenge-positive cells), as compared to each heterozygous or wild-type controls.
The increased number and size of circulating crystal cells observed in MlfΔC1 homozygous third instar larvae is suppressed by the expression of lzScer\UAS.cBa under the control of Scer\GAL4lz-gal4 or by N55e11 heterozygosity.
Expression of Hsap\MLF1Scer\UAS.cMa under the control of Scer\GAL4GMR.PF almost completely rescues the macrochaete and wing phenotypes seen in MlfΔC1 homozygotes. The reduction in life span that is seen in flies expressing Hsap\ATXN3tr.Q78.Scer\UAS.T:Ivir\HA1 under the control of Scer\GAL4elav.Switch.PO in the presence of RU486 is not modified by the addition of MlfΔC1/+.
MlfΔ5-3/MlfΔC1 is rescued by MlfUAS.cFa
Expression of MlfScer\UAS.cFa under the control of Scer\GAL4lz-gal4 rescues the crystal cell phenotype of MlfΔ5-3/MlfΔC1 mutants.