Fppsk06103 heterozygous mutants do not display a degenerative nervous system phenotype, with only the occasional small vacuole forming in these mutants.
The average number of crystal cells per embryo is reduced (to 10.5) in homozygous stage 13-14 embryos compared to wild type (36 +/- 2.2 cells on average).
In embryos homozygous Fppsk06103, a small number of germ cells (4 on average) fail to migrate correctly toward the mesoderm and instead remain associated with the dorsal side of the posterior midgut. This phenotype is stronger in embryos both maternally and zygotically homozygous for Fppsk06103 : 13 germ cells, on average, fail to migrate into the mesoderm.
Fpps[+]/Fppsk06103 is a suppressor of abnormal neuroanatomy phenotype of SNF4Aγloe
Fppsk06103 has primordial germ cell phenotype, enhanceable by Hmgcr01152
Fppsk06103 has primordial germ cell phenotype, enhanceable by qmL14.4
Fpps[+]/Fppsk06103 is an enhancer of wing margin phenotype of Bx2
Fppsk06103 is an enhancer of primordial germ cell phenotype of Hmgcr01152
Fppsk06103 is an enhancer of primordial germ cell phenotype of qmL14.4
Fpps[+]/Fppsk06103 is a non-enhancer of scutellar bristle | increased number phenotype of Chie5.5
Fpps[+]/Fppsk06103 is a non-enhancer of scutellar bristle | increased number phenotype of SsdpL7
Fpps[+]/Fppsk06103 is a suppressor of primordial germ cell | maternal effect | embryonic stage 5 phenotype of Neurl4Δ1
Fpps[+]/Fppsk06103 is a non-suppressor of scutellar bristle | increased number phenotype of Chie5.5
Fpps[+]/Fppsk06103 is a non-suppressor of scutellar bristle | increased number phenotype of SsdpL7
A Fppsk06103 heterozygous background significantly suppresses the degenerative nervous sytem phenotype found in 5 day old SNF4Aγloe mutants. These flies exhibit a reduction in the area of vacuoles in the optic system, from approximately 163 υm[2] to 25υm[2] in a Fppsk06103/+ background. There is a similar reduction in the number of vacuoles present, confirming an involvement of the isoprenoid pathway in the degenerative phenotype of SNF4Aγloe flies.
Germ cell migration is severely defective in Fppsk06103; qmL14.4 double homozygous embryos. About 40% of Fppsk06103; Hmgcr01152 double homozygous embryoshave severe patterning defects. However, in the remaining 60% the mesoderm appears correctly patterned but germ cell migration is severely defective (on average 14 germ cells remain on the gut), an enhancement over the germ cell migration phenotype seen in either single mutant.
I. Kiss.
Reversion analysis proved that the P{lacW} is responsible for the lethal phenotype.